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setup.py	setup.py
tox.ini	tox.ini

client-sdk-python

说明

client-sdk-python 是一个服务于Platon底层链的python sdk。通过web3对象与底层链进行交互。底层实现上，它通过 RPC 调用与本地节点通信。client-sdk-python可以与任何暴露了RPC接口的PlatON节点连接。

主要功能用于获取区块数据、发送交易、使用智能合约进行交互、以及其他的一些应用。

client-sdk-python下载链接

快速入门

一、安装

1 Python环境要求

支持Python 3.6+版本

2 可使用pip直接安装：

~~~

pip install client-sdk-python ~~~

或下载代码，在python编辑器中使用。git bash 拉取源代码，如下操作

~~~

git clone https://github.com/PlatONnetwork/client-sdk-python.git ~~~

二、使用

1 Web3模式

Platon节点之间通过P2PMessage通信。而节点和python sdk之间使用内置的Web3模式，发送JSON-RPC 请求，经过HTTP 、websocket、IPC等方式连接节点。

2 节点连接

以HTTP 连接为例，连接一个Platon节点
```
w3 = Web3(HTTPProvider("http://localhost:6789"))
platon = PlatON(w3)
print(w3.isConnected())
```
其中 localhost:6789为Platon的一个节点Url，请输入可访问的Platon节点Url。

platon为platON类的一个实例。

以Websocket连接为例

代码如下：

w3 = Web3(WebsocketProvider("http://localhost:6789"))
platon = PlatON(w3)
print(w3.isConnected())

以IPC连接为例

代码如下：

w3 = Web3(IPCProvider("http://localhost:6789"))
platon = PlatON(w3)
print(w3.isConnected())

3 基本api

基础类型编和解码

Web3.toBytes()

将输入的参数转换为Bytes

调用：

>>> Web3.toBytes(0)
b'\x00'
>>> Web3.toBytes(0x000F)
b'\x0f'

Web3.toHex()

将输入的参数转换为16进制

调用：

>>> Web3.toHex(b'\x00\x0F')
'0x000f'
>>> Web3.toHex(False)
'0x0'

Web3.toInt()

将输入的参数转换为整型

调用：

>>> Web3.toInt(0x000F)
15
>>> Web3.toInt(b'\x00\x0F')
15

Web3.toJSON()

将输入的参数转换为json格式

调用

>>> Web3.toJSON(3)
'3'
>>> Web3.toJSON({'one': 1})
'{"one": 1}'

Web3.toText()

将输入的参数转换为字符串格式

调用

>>> Web3.toText(b'cowm\xc3\xb6')
'cowmö'
>>> Web3.toText(hexstr='0x636f776dc3b6')
'cowmö'

地址检测

Web3.isAddress()

检测输入的参数是否为被认可的地址形式

调用
```
>>> Web3.isAddress('0xd3CdA913deB6f67967B99D67aCDFa1712C293601')
True
```

Web3.isChecksumAddress()

检查指定地址的校验和，对于非检验和地址将返回false

>>> Web3.isChecksumAddress('0xd3CdA913deB6f67967B99D67aCDFa1712C293601')
True
>>> Web3.isChecksumAddress('0xd3cda913deb6f67967b99d67acdfa1712c293601')
False

加密哈希

Web3.sha3()

将输入参数编译为 Keccak-256

调用：

>>> Web3.sha3(0x678901)
HexBytes('0x77cf3b4c68ccdb65991397e7b93111e0f7d863df3b26ebb053d0857e26486e6a')
>>> Web3.sha3(text='txt')
HexBytes('0xd7278090a36507640ea6b7a0034b69b0d240766fa3f98e3722be93c613b29d2e')

Web3.soliditySha3()

将输入的abi_type和value编译为 Keccak-256

参数：

value：真实值
abi_type：和value相等的solidity 格式的字符串列表

调用

>>> Web3.solidityKeccak(['uint8[]'], [[97, 98, 99]])
HexBytes("0x233002c671295529bcc50b76a2ef2b0de2dac2d93945fca745255de1a9e4017e")

>>> Web3.solidityKeccak(['address'], ["0x49EdDD3769c0712032808D86597B84ac5c2F5614"])
HexBytes("0x2ff37b5607484cd4eecf6d13292e22bd6e5401eaffcc07e279583bc742c68882")

4 链上查询api

与Platon 链上节点连接成功以后，可通过platon里的api查询链上节点的相关信息

(1) platon.blockNumber

返回当前块编号

返回值：

一个AttributeDict对象，其解析值为最近一个块的编号，Number类型。

(2) platon.syncing

用来检查节点当前是否已经与网络同步

返回值：

一个AttributeDict对象，其解析值为Object或Bool。如果节点尚未与网络同步，则返回false，否则返回一个同步对象，具有以下属性：
- startingBlock - Number: 同步起始块编号
- currentBlock - Number: 当前已同步块编号
- highestBlock - Number: 预估的目标同步块编号
- knownStates - Number: 预估的要下载的状态
- pulledStates - Number: 已经下载的状态
(3) platon.gasPrice

用来获取当前gas价格，该价格由最近的若干块的gas价格中值决定。

返回值：

一个AttributeDict对象，其解析值为表示当前gas价格的字符串，单位为VON。

(4) platon.accounts

方法返回当前节点控制的账户列表。

返回值

一个AttributeDict对象，其解析值为账户地址数组。
(5) platon.evidences

返回账户地址指定位置的存储内容。

返回值

一个AttributeDict对象，其解析值为账户地址存储内容。
(6) platon.consensusStatus

返回当前节点所在区块树的共识状态信息。

返回值

一个AttributeDict对象，其值为区块树中的所有区块公示状态信息。
(7) platon.getBalance(address)

用来获取指定块中特定账户地址的余额

参数：
- address：String - 要检查余额的账户地址，bech32 address格式，lax开头的为测试网，lat开头的为主网
返回值：

一个AttributeDict对象，其解析值为指定账户地址的余额字符串，以VON为单位

部分代码示例：

from client_sdk_python import Web3, HTTPProvider
from client_sdk_python.eth import PlatON
from hexbytes import HexBytes

# get blockNumber syncing gasPrice accounts evidences consensusStatus
w3 = Web3(HTTPProvider("http://localhost:6789"))
platon = PlatON(w3)
block_number = platon.blockNumber
print(block_number)
print(platon.syncing)
print(platon.gasPrice)
print(platon.accounts)
print(platon.evidences)
print(platon.consensusStatus)

# get Balance
address = 'lax1yjjzvjph3tw4h2quw6mse25y492xy7fzwdtqja'
balance = platon.getBalance(address)
print(balance) 

#输出
385274
False
100000000
['lax1yjjzvjph3tw4h2quw6mse25y492xy7fzwdtqja', 'lax1qqqjkfwu854vf3ze2dpy5gctmxy3gdgzsngj66']
{}
AttributeDict({'blockTree': AttributeDict({'root': AttributeDict({'viewNumber': 22, 'blockHash': '0x92e3229453574aa2a7120e3b0dd44d3b1b304465418a129dcc72124414b9674d', 'blockNumber': 392226, 'receiveTime': '2020-09-15T18:05:58.440430021+08:00', 'qc': AttributeDict({'epoch': 1569, 'viewNumber': 22, 'blockHash': '0x92e3229453574aa2a7120e3b0dd44d3b1b304465418a129dcc72124414b9674d', 'blockNumber': 392226, 'blockIndex': 5, 'signature': '0x83a517492b9052de25d3b88413f070becff1e995167094b33805bfaf640b8d1499304844f08478f0525c44e7eb9ec70000000000000000000000000000000000', 'validatorSet': '_xxx'}), 'parentHash': '0x0000000000000000000000000000000000000000000000000000000000000000', 'childrenHash': ['0x69ea999a1bdb006bb9b113f20047a3d3ae79433abc1749e4fa1ec4082dcb0e90']}), 'blocks': AttributeDict({'392226': AttributeDict({'0x92e3229453574aa2a7120e3b0dd44d3b1b304465418a129dcc72124414b9674d': AttributeDict({'viewNumber': 22, 'blockHash': '0x92e3229453574aa2a7120e3b0dd44d3b1b304465418a129dcc72124414b9674d', 'blockNumber': 392226, 'receiveTime': '2020-09-15T18:05:58.440430021+08:00', 'qc': AttributeDict({'epoch': 1569, 'viewNumber': 22, 'blockHash': '0x92e3229453574aa2a7120e3b0dd44d3b1b304465418a129dcc72124414b9674d', 'blockNumber': 392226, 'blockIndex': 5, 'signature': '0x83a517492b9052de25d3b88413f070becff1e995167094b33805bfaf640b8d1499304844f08478f0525c44e7eb9ec70000000000000000000000000000000000', 'validatorSet': '_xxx'}), 'parentHash': '0x0000000000000000000000000000000000000000000000000000000000000000', 'childrenHash': ['0x69ea999a1bdb006bb9b113f20047a3d3ae79433abc1749e4fa1ec4082dcb0e90']})}), '392227': AttributeDict({'0x69ea999a1bdb006bb9b113f20047a3d3ae79433abc1749e4fa1ec4082dcb0e90': AttributeDict({'viewNumber': 22, 'blockHash': '0x69ea999a1bdb006bb9b113f20047a3d3ae79433abc1749e4fa1ec4082dcb0e90', 'blockNumber': 392227, 'receiveTime': '2020-09-15T18:05:59.542161134+08:00', 'qc': AttributeDict({'epoch': 1569, 'viewNumber': 22, 'blockHash': '0x69ea999a1bdb006bb9b113f20047a3d3ae79433abc1749e4fa1ec4082dcb0e90', 'blockNumber': 392227, 'blockIndex': 6, 'signature': '0x50bcc710ac0182f311065dfcb4b1c8b378788bcfe53217d6f5b29e3178508bec5557eaf7e9d360930c69c43a091e5f1800000000000000000000000000000000', 'validatorSet': '_xxx'}), 'parentHash': '0x92e3229453574aa2a7120e3b0dd44d3b1b304465418a129dcc72124414b9674d', 'childrenHash': ['0x314adeb1ded15f49579ae2bc44d0b060d1d57905e9ddcd8da8ad1628bbee5294']})}), '392228': AttributeDict({'0x314adeb1ded15f49579ae2bc44d0b060d1d57905e9ddcd8da8ad1628bbee5294': AttributeDict({'viewNumber': 22, 'blockHash': '0x314adeb1ded15f49579ae2bc44d0b060d1d57905e9ddcd8da8ad1628bbee5294', 'blockNumber': 392228, 'receiveTime': '2020-09-15T18:06:00.642317619+08:00', 'qc': AttributeDict({'epoch': 1569, 'viewNumber': 22, 'blockHash': '0x314adeb1ded15f49579ae2bc44d0b060d1d57905e9ddcd8da8ad1628bbee5294', 'blockNumber': 392228, 'blockIndex': 7, 'signature': '0x505b4a9e0ed0cb3e26b2b327013bcde06350c7b2926126bbaa02417e386b0ecddc31201ec66e8a29e3c86714d669899000000000000000000000000000000000', 'validatorSet': '_xxx'}), 'parentHash': '0x69ea999a1bdb006bb9b113f20047a3d3ae79433abc1749e4fa1ec4082dcb0e90', 'childrenHash': []})})})}), 'state': AttributeDict({'view': AttributeDict({'epoch': 1569, 'viewNumber': 22, 'executing': AttributeDict({'blockIndex': 7, 'finish': True}), 'viewchange': AttributeDict({'viewchanges': AttributeDict({})}), 'lastViewchange': None, 'hadSendPrepareVote': AttributeDict({'votes': [AttributeDict({'epoch': 1569, 'viewNumber': 22, 'blockHash': '0x201c9308eb4e0af12b98d64694837db7a59780ab430aa71ccfdb90741d41f857', 'blockNumber': 392221, 'blockIndex': 0, 'validatorIndex': 1, 'parentQC': AttributeDict({'epoch': 1569, 'viewNumber': 21, 'blockHash': '0x3cc758aa857621036e55cede20943ffd1a3b7e1ebc38dffcc690d4804f706dd0', 'blockNumber': 392220, 'blockIndex': 9, 'signature': '0xb3a89b39e9345d37ea7db2985132a3adb55abb906cd975f137eb608f55be7ea7657b0ecc0ccfa99d3caebb25a088018d00000000000000000000000000000000', 'validatorSet': '_xxx'}), 'signature': '0x599205f55ce4a191405fb5c7ad4a3961bb95a93206525b8218777023f47114a611146a40921f537478339375844cb10b00000000000000000000000000000000'}), AttributeDict({'epoch': 1569, 'viewNumber': 22, 'blockHash': '0xf6fff5626fc1fd235bb224a4d1b3f68ccd1f9f56ad4d6dff428d33b4b10cff7f', 'blockNumber': 392222, 'blockIndex': 1, 'validatorIndex': 1, 'parentQC': AttributeDict({'epoch': 1569, 'viewNumber': 22, 'blockHash': '0x201c9308eb4e0af12b98d64694837db7a59780ab430aa71ccfdb90741d41f857', 'blockNumber': 392221, 'blockIndex': 0, 'signature': '0xfbb64c0d0bd6f531f4d9b6303e9b3ede59deb1877c7a31bd95c0403dcfc32dec7b8060574616d500735a2d734d21e90300000000000000000000000000000000', 'validatorSet': '_xxx'}), 'signature': '0x422a227b80667cd3f38ff794018ad3f634c0aafdbcc08a9dddff2f46b3d66f829c217dca47add729817a72dae169040000000000000000000000000000000000'}), AttributeDict({'epoch': 1569, 'viewNumber': 22, 'blockHash': '0x812e7f19e6a281928ac77767300560b8ed633d0c45f53a05b0163ea807898913', 'blockNumber': 392223, 'blockIndex': 2, 'validatorIndex': 1, 'parentQC': AttributeDict({'epoch': 1569, 'viewNumber': 22, 'blockHash': '0xf6fff5626fc1fd235bb224a4d1b3f68ccd1f9f56ad4d6dff428d33b4b10cff7f', 'blockNumber': 392222, 'blockIndex': 1, 'signature': '0x5dc7f6461e0078b7e474badc1f7b3e0716b52f5f2f2ddcd144bd738e74246d1e5ee3780e0d4f7771b3afd5b10936019500000000000000000000000000000000', 'validatorSet': '_xxx'}), 'signature': '0xaedbc8885b066d99905c7813302ce699b895761a1b4ab83efda28dc3b5901b585ada31df67932b68e52edd663f651e9200000000000000000000000000000000'}), AttributeDict({'epoch': 1569, 'viewNumber': 22, 'blockHash': '0x45f49937c4ea54b08d36fc1223fd819da11f709b3827217225c235a0ef9f89a8', 'blockNumber': 392224, 'blockIndex': 3, 'validatorIndex': 1, 'parentQC': AttributeDict({'epoch': 1569, 'viewNumber': 22, 'blockHash': '0x812e7f19e6a281928ac77767300560b8ed633d0c45f53a05b0163ea807898913', 'blockNumber': 392223, 'blockIndex': 2, 'signature': '0xd3a08cfd6c3a166e1d31dd1e58bb9eb1960bebcfc38ebad0eb0880ab30b2e46112c514980050159ad235615381ac820d00000000000000000000000000000000', 'validatorSet': '_xxx'}), 'signature': '0xb52fb84d8ea31918023e695fe3619ba14a1335f6455e6ab42559d7e38c9bcef8105d7c33d433f6fb7eb8d524b1afb58b00000000000000000000000000000000'}), AttributeDict({'epoch': 1569, 'viewNumber': 22, 'blockHash': '0x0341dcfab2ee1ec61b5cd380bd8445ab0a17819cc4f633ee0b3a4ca211c717f9', 'blockNumber': 392225, 'blockIndex': 4, 'validatorIndex': 1, 'parentQC': AttributeDict({'epoch': 1569, 'viewNumber': 22, 'blockHash': '0x45f49937c4ea54b08d36fc1223fd819da11f709b3827217225c235a0ef9f89a8', 'blockNumber': 392224, 'blockIndex': 3, 'signature': '0xd837920786bce9ea276ff3a6505dc8f48db18e9f7f4272b66dff966c904bbb83adb70f425af9c99a30957a8eae3cf30b00000000000000000000000000000000', 'validatorSet': '_xxx'}), 'signature': '0x63dd1a1f8331320b2be8bd04abb2bae53f67fe9c14f70863723a86ccf329d4d95c9446aae360081935df5a7f2ac8681300000000000000000000000000000000'}), AttributeDict({'epoch': 1569, 'viewNumber': 22, 'blockHash': '0x92e3229453574aa2a7120e3b0dd44d3b1b304465418a129dcc72124414b9674d', 'blockNumber': 392226, 'blockIndex': 5, 'validatorIndex': 1, 'parentQC': AttributeDict({'epoch': 1569, 'viewNumber': 22, 'blockHash': '0x0341dcfab2ee1ec61b5cd380bd8445ab0a17819cc4f633ee0b3a4ca211c717f9', 'blockNumber': 392225, 'blockIndex': 4, 'signature': '0x442a6e1c25857ac5ba84b16ab38918fba3c75681dcf623eacf23d5dbafd293cd0d3d617472e60dccd343c9444c4d428500000000000000000000000000000000', 'validatorSet': 'x_xx'}), 'signature': '0xf885e975ff4828d1f10be4dd61b7cd4e362d0f4a0b79af9d7a2ac34209341ee79d76281ec7b205f834e5c2c00c0c398800000000000000000000000000000000'}), AttributeDict({'epoch': 1569, 'viewNumber': 22, 'blockHash': '0x69ea999a1bdb006bb9b113f20047a3d3ae79433abc1749e4fa1ec4082dcb0e90', 'blockNumber': 392227, 'blockIndex': 6, 'validatorIndex': 1, 'parentQC': AttributeDict({'epoch': 1569, 'viewNumber': 22, 'blockHash': '0x92e3229453574aa2a7120e3b0dd44d3b1b304465418a129dcc72124414b9674d', 'blockNumber': 392226, 'blockIndex': 5, 'signature': '0x83a517492b9052de25d3b88413f070becff1e995167094b33805bfaf640b8d1499304844f08478f0525c44e7eb9ec70000000000000000000000000000000000', 'validatorSet': '_xxx'}), 'signature': '0xbe0d77590be62ec7cb0f5fd2dd5071aa6d97e8b909fd05cc80f10e6e58f0984adeeb7078f2c9a99e4a08e00102d4209900000000000000000000000000000000'}), AttributeDict({'epoch': 1569, 'viewNumber': 22, 'blockHash': '0x314adeb1ded15f49579ae2bc44d0b060d1d57905e9ddcd8da8ad1628bbee5294', 'blockNumber': 392228, 'blockIndex': 7, 'validatorIndex': 1, 'parentQC': AttributeDict({'epoch': 1569, 'viewNumber': 22, 'blockHash': '0x69ea999a1bdb006bb9b113f20047a3d3ae79433abc1749e4fa1ec4082dcb0e90', 'blockNumber': 392227, 'blockIndex': 6, 'signature': '0x50bcc710ac0182f311065dfcb4b1c8b378788bcfe53217d6f5b29e3178508bec5557eaf7e9d360930c69c43a091e5f1800000000000000000000000000000000', 'validatorSet': '_xxx'}), 'signature': '0x7305573c2655de2537e744ef1411ea55e450f8879a19274ede2455f40975f59c1b9df25d3e311464fb5cbd2398fcd48600000000000000000000000000000000'})]}), 'pendingPrepareVote': AttributeDict({'votes': []}), 'viewBlocks': AttributeDict({'0': AttributeDict({'hash': '0x201c9308eb4e0af12b98d64694837db7a59780ab430aa71ccfdb90741d41f857', 'number': 392221, 'blockIndex': 0}), '1': AttributeDict({'hash': '0xf6fff5626fc1fd235bb224a4d1b3f68ccd1f9f56ad4d6dff428d33b4b10cff7f', 'number': 392222, 'blockIndex': 1}), '2': AttributeDict({'hash': '0x812e7f19e6a281928ac77767300560b8ed633d0c45f53a05b0163ea807898913', 'number': 392223, 'blockIndex': 2}), '3': AttributeDict({'hash': '0x45f49937c4ea54b08d36fc1223fd819da11f709b3827217225c235a0ef9f89a8', 'number': 392224, 'blockIndex': 3}), '4': AttributeDict({'hash': '0x0341dcfab2ee1ec61b5cd380bd8445ab0a17819cc4f633ee0b3a4ca211c717f9', 'number': 392225, 'blockIndex': 4}), '5': AttributeDict({'hash': '0x92e3229453574aa2a7120e3b0dd44d3b1b304465418a129dcc72124414b9674d', 'number': 392226, 'blockIndex': 5}), '6': AttributeDict({'hash': '0x69ea999a1bdb006bb9b113f20047a3d3ae79433abc1749e4fa1ec4082dcb0e90', 'number': 392227, 'blockIndex': 6}), '7': AttributeDict({'hash': '0x314adeb1ded15f49579ae2bc44d0b060d1d57905e9ddcd8da8ad1628bbee5294', 'number': 392228, 'blockIndex': 7})}), 'viewQcs': AttributeDict({'maxIndex': 7, 'qcs': AttributeDict({'0': AttributeDict({'epoch': 1569, 'viewNumber': 22, 'blockHash': '0x201c9308eb4e0af12b98d64694837db7a59780ab430aa71ccfdb90741d41f857', 'blockNumber': 392221, 'blockIndex': 0, 'signature': '0xfbb64c0d0bd6f531f4d9b6303e9b3ede59deb1877c7a31bd95c0403dcfc32dec7b8060574616d500735a2d734d21e90300000000000000000000000000000000', 'validatorSet': '_xxx'}), '1': AttributeDict({'epoch': 1569, 'viewNumber': 22, 'blockHash': '0xf6fff5626fc1fd235bb224a4d1b3f68ccd1f9f56ad4d6dff428d33b4b10cff7f', 'blockNumber': 392222, 'blockIndex': 1, 'signature': '0x5dc7f6461e0078b7e474badc1f7b3e0716b52f5f2f2ddcd144bd738e74246d1e5ee3780e0d4f7771b3afd5b10936019500000000000000000000000000000000', 'validatorSet': '_xxx'}), '2': AttributeDict({'epoch': 1569, 'viewNumber': 22, 'blockHash': '0x812e7f19e6a281928ac77767300560b8ed633d0c45f53a05b0163ea807898913', 'blockNumber': 392223, 'blockIndex': 2, 'signature': '0xd3a08cfd6c3a166e1d31dd1e58bb9eb1960bebcfc38ebad0eb0880ab30b2e46112c514980050159ad235615381ac820d00000000000000000000000000000000', 'validatorSet': '_xxx'}), '3': AttributeDict({'epoch': 1569, 'viewNumber': 22, 'blockHash': '0x45f49937c4ea54b08d36fc1223fd819da11f709b3827217225c235a0ef9f89a8', 'blockNumber': 392224, 'blockIndex': 3, 'signature': '0xd837920786bce9ea276ff3a6505dc8f48db18e9f7f4272b66dff966c904bbb83adb70f425af9c99a30957a8eae3cf30b00000000000000000000000000000000', 'validatorSet': '_xxx'}), '4': AttributeDict({'epoch': 1569, 'viewNumber': 22, 'blockHash': '0x0341dcfab2ee1ec61b5cd380bd8445ab0a17819cc4f633ee0b3a4ca211c717f9', 'blockNumber': 392225, 'blockIndex': 4, 'signature': '0x442a6e1c25857ac5ba84b16ab38918fba3c75681dcf623eacf23d5dbafd293cd0d3d617472e60dccd343c9444c4d428500000000000000000000000000000000', 'validatorSet': 'x_xx'}), '5': AttributeDict({'epoch': 1569, 'viewNumber': 22, 'blockHash': '0x92e3229453574aa2a7120e3b0dd44d3b1b304465418a129dcc72124414b9674d', 'blockNumber': 392226, 'blockIndex': 5, 'signature': '0x83a517492b9052de25d3b88413f070becff1e995167094b33805bfaf640b8d1499304844f08478f0525c44e7eb9ec70000000000000000000000000000000000', 'validatorSet': '_xxx'}), '6': AttributeDict({'epoch': 1569, 'viewNumber': 22, 'blockHash': '0x69ea999a1bdb006bb9b113f20047a3d3ae79433abc1749e4fa1ec4082dcb0e90', 'blockNumber': 392227, 'blockIndex': 6, 'signature': '0x50bcc710ac0182f311065dfcb4b1c8b378788bcfe53217d6f5b29e3178508bec5557eaf7e9d360930c69c43a091e5f1800000000000000000000000000000000', 'validatorSet': '_xxx'}), '7': AttributeDict({'epoch': 1569, 'viewNumber': 22, 'blockHash': '0x314adeb1ded15f49579ae2bc44d0b060d1d57905e9ddcd8da8ad1628bbee5294', 'blockNumber': 392228, 'blockIndex': 7, 'signature': '0x505b4a9e0ed0cb3e26b2b327013bcde06350c7b2926126bbaa02417e386b0ecddc31201ec66e8a29e3c86714d669899000000000000000000000000000000000', 'validatorSet': '_xxx'})})}), 'viewVotes': AttributeDict({'votes': AttributeDict({'0': AttributeDict({'votes': AttributeDict({'1': AttributeDict({'epoch': 1569, 'viewNumber': 22, 'blockHash': '0x201c9308eb4e0af12b98d64694837db7a59780ab430aa71ccfdb90741d41f857', 'blockNumber': 392221, 'blockIndex': 0, 'validatorIndex': 1, 'parentQC': AttributeDict({'epoch': 1569, 'viewNumber': 21, 'blockHash': '0x3cc758aa857621036e55cede20943ffd1a3b7e1ebc38dffcc690d4804f706dd0', 'blockNumber': 392220, 'blockIndex': 9, 'signature': '0xb3a89b39e9345d37ea7db2985132a3adb55abb906cd975f137eb608f55be7ea7657b0ecc0ccfa99d3caebb25a088018d00000000000000000000000000000000', 'validatorSet': '_xxx'}), 'signature': '0x599205f55ce4a191405fb5c7ad4a3961bb95a93206525b8218777023f47114a611146a40921f537478339375844cb10b00000000000000000000000000000000'})})}), '1': AttributeDict({'votes': AttributeDict({'1': AttributeDict({'epoch': 1569, 'viewNumber': 22, 'blockHash': '0xf6fff5626fc1fd235bb224a4d1b3f68ccd1f9f56ad4d6dff428d33b4b10cff7f', 'blockNumber': 392222, 'blockIndex': 1, 'validatorIndex': 1, 'parentQC': AttributeDict({'epoch': 1569, 'viewNumber': 22, 'blockHash': '0x201c9308eb4e0af12b98d64694837db7a59780ab430aa71ccfdb90741d41f857', 'blockNumber': 392221, 'blockIndex': 0, 'signature': '0xfbb64c0d0bd6f531f4d9b6303e9b3ede59deb1877c7a31bd95c0403dcfc32dec7b8060574616d500735a2d734d21e90300000000000000000000000000000000', 'validatorSet': '_xxx'}), 'signature': '0x422a227b80667cd3f38ff794018ad3f634c0aafdbcc08a9dddff2f46b3d66f829c217dca47add729817a72dae169040000000000000000000000000000000000'})})}), '2': AttributeDict({'votes': AttributeDict({'1': AttributeDict({'epoch': 1569, 'viewNumber': 22, 'blockHash': '0x812e7f19e6a281928ac77767300560b8ed633d0c45f53a05b0163ea807898913', 'blockNumber': 392223, 'blockIndex': 2, 'validatorIndex': 1, 'parentQC': AttributeDict({'epoch': 1569, 'viewNumber': 22, 'blockHash': '0xf6fff5626fc1fd235bb224a4d1b3f68ccd1f9f56ad4d6dff428d33b4b10cff7f', 'blockNumber': 392222, 'blockIndex': 1, 'signature': '0x5dc7f6461e0078b7e474badc1f7b3e0716b52f5f2f2ddcd144bd738e74246d1e5ee3780e0d4f7771b3afd5b10936019500000000000000000000000000000000', 'validatorSet': '_xxx'}), 'signature': '0xaedbc8885b066d99905c7813302ce699b895761a1b4ab83efda28dc3b5901b585ada31df67932b68e52edd663f651e9200000000000000000000000000000000'})})}), '3': AttributeDict({'votes': AttributeDict({'1': AttributeDict({'epoch': 1569, 'viewNumber': 22, 'blockHash': '0x45f49937c4ea54b08d36fc1223fd819da11f709b3827217225c235a0ef9f89a8', 'blockNumber': 392224, 'blockIndex': 3, 'validatorIndex': 1, 'parentQC': AttributeDict({'epoch': 1569, 'viewNumber': 22, 'blockHash': '0x812e7f19e6a281928ac77767300560b8ed633d0c45f53a05b0163ea807898913', 'blockNumber': 392223, 'blockIndex': 2, 'signature': '0xd3a08cfd6c3a166e1d31dd1e58bb9eb1960bebcfc38ebad0eb0880ab30b2e46112c514980050159ad235615381ac820d00000000000000000000000000000000', 'validatorSet': '_xxx'}), 'signature': '0xb52fb84d8ea31918023e695fe3619ba14a1335f6455e6ab42559d7e38c9bcef8105d7c33d433f6fb7eb8d524b1afb58b00000000000000000000000000000000'})})}), '4': AttributeDict({'votes': AttributeDict({'1': AttributeDict({'epoch': 1569, 'viewNumber': 22, 'blockHash': '0x0341dcfab2ee1ec61b5cd380bd8445ab0a17819cc4f633ee0b3a4ca211c717f9', 'blockNumber': 392225, 'blockIndex': 4, 'validatorIndex': 1, 'parentQC': AttributeDict({'epoch': 1569, 'viewNumber': 22, 'blockHash': '0x45f49937c4ea54b08d36fc1223fd819da11f709b3827217225c235a0ef9f89a8', 'blockNumber': 392224, 'blockIndex': 3, 'signature': '0xd837920786bce9ea276ff3a6505dc8f48db18e9f7f4272b66dff966c904bbb83adb70f425af9c99a30957a8eae3cf30b00000000000000000000000000000000', 'validatorSet': '_xxx'}), 'signature': '0x63dd1a1f8331320b2be8bd04abb2bae53f67fe9c14f70863723a86ccf329d4d95c9446aae360081935df5a7f2ac8681300000000000000000000000000000000'})})}), '5': AttributeDict({'votes': AttributeDict({'1': AttributeDict({'epoch': 1569, 'viewNumber': 22, 'blockHash': '0x92e3229453574aa2a7120e3b0dd44d3b1b304465418a129dcc72124414b9674d', 'blockNumber': 392226, 'blockIndex': 5, 'validatorIndex': 1, 'parentQC': AttributeDict({'epoch': 1569, 'viewNumber': 22, 'blockHash': '0x0341dcfab2ee1ec61b5cd380bd8445ab0a17819cc4f633ee0b3a4ca211c717f9', 'blockNumber': 392225, 'blockIndex': 4, 'signature': '0x442a6e1c25857ac5ba84b16ab38918fba3c75681dcf623eacf23d5dbafd293cd0d3d617472e60dccd343c9444c4d428500000000000000000000000000000000', 'validatorSet': 'x_xx'}), 'signature': '0xf885e975ff4828d1f10be4dd61b7cd4e362d0f4a0b79af9d7a2ac34209341ee79d76281ec7b205f834e5c2c00c0c398800000000000000000000000000000000'})})}), '6': AttributeDict({'votes': AttributeDict({'1': AttributeDict({'epoch': 1569, 'viewNumber': 22, 'blockHash': '0x69ea999a1bdb006bb9b113f20047a3d3ae79433abc1749e4fa1ec4082dcb0e90', 'blockNumber': 392227, 'blockIndex': 6, 'validatorIndex': 1, 'parentQC': AttributeDict({'epoch': 1569, 'viewNumber': 22, 'blockHash': '0x92e3229453574aa2a7120e3b0dd44d3b1b304465418a129dcc72124414b9674d', 'blockNumber': 392226, 'blockIndex': 5, 'signature': '0x83a517492b9052de25d3b88413f070becff1e995167094b33805bfaf640b8d1499304844f08478f0525c44e7eb9ec70000000000000000000000000000000000', 'validatorSet': '_xxx'}), 'signature': '0xbe0d77590be62ec7cb0f5fd2dd5071aa6d97e8b909fd05cc80f10e6e58f0984adeeb7078f2c9a99e4a08e00102d4209900000000000000000000000000000000'})})}), '7': AttributeDict({'votes': AttributeDict({'1': AttributeDict({'epoch': 1569, 'viewNumber': 22, 'blockHash': '0x314adeb1ded15f49579ae2bc44d0b060d1d57905e9ddcd8da8ad1628bbee5294', 'blockNumber': 392228, 'blockIndex': 7, 'validatorIndex': 1, 'parentQC': AttributeDict({'epoch': 1569, 'viewNumber': 22, 'blockHash': '0x69ea999a1bdb006bb9b113f20047a3d3ae79433abc1749e4fa1ec4082dcb0e90', 'blockNumber': 392227, 'blockIndex': 6, 'signature': '0x50bcc710ac0182f311065dfcb4b1c8b378788bcfe53217d6f5b29e3178508bec5557eaf7e9d360930c69c43a091e5f1800000000000000000000000000000000', 'validatorSet': '_xxx'}), 'signature': '0x7305573c2655de2537e744ef1411ea55e450f8879a19274ede2455f40975f59c1b9df25d3e311464fb5cbd2398fcd48600000000000000000000000000000000'})})})})})}), 'highestQCBlock': AttributeDict({'hash': '0x314adeb1ded15f49579ae2bc44d0b060d1d57905e9ddcd8da8ad1628bbee5294', 'number': 392228}), 'highestLockBlock': AttributeDict({'hash': '0x69ea999a1bdb006bb9b113f20047a3d3ae79433abc1749e4fa1ec4082dcb0e90', 'number': 392227}), 'highestCommitBlock': AttributeDict({'hash': '0x92e3229453574aa2a7120e3b0dd44d3b1b304465418a129dcc72124414b9674d', 'number': 392226})}), 'validator': True})
220855883097298041197912187592864814478435487109452369765200775161577471

(8) platon.getStorageAt()

返回一个地址的指定位置存储内容

调用：
```
platon.getStorageAt(address, position [, defaultBlock] )
```
参数：
- address：String - 要读取的地址
- position：Number - 存储中的索引编号
- defaultBlock：Number|String - 可选，使用该参数覆盖platon.defaultBlock属性值

返回值：

一个AttributeDict对象，其解析值为存储中指定位置的内容。

(9) platon.getCode

返回指定地址处的代码。

调用：
```
platon.getCode(address [, defaultBlock] )
```
参数：
- address：String - 要读取代码的地址
- defaultBlock：Number|String - 可选，使用该参数覆盖platon.defaultBlock属性值

返回值：

一个AttributeDict对象，其解析值为指定地址处的代码字符串。

(10) platon.getBlock()

返回指定块编号或块哈希对应的块。

调用：
```
platon.getBlock(blockHashOrBlockNumber [, returnTransactionObjects] )
```
参数：
- blockHashOrBlockNumber：String|Number - 块编号或块哈希值，或者使用以下字符串："genesis"、"latest" 或 "pending" 。
- returnTransactionObjects：Boolean - 可选，默认值为false。当设置为true时,返回块中将包括所有交易详情，否则仅返回交易哈希。

返回值：

一个AttributeDict对象，其解析值为满足搜索条件的块对象，具有以下字段：

number - Number: 块编号，处于pending状态的块为null
hash 32 Bytes - String: 块哈希，处于pending状态的块为null
parentHash 32 Bytes - String: 父块哈希
nonce 8 Bytes - String: 生成的proof-of-work的哈希，处于pending状态的块为null
sha3Uncles 32 Bytes - String: 块中叔伯数据的SHA3值
logsBloom 256 Bytes - String: 块中日志的bloom filter，处于pending状态的块为null
transactionsRoot 32 Bytes - String: 块中的交易树根节点
stateRoot 32 Bytes - String: 块中的最终状态树根节点
miner - String: 接收奖励的矿工地址
difficulty - String: 该块的难度值
totalDifficulty - String: 截至该块的全链总难度值
extraData - String: 块 “extra data” 字段
size - Number: 字节为单位的块大小
gasLimit - Number: 该块允许的最大gas值
gasUsed - Number: 该块中所有交易使用的gas总量
timestamp - Number: 出块的unix时间戳
transactions - Array: 交易对象数组，或者32字节长的交易哈希值，取决于returnTransactionObjects的设置
uncles - Array: 叔伯块哈希值数组
(11) platon.getBlockTransactionCount()

方法返回指定块中的交易数量。

调用：
```
platon.getBlockTransactionCount(blockHashOrBlockNumber)
```
参数：
- blockHashOrBlockNumber：String|Number - 块编号或块的哈希值，或者使用以下字符串："genesis"、"latest" 或 "pending" 来指定块

返回值：

一个AttributeDict对象，其解析值为指定块中的交易数量，Number类型。

(12) platon.getTransaction()

返回具有指定哈希值的交易对象。

调用：
```
platon.getTransaction(transactionHash)
```
参数：
- transactionHash：String - 交易的哈希值
返回值：

一个AttributeDict对象，其解析值为具有给定哈希值的交易对象。该对象具体内容描述参见platon.waitForTransactionReceipt。
(13) platon.getRawTransaction()

返回具有指定哈希值的交易对象HexBytes 值。

调用：
```
platon.getRawTransaction(transactionHash )
```
参数：
- transactionHash：String - 交易的哈希值
返回值：

一个HexBytes 值的对象。
(14) platon.getTransactionFromBlock()

返回指定块中特定索引号的交易对象。

调用：
```
getTransactionFromBlock(hashStringOrNumber, indexNumber )
```
参数：
- hashStringOrNumber：String - 块编号或块的哈希值，或者使用以下字符串："genesis、"latest" 或 "pending" 来指定块
- indexNumber：Number - 交易索引位置
返回值：

一个AttributeDict对象，其解析值为交易对象，该对象具体内容描述参见platon.getTransaction()
(15) platon.getTransactionByBlock()

返回指定块中特定索引号的交易对象。

调用：
```
platon.getTransactionByBlock(hashStringOrNumber, indexNumber )
```
参数：
- hashStringOrNumber：Number |String - 块编号或块的哈希值，或者使用以下字符串："genesis、"latest" 或 "pending" 来指定块
- indexNumber：Number - 交易索引位置
返回值：

一个AttributeDict对象，其解析值为交易对象，该对象具体内容描述参见platon.getTransaction()

5 链上发送交易api：

(1) sendTransaction(transactionObject)

向platon 链上提交一个交易（已被节点签名，尚未提交的交易）

参数：
- transactionObject：Object - 要发送的交易对象，包含以下字段：
  - from - String|Number: 交易发送方账户地址，不设置该字段的话，则使用platon.defaultAccount属性值。可设置为一个地址或本地钱包platon.accounts.wallet中的索引序号
  - to - String: 可选，消息的目标地址，对于合约创建交易该字段为null
  - value - Number|String|BN|BigNumber: (optional) The value transferred for the transaction in VON, also the endowment if it’s a contract-creation transaction.
  - gas - Number: 可选，默认值：待定，用于交易的gas总量，未用完的gas会退还
  - gasPrice - Number|String|BN|BigNumber: 可选，该交易的gas价格，单位为VON，默认值为platon.gasPrice属性值
  - data - String: 可选，可以是包含合约方法数据的ABI字符串，或者是合约创建交易中的初始化代码
  - nonce - Number: 可选，使用该字段覆盖使用相同nonce值的挂起交易
返回值：

platon.sendTransaction()方法的返回值是32字节长的交易哈希值。
(2) waitForTransactionReceipt(transaction_hash, timeout)

指定时间内返回指定交易的收据对象

参数：
- transaction_hash：String - 交易的哈希值。
- timeout：Number- 可选的等待时间长度，单位为秒。默认为120。
返回值：

一个AttributeDict对象，其解析值为交易的收据对象或者null。收据对象具有如下字段：
- blockHash 32 Bytes - String: 交易所在块的哈希值
- blockNumber - Number: 交易所在块的编号
- transactionHash 32 Bytes - String: 交易的哈希值
- transactionIndex - Number: 交易在块中的索引位置
- from - String: 交易发送方的地址
- to - String: 交易接收方的地址，对于创建合约的交易，该值为null
- contractAddress - String: 对于创建合约的交易，该值为创建的合约地址，否则为null
- cumulativeGasUsed - Number: 该交易执行时所在块的gas累计总用量
- gasUsed- Number: 该交易的gas总量
- logs - Array: 该交易产生的日志对象数组

sendTransaction、waitForTransactionReceipt 使用方法示例如下：

# sendtransaction
to = 'lax1qqqjkfwu854vf3ze2dpy5gctmxy3gdgzsngj66'
w3.personal.unlockAccount(address, "password", 999999)
data = {
    "from": address,
    "to": to,
    "value": 0x10909,
    "gas": 1000000,
    "gasPrice": 1000000000,
}
transaction_hex = HexBytes(platon.sendTransaction(data)).hex()
result = platon.waitForTransactionReceipt(transaction_hex)
print(result)

#输出 
AttributeDict({'blockHash': HexBytes('0x7bfe17689560c773b1cade579f1bd2cf85aeea9f75177e0e06bcdb4aeebd31a8'), 'blockNumber': 385507, 'contractAddress': None, 'cumulativeGasUsed': 21000, 'from': 'lax1yjjzvjph3tw4h2quw6mse25y492xy7fzwdtqja', 'gasUsed': 21000, 'logs': [], 'logsBloom': HexBytes('0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000'), 'status': 1, 'to': 'lax1qqqjkfwu854vf3ze2dpy5gctmxy3gdgzsngj66', 'transactionHash': HexBytes('0x377fcd0dfb5e294041fe4274175ed7fce253973fac7abf4e4ff808b5099a454c'), 'transactionIndex': 0})

(3) platon.getTransactionReceipt()

返回指定交易的收据对象。如果交易处于pending状态，则返回null。

调用：
```
platon.getTransactionReceipt(hash)
```
参数：
- hash：String - 交易的哈希值
返回值：

一个AttributeDict对象，其解析值为交易的收据对象或者null。该对象具体内容描述参见platon.waitForTransactionReceipt。
(4) platon.getTransactionCount()

返回指定地址发出的交易数量。

调用：
```
platon.getTransactionCount(address [, defaultBlock] )
```
参数：
- address：String - 要查询的账户地址
- defaultBlock：Number|String - 可选，设置该参数来覆盖platon.defaultBlock属性值
返回值：

一个AttributeDict对象，其解析值为指定地址发出的交易数量。
（6）platon.sendRawTransaction()

向platon 链上提交一个签名的序列化的交易

platon.sendRawTransaction(signTransaction，private-key)


参数：

- `signTransaction`：Object - 要发送的签名交易对象，包含以下字段：
  - from - String|Number: 交易发送方账户地址，不设置该字段的话，则使用platon.defaultAccount属性值。可设置为一个地址或本地钱包platon.accounts.wallet中的索引序号
  - to - String: 可选，消息的目标地址，对于合约创建交易该字段为null
  - value - Number|String|BN|BigNumber: (optional) The value transferred for the transaction in VON, also the endowment if it’s a contract-creation transaction.
- gas - Number: 可选，默认值：待定，用于交易的gas总量，未用完的gas会退还
  - gasPrice - Number|String|BN|BigNumber: 可选，该交易的gas价格，单位为VON，默认值为platon.gasPrice属性值
- data - String: 可选，可以是包含合约方法数据的ABI字符串，或者是合约创建交易中的初始化代码
  - nonce - Number: 可选，使用该字段覆盖使用相同nonce值的挂起交易

- private-key : 用于签名的私钥

返回值：

返回值是包含32字节长的交易哈希值的HexBytes 。



- ##### (7) platon.replaceTransaction()

发送新的交易new_transaction，替代原来的交易transaction_hash（pending状态）

调用：

```python
platon.replaceTransaction`(transaction_hash,new_transaction)

参数：

transaction_hash - string：处于pending状态的交易的hash值。
new_transaction - dict：交易对象，包含字段与sendTransaction中的transactionObject一致。

返回值：

new_transaction 的hash值

(8) platon.generateGasPrice()

使用选中的gas price 策略去计算一个gas price

调用：
```
platon.generateGasPrice(gas_price_strategy)
```

返回值：

以wei为单位的gas price数值

(9) platon.setGasPriceStrategy()

设定选定的gas price 策略

调用：
```
platon.setGasPriceStrategy(gas_price_strategy)
```
参数：

gas_price_strategy ：(web3, transaction_params) ,必须是一种签名的方法。

返回：

以wei为单位的gas price数值
(10) platon.modifyTransaction()

发送新的参数，去修正处于pending状态的交易

调用：
```
platon.modifyTransaction(transaction_hash, **transaction_params)
```
参数：
- transaction_hash -string : 处于pending状态的交易的hash值。
- transaction_params : 与transaction_hash的参数对应的关键词语句。如 value=1000,将原交易中的value值改为1000
返回：

修正后的交易的hash值
(11) platon.sign()

方法使用指定的账户对数据进行签名，该账户必须先解锁。

调用：
```
platon.sign(dataToSign, address )
```
参数：
- dataToSign：String - 待签名的数据。对于字符串将首先使用utils.utf8ToHex()方法将其转换为16进制
- address：String|Number - 用来签名的账户地址。或者本地钱包platon.accounts.wallet中的地址或其序号
返回值：

签名结果字符串。
(12) platon.estimateGas()

通过执行一个消息调用来估算交易的gas用量。

调用：
```
platon.estimateGas(callObject)
```
参数：
- callObject：Object - 交易对象，其from属性可选
返回值：

模拟调用的gas用量。

6 其他 api

(1) platon.filter

生成一个新的过滤器，根据参数的不同，生成不同类型的过滤器

调用：
```
platon.filter(params)
```
参数：
- params
  - 'latest'，在节点中创建一个过滤器，以便当新块生成时进行通知。要检查状态是否变化
  - 'pending' ，在节点中创建一个过滤器，以便当产生挂起交易时进行通知。要检查状态是否发生变化
  - 字典类数据，创建一个过滤器，以便在客户端接收到匹配的whisper消息时进行通知
```
>>> platon.filter('latest')
<client_sdk_python.utils.filters.BlockFilter object at 0x0000020640DA1048>
>>> platon.filter('pending')
<client_sdk_python.utils.filters.TransactionFilter object at 0x0000020640DA7C08>
>>> platon.filter({'fromBlock': 1000000, 'toBlock': 1000100, 'address': 'lax1yjjzvjph3tw4h2quw6mse25y492xy7fzwdtqja'})
<client_sdk_python.utils.filters.LogFilter object at 0x0000020640B09D88>
```

(2) platon.getFilterChanges()

轮询指定的过滤器，并返回自上次轮询之后新生成的日志数组

调用：

platon.getFilterChanges(filter_id)

参数：

filter_id : 指定的过滤器的filter_id

示例：

>>> filt=platon.filter('latest')
>>>platon.getFilterChanges(filt.filter_id)
[HexBytes('0x59c4cb22c15ed83279e288ccc94980162e7cc7c1ff9c6b4fb6d9584308727b46'), HexBytes('0xb205babee34ba218816d1a32e995a4c8f4ccf95d3315c6a259955f1598ed5e4d'), HexBytes('0xb491ef8c0cc55cc1b70e9af766ada828a5a96bbb41f6aa26b87c98dbf09ac762'), HexBytes('0x455ae7bee30a02210fc17ade1cec3d783ce9614f81149ea650efc27a39e495a5'), HexBytes('0xd8c8f327e6613dc9a638c4ad2e2e37ce511ea80d374fea91d961d3fb55ed0e3a'), HexBytes('0x92e85ab7340ae8f6c0da6d5fa5cab5a3ae61f7d69158b612b7caf470de4e0958'), HexBytes('0x612d8f92bdec45052576b62a03a5c6d5b219ad5eecf088163cc629efc506a4dc'), HexBytes('0xd433b552bf421ee416c31d7c9162d8f08a7580d906538a3e0156f504161c6889'), HexBytes('0x5f9d64faf699f6e688989bcb6133c001cd5d24315c22375c5f1935909ee5b31e'), HexBytes('0x70b10afd243a5f6c0992bdb80bf75974cf3b8b78c254c054e6824621d2a55a33'), HexBytes('0x5f631fc85544b8e04504a71e99a67f8020596221ecfbefefde98fb44f4c3cf65'), HexBytes('0x6012ab1a562e818e4ca3e6e1b719e21cd900ac1daaf26c87f983c75e2cddd9ab'), HexBytes('0x2cc3d3e257dd9af953968a75a653cd9cfb0f6157aca1ba3089ebfe65d32c3543'), HexBytes('0x3696eea818d042c0cae606093262268ec36aa0f23904101cdb25d7c1595bbeae'), HexBytes('0x4825078dc7cfb3f065acd1d300a3c111b51445488862bebd44801af6272d36cd'), HexBytes('0x3df27825fa9e89b91f83df4769ae6477bf060c5ff078e8f1b05edee136368f4f'), HexBytes('0x9e7bdf9ef1ce7e66b3615fa882fa420dfefe3c93efb433ff824d6c7fa73e08ca'), HexBytes('0x0d8f9a5a5cd4e95a57f6183c94826861a259e631d0127f4b0f268e104bc3c92e'), HexBytes('0xa310dbde88c8721fad793c7f2cb594b2bec108482990d2c56e3dc427f09d21af'), HexBytes('0x2e944efb7d3cf8bf9c354a02b34cbc262a044b5e2fd484daad8f7b81663e4cb0'), HexBytes('0x19c72519b3fcf6d74bcef061f0f6b12eabbf9cb13d482db38b94e1fb86dd4b25'), HexBytes('0x435956b99ce8d0777d5d7e19e87d3277eccd757a56da6d100fb7b536ff417ded'), HexBytes('0xe291f184a80c1c65a44198ed8c2d35d5ef98f65dada59a0e1fc28aa21bbe69ea'), HexBytes('0x21b088023a06a9c85b16fcdd6bab07697905241a139d8a3efc0e0e7a9d7a00a0'), HexBytes('0x6bf9d36ec461b66191ec8f026bec905a0f46a83707960987bb559d13a5186082'), HexBytes('0x85aaf311fe7c2c80340f334b7f52bb0c4282341559e056e852e92135bc04e917'), HexBytes('0x033e7b67bd5f509de11e38cc142a70def69048f5d214ac5d15e83102a93a011d'), HexBytes('0x02d55d41e12ea9edd986da149e42f302719ad769eb4496872271c063a6ab3bcd'), HexBytes('0x3914a9fcf5be7aca72a50d59a1b7cdb18f96540dafba0de84f8297228cb9159a'), HexBytes('0xc45b0552883b21012431f9e76ccd5ce9e3c8550ecbbb223a1d69ebc6a354b34d'), HexBytes('0xbfa4324da6aafa66907586c535a2207a082063670fff102f8df19ab1a4e665d0')]

(3) platon.getFilterLogs()

轮询指定的过滤器，并返回对应的日志数组

调用：
```
platon.getFilterLogs(filter_id)
```
参数：
- filter_id : 指定的过滤器的filter_id
(4) platon.uninstallFilter()

卸载指定的过滤器，返回成功或失败的bool值

调用：
```
platon.getFilterLogs(filter_id)
```
- 参数：
  - filter_id : 指定的过滤器的filter_id
示例：
```
>>> platon.uninstallFilter(filt.filter_id)
True
```
(5) platon.getLogs()

根据指定的选项返回历史日志。

调用：
```
platon.getLogs(options )
```
参数：
- options：Object - 过滤器对象，包含如下字段：
  - fromBlock - Number|String: The number of the earliest block ("latest" may be given to mean the most recent and "pending" currently mining, block). By default "latest".
  - toBlock - Number|String: The number of the latest block ("latest" may be given to mean the most recent and "pending" currently mining, block). By default "latest".
  - address - String|Array: An address or a list of addresses to only get logs from particular account(s).
  - topics - Array: An array of values which must each appear in the log entries. The order is important, if you want to leave topics out use null, e.g. [null, '0x12...']. You can also pass an array for each topic with options for that topic e.g. [null, ['option1', 'option2']]
返回值：

一个AttributeDict对象，其解析值为日志对象数组。

数组中的事件对象结构如下：
- address - String: 事件发生源地址
- data - String: 包含未索引的日志参数
- topics - Array: 包含最多4个32字节主题的数组，主题1-3包含日志的索引参数
- logIndex - Number: 事件在块中的索引位置
- transactionIndex - Number: 包含事件的交易的索引位置
- transactionHash 32 Bytes - String: 包含事件的交易的哈希值
- blockHash 32 Bytes - String: 包含事件的块的哈希值，如果处于pending状态，则为null
- blockNumber - Number: 包含事件的块编号，处于pending状态时该字段为null
(6) functions()

调用合约函数的入口

调用：
```
myContract.functions.myMethod([param1[, param2[, ...]]]).transact(options)
```
参数：
- options - Object : 选项，包含如下字段：
  - from - String (optional): The address the call “transaction” should be made from.
  - gasPrice - String (optional): The gas price in VON to use for this call “transaction”.
  - gas - Number (optional): The maximum gas provided for this call “transaction” (gas limit).

(7) call()

调用合约的方法，并在合约中直接执行方法，不需要发送任何交易。因此不会改变合约的状态。

调用：

myContract.functions.myMethod([param1[, param2[, ...]]]).call()

参数：

[param1[, param2[, ...]]] : 根据myMethod中定义的数据类型输入的参数

返回值：

解析值为合约方法的返回值，Mixed类型。如果合约方法返回多个值，则解析值为一个对象。

tx_hash1 = payable.functions.setInt64(-9223372036854775808).transact(
    {
        'from':from_address,
        'gas':1500000,
    }
)
print(platon.waitForTransactionReceipt(tx_hash1))
print('get : {}'.format(
    payable.functions.getInt64().call()
))

#输出
get : -9223372036854775808

(8) events

订阅指定的合约事件。

调用：

myContract.events.MyEvent([options])

参数：

options - Object: 可选，用于部署的选项，包含以下字段：
- filter - Object : 可选，按索引参数过滤事件。例如 {filter: {myNumber: [12,13]}} 表示 “myNumber” 为12或13的所有事件
- fromBlock - Number: 可选，仅监听该选项指定编号的块中发生的事件
- topics - Array : 可选，用来手动为事件过滤器设定主题。如果设置过filter属性和事件签名，那么(topic[0])将不会自动设置

返回值：

EventEmitter: 事件发生器，声明有以下事件:

"data" 返回 Object: 接收到新的事件时触发，参数为事件对象
"changed" 返回 Object: 当事件从区块链上移除时触发，该事件对象将被添加额外的属性"removed: true"
"error" 返回 Object: 当发生错误时触发

返回的事件对象结构如下：

event - String: 事件名称
signature - String|Null: 事件签名，如果是匿名事件，则为null
address - String: 事件源地址
returnValues - Object: 事件返回值，例如 {myVar: 1, myVar2: '0x234...'}.
logIndex - Number: 事件在块中的索引位置
transactionIndex - Number: 事件在交易中的索引位置
transactionHash 32 Bytes - String: 事件所在交易的哈希值
blockHash 32 Bytes - String: 事件所在块的哈希值，pending的块该值为 null
blockNumber - Number: 事件所在块的编号，pending的块该值为null
raw.data - String: 该字段包含未索引的日志参数
raw.topics - Array: 最多可保存4个32字节长的主题字符串数组。主题1-3 包含事件的索引参数

示例代码：

greeter = platon.contract(address=tx_receipt.contractAddress, abi=abi)

tx_hash = greeter.functions.setVar(100).transact(
    {
        'from':from_address,
        'gas':1500000,
    }
)

tx_receipt = platon.waitForTransactionReceipt(tx_hash)
print(tx_receipt)

topic_param = greeter.events.MyEvent().processReceipt(tx_receipt)
print(topic_param)

#输出：
AttributeDict({'blockHash': HexBytes('0x78fb61da83dae555c8a8a87fc3296f466afeb7f90e9a3b0ac5689e8b34435174'), 'blockNumber': 2014683, 'contractAddress': None, 'cumulativeGasUsed': 43148, 'from': 'lax1uqug0zq7rcxddndleq4ux2ft3tv6dqljphydrl', 'gasUsed': 43148, 'logs': [AttributeDict({'address': 'lax1vc6phdxhdkmztpznv5ueduw6cae3swe40whlsn', 'topics': [HexBytes('0x6c2b4666ba8da5a95717621d879a77de725f3d816709b9cbe9f059b8f875e284'), HexBytes('0x0000000000000000000000000000000000000000000000000000000000000064')], 'data': '0x', 'blockNumber': 2014683, 'transactionHash': HexBytes('0xe36b5d2b679d5635ab6dd2b620caa50a476fa84bd93bf7b6c8de807f3a9da483'), 'transactionIndex': 0, 'blockHash': HexBytes('0x78fb61da83dae555c8a8a87fc3296f466afeb7f90e9a3b0ac5689e8b34435174'), 'logIndex': 0, 'removed': False})], 'logsBloom': HexBytes('0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010000000000000000000020080000000000000000000000000000000000000000000000000000000000000000000000040000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000080000000000000000000000000000000000000000000000000000000000000004000000000000000000000000400000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001000000008000000000000000'), 'status': 1, 'to': 'lax1vc6phdxhdkmztpznv5ueduw6cae3swe40whlsn', 'transactionHash': HexBytes('0xe36b5d2b679d5635ab6dd2b620caa50a476fa84bd93bf7b6c8de807f3a9da483'), 'transactionIndex': 0})
(AttributeDict({'args': AttributeDict({'_var': 100}), 'event': 'MyEvent', 'logIndex': 0, 'transactionIndex': 0, 'transactionHash': HexBytes('0xe36b5d2b679d5635ab6dd2b620caa50a476fa84bd93bf7b6c8de807f3a9da483'), 'address': 'lax1vc6phdxhdkmztpznv5ueduw6cae3swe40whlsn', 'blockHash': HexBytes('0x78fb61da83dae555c8a8a87fc3296f466afeb7f90e9a3b0ac5689e8b34435174'), 'blockNumber': 2014683}),)

7.获取hrp

w3 = Web3(HTTPProvider("http://localhost:6789"))
platon = PlatON(w3)
print(platon.getAddressHrp)

三、合约

1 、合约介绍

PlatON区块链支持使用solidity语言创建的智能合约(evm)，同时也支持WebAssembly (WASM)来执行用户编写的智能合约。其中WASM是一种为栈式虚拟机设计的二进制指令集。WASM被设计为可供类似C/C++/Rust等高级语言的平台编译目标，最初设计目的是解决 JavaScript 的性能问题。WASM是由 W3C 牵头正在推进的 Web 标准，并得到了谷歌、微软和 Mozilla 等浏览器厂商的支持。

关于evm和wasm合约的介绍、创建、编译等详细内容可参考Platon智能合约

2、合约编译

python sdk目前支持evm、wasm合约编译后形成的bin和abi作为合约数据与PlatON区块链进行交互。

(1) evm合约(使用solidity语言创建)可使用platon-truffle进行编译、部署、调用。具体可参考solidity编译器与platon-truffle
(2) wasm合约(使用C/C++/Rust等语言创建)可使用PlatON-CDT 或者platon-truffle进行编译、部署、调用。具体可参考PlatON-CDT 编译器

3、SDK 对evm合约的调用

(1) 使用platon-truffle在本机对evm合约进行编译

获得bin与abi。以Helloworld合约为例。

使用platon-truffle对Helloworld.sol编译后，产生的build/contracts/HelloWorld.json中，获取其中的abi和bytecode(即bin)。

(2) 通过python SDK对Helloworld合约部署

首先通过Web3连接节点

from_address为节点上的账户地址

bytecode、abi即为evm合约编译后的bin和abi

from hexbytes import HexBytes
from client_sdk_python import Web3, HTTPProvider
from client_sdk_python.eth import PlatON
from platon_keys.utils import bech32,address
from client_sdk_python.packages.eth_utils import to_checksum_address

true = True
false = False

w3 = Web3(HTTPProvider("http://10.1.1.5:6789"))
platon = PlatON(w3)
print(w3.isConnected())

from_address = "lax1yjjzvjph3tw4h2quw6mse25y492xy7fzwdtqja"

bytecode = '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'

abi = [{"constant":false,"inputs":[],"name":"doWhileControl","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"doWhileControlResult","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[],"name":"forBreakControl","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"forBreakControlResult","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[],"name":"forContinueControl","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"forContinueControlResult","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[],"name":"forControl","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"forControlResult","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[],"name":"forReturnControl","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"forReturnControlResult","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"internalType":"int256","name":"age","type":"int256"}],"name":"forThreeControlControl","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"forThreeControlControlResult","outputs":[{"internalType":"string","name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"getForBreakControlResult","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"getForContinueControlResult","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"getForControlResult","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"getForReturnControlResult","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"getForThreeControlControlResult","outputs":[{"internalType":"string","name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"getIfControlResult","outputs":[{"internalType":"string","name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"getdoWhileResult","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"internalType":"uint256","name":"age","type":"uint256"}],"name":"ifControl","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"ifControlResult","outputs":[{"internalType":"string","name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"}]

#输出
True
lax1yjjzvjph3tw4h2quw6mse25y492xy7fzwdtqja

然后通过函数contract_deploy(bytecode, fromAddress)，以发送交易的方式在PlatON区块链的节点上部署evm合约,返回交易哈希transactionHash 。

tx_receipt为platon.waitForTransactionReceipt解析transactionHash 后获得的部署回执（部署也是一种交易，交易通过platon.waitForTransactionReceipt获得交易回执）。

def contract_deploy(bytecode, fromAddress):
    bytecode = bytecode
    transactionHash = platon.sendTransaction(
        {
            "from": fromAddress,
            "gas": 1000000,
            "gasPrice": 1000000000,
            "data": bytecode,
        }
    )
    transactionHash = HexBytes(transactionHash).hex().lower()
    return transactionHash

tx = contract_deploy(bytecode, from_address)
print(tx)
tx_receipt = platon.waitForTransactionReceipt(tx)
print(tx_receipt)
contractAddress = tx_receipt.contractAddress
print(contractAddress)

platon.sendTransaction（参数）

参数：

"from" 发送交易的账户地址

"data" 发送到链上的数据

"gas" 交易的燃料量

"gasPrice" 燃料价格

需写入合理的数值

若部署成功，输出结果如下

#输出
0x143efc88f581c4356156519cde51064222ec5a42fcb4d83400a8b11893a95074
AttributeDict({'blockHash': HexBytes('0xf73097d8e7b2cc385910a4af3a4dbc7588774bad3f2b6589052503b649af1525'), 'blockNumber': 305798, 'contractAddress': 'lax1ws7m2tqr55h8xs7e3jg5svlyu0lk9ktpx03cke', 'cumulativeGasUsed': 319449, 'from': 'lax1yjjzvjph3tw4h2quw6mse25y492xy7fzwdtqja', 'gasUsed': 319449, 'logs': [], 'logsBloom': HexBytes('0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000'), 'status': 1, 'to': None, 'transactionHash': HexBytes('0x143efc88f581c4356156519cde51064222ec5a42fcb4d83400a8b11893a95074'), 'transactionIndex': 0})
lax1ws7m2tqr55h8xs7e3jg5svlyu0lk9ktpx03cke

其中

第一行数据为函数contract_deploy中的platon.sendTransaction的交易结果

第二行数据为platon.waitForTransactionReceipt获得的交易回执

第三行为合约部署成功的合约地址

(3) 对Helloworld合约进行调用(交易发送)

在之前合约部署成功的基础上，进行交易发送

首先定义一个函数SendTxn(txn)

包含：签名交易 platon.account.signTransaction （私钥签名）

发送交易 platon.sendRawTransaction

获得交易回执 platon.waitForTransactionReceipt

send_privatekey = "b7a7372e78160f71a1a75e03c4aa72705806a05cf14ef39c87fdee93d108588c"
def SendTxn(txn):
    signed_txn = platon.account.signTransaction(txn,private_key=send_privatekey)
    res = platon.sendRawTransaction(signed_txn.rawTransaction).hex()
    txn_receipt = platon.waitForTransactionReceipt(res)
    print(res)
    return txn_receipt

建立合约实例 contract_instance，因为是evm合约，所以使用函数contract。若是wasm合约，则对应函数wasmcontract。

通过functions调用方法ifControl，输入参数20，通过buildTransaction发送交易信息

contract_instance = platon.contract(address=contractAddress, abi=abi)

txn = contract_instance.functions.ifControl(20).buildTransaction(
    {
        'chainId':200,
        'nonce':platon.getTransactionCount(from_address),
        'gas':2000000,
        'value':0,
        'gasPrice':1000000000,
    }
)

print(SendTxn(txn))

result = contract_instance.functions.getIfControlResult().call()
print(result)

参数：

'chainId' 链id

'nonce' 序号

'gas' 燃料

'value' 值（新建合约账户的开始余额）

'gasPrice' 燃料价格

需写入合理的数值

调用方法ifControl，成功将参数20传入链上。然后通过对应方法getIfControlResult获得链上的对应信息和数据。

输出结果如下：

#输出：
0x16c76387cdd06ab82a4beb330b36369a5cfa22b8cf6ddfff58c72aaae4a39df9
AttributeDict({'blockHash': HexBytes('0xbb1d1c3a7abecac9910509ed3ff2ca97cebdba1e88db0b909ffd646a86d69597'), 'blockNumber': 305801, 'contractAddress': None, 'cumulativeGasUsed': 42382, 'from': 'lax1yjjzvjph3tw4h2quw6mse25y492xy7fzwdtqja', 'gasUsed': 42382, 'logs': [], 'logsBloom': HexBytes('0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000'), 'status': 1, 'to': 'lax1ws7m2tqr55h8xs7e3jg5svlyu0lk9ktpx03cke', 'transactionHash': HexBytes('0x16c76387cdd06ab82a4beb330b36369a5cfa22b8cf6ddfff58c72aaae4a39df9'), 'transactionIndex': 0})

you are a middle man


 其中 第一行数据为函数SendTxn中的platon.sendRawTransaction的交易结果

        第二行数据为方法ifControl向链上发送信息，交易的结果

        第三行为方法getIfControlResult获取链上信息，交易的结果



- ##### (4) evm合约的事件调用

evm合约通过事件可对相关交易的详细信息进行监听和日志记录输出

以evmevent合约为例：其在方法setVar中加入了event类型MyEvent。

greeter为部署成功的evm合约。

先通过functions调用setVar,将参数传到链上

然后通过greeter.events.MyEvent()，调用事件输出交易的详细日志。

其中.events方法为合约专用的事件api。

```python
greeter = platon.contract(address=tx_receipt.contractAddress, abi=abi)

tx_hash = greeter.functions.setVar(100).transact(
    {
        'from':from_address,
        'gas':1500000,
    }
)

tx_receipt = platon.waitForTransactionReceipt(tx_hash)
print(tx_receipt)

topic_param = greeter.events.MyEvent().processReceipt(tx_receipt)
print(topic_param)

成功运行后输出：

AttributeDict({'blockHash': HexBytes('0x78fb61da83dae555c8a8a87fc3296f466afeb7f90e9a3b0ac5689e8b34435174'), 'blockNumber': 2014683, 'contractAddress': None, 'cumulativeGasUsed': 43148, 'from': 'lax1uqug0zq7rcxddndleq4ux2ft3tv6dqljphydrl', 'gasUsed': 43148, 'logs': [AttributeDict({'address': 'lax1vc6phdxhdkmztpznv5ueduw6cae3swe40whlsn', 'topics': [HexBytes('0x6c2b4666ba8da5a95717621d879a77de725f3d816709b9cbe9f059b8f875e284'), HexBytes('0x0000000000000000000000000000000000000000000000000000000000000064')], 'data': '0x', 'blockNumber': 2014683, 'transactionHash': HexBytes('0xe36b5d2b679d5635ab6dd2b620caa50a476fa84bd93bf7b6c8de807f3a9da483'), 'transactionIndex': 0, 'blockHash': HexBytes('0x78fb61da83dae555c8a8a87fc3296f466afeb7f90e9a3b0ac5689e8b34435174'), 'logIndex': 0, 'removed': False})], 'logsBloom': HexBytes('0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010000000000000000000020080000000000000000000000000000000000000000000000000000000000000000000000040000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000080000000000000000000000000000000000000000000000000000000000000004000000000000000000000000400000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001000000008000000000000000'), 'status': 1, 'to': 'lax1vc6phdxhdkmztpznv5ueduw6cae3swe40whlsn', 'transactionHash': HexBytes('0xe36b5d2b679d5635ab6dd2b620caa50a476fa84bd93bf7b6c8de807f3a9da483'), 'transactionIndex': 0})
(AttributeDict({'args': AttributeDict({'_var': 100}), 'event': 'MyEvent', 'logIndex': 0, 'transactionIndex': 0, 'transactionHash': HexBytes('0xe36b5d2b679d5635ab6dd2b620caa50a476fa84bd93bf7b6c8de807f3a9da483'), 'address': 'lax1vc6phdxhdkmztpznv5ueduw6cae3swe40whlsn', 'blockHash': HexBytes('0x78fb61da83dae555c8a8a87fc3296f466afeb7f90e9a3b0ac5689e8b34435174'), 'blockNumber': 2014683}),)

第一行为调用函数setVar，交易成功后的交易回执

第二行为调用事件MyEvent()，获取的交易日志信息

其中'args'对应的值中：

'_var'为唯一的参数值

而在evm合约的event中，数据的基本类型为uint、int、bool、address、bytex。

4、SDK 对wasm合约的调用：

(1) 使用PlatON-CDT在本机对wasm合约进行编译

以wasmcontract.cpp为例。本机安装PlatON-CDT成功后，在PlatON-CDT/build/bin中输入代码
```
platon-cpp wasmcontract.cpp
```
编译成功后，在wasmcontract/build/contracts中有两个文件

wasmcontract.abi.json 与 wasmcontract.wasm，其中wasmcontract.abi.json为abi数据（json格式）， wasmcontract.wasm为bin数据（二进制格式）。
```
 import binascii
 f = open('D:/wasmcontract.wasm','rb')
 contents=f.read()
 bytecode=binascii.b2a_hex(contents)
```
因为我们的链上识别的是16进制的数据，所以需通过类似binascii.b2a_hex等方法，把二进制的.wasm转换为16进制的bytecode。方便我们链上识别。

(2) 通过python SDK对Helloworld合约(wasm类型)部署

获取wasm合约的bin和abi之后，通过Web3在链上进行部署

下面代码中bytecode即为合约的bin数据，cabi即为合约的abi数据

from client_sdk_python import Web3, HTTPProvider
from client_sdk_python.eth import PlatON
true = True
false = False

w3 = Web3(HTTPProvider("http://10.1.1.2:6789"))
platon = PlatON(w3)
print(w3.isConnected())
from_address = "lax1uqug0zq7rcxddndleq4ux2ft3tv6dqljphydrl"

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cabi = [{"constant":false,"input":[{"name":"input","type":"string[10]"}],"name":"setArray","output":"void","type":"Action"},{"constant":true,"input":[],"name":"getUint32","output":"uint32","type":"Action"},{"constant":false,"input":[{"name":"input","type":"int64"}],"name":"setInt64","output":"void","type":"Action"},{"constant":true,"input":[],"name":"getInt64","output":"int64","type":"Action"},{"constant":false,"input":[{"name":"input","type":"pair<string,int32>"}],"name":"setPair","output":"void","type":"Action"},{"constant":true,"input":[],"name":"getPair","output":"pair<string,int32>","type":"Action"},{"anonymous":false,"input":[{"name":"topic","type":"string"},{"name":"arg1","type":"string"}],"name":"transfer","topic":1,"type":"Event"},{"anonymous":false,"input":[{"name":"topic","type":"string"},{"name":"arg1","type":"string"},{"name":"arg2","type":"uint16"}],"name":"setUint16Evt","topic":1,"type":"Event"},{"constant":false,"input":[{"name":"addr","type":"FixedHash<20>"}],"name":"setAddress","output":"void","type":"Action"},{"anonymous":false,"input":[{"name":"topic1","type":"string"},{"name":"topic2","type":"uint32"},{"name":"arg1","type":"string"},{"name":"arg2","type":"uint32"},{"name":"arg3","type":"uint32"}],"name":"setUint32Evt","topic":2,"type":"Event"},{"constant":false,"input":[],"name":"init","output":"void","type":"Action"},{"constant":false,"input":[{"name":"input","type":"uint8"}],"name":"setUint8","output":"void","type":"Action"},{"baseclass":[],"fields":[{"name":"head","type":"string"}],"name":"message","type":"struct"},{"constant":false,"input":[{"name":"msg","type":"message"}],"name":"setMessage","output":"void","type":"Action"},{"constant":true,"input":[],"name":"getUint8","output":"uint8","type":"Action"},{"constant":false,"input":[{"name":"input","type":"uint16"}],"name":"setUint16","output":"void","type":"Action"},{"constant":true,"input":[],"name":"getUint16","output":"uint16","type":"Action"},{"constant":false,"input":[{"name":"input","type":"uint32"}],"name":"setUint32","output":"void","type":"Action"},{"constant":false,"input":[{"name":"input","type":"uint64"}],"name":"setUint64","output":"void","type":"Action"},{"constant":true,"input":[],"name":"getUint64","output":"uint64","type":"Action"},{"constant":false,"input":[{"name":"input","type":"string"}],"name":"setString","output":"void","type":"Action"},{"constant":true,"input":[],"name":"getString","output":"string","type":"Action"},{"constant":false,"input":[{"name":"input","type":"bool"}],"name":"setBool","output":"void","type":"Action"},{"constant":true,"input":[],"name":"getBool","output":"bool","type":"Action"},{"constant":false,"input":[{"name":"input","type":"int8"}],"name":"setChar","output":"void","type":"Action"},{"constant":true,"input":[],"name":"getChar","output":"int8","type":"Action"},{"constant":true,"input":[],"name":"getMessage","output":"message","type":"Action"},{"baseclass":["message"],"fields":[{"name":"body","type":"string"},{"name":"end","type":"string"}],"name":"my_message","type":"struct"},{"constant":false,"input":[{"name":"msg","type":"my_message"}],"name":"setMyMessage","output":"void","type":"Action"},{"constant":true,"input":[],"name":"getMyMessage","output":"my_message","type":"Action"},{"constant":false,"input":[{"name":"input","type":"int8"}],"name":"setInt8","output":"void","type":"Action"},{"constant":true,"input":[],"name":"getSet","output":"set<string>","type":"Action"},{"constant":true,"input":[],"name":"getInt8","output":"int8","type":"Action"},{"constant":false,"input":[{"name":"input","type":"int16"}],"name":"setInt16","output":"void","type":"Action"},{"constant":true,"input":[],"name":"getInt16","output":"int16","type":"Action"},{"constant":false,"input":[{"name":"input","type":"int32"}],"name":"setInt32","output":"void","type":"Action"},{"constant":true,"input":[],"name":"getInt32","output":"int32","type":"Action"},{"constant":false,"input":[{"name":"vec","type":"uint16[]"}],"name":"setVector","output":"void","type":"Action"},{"constant":true,"input":[],"name":"getVector","output":"uint16[]","type":"Action"},{"constant":false,"input":[{"name":"input","type":"map<string,string>"}],"name":"setMap","output":"void","type":"Action"},{"constant":true,"input":[],"name":"getMap","output":"map<string,string>","type":"Action"},{"constant":false,"input":[{"name":"msg","type":"message"},{"name":"input1","type":"int32"},{"name":"input2","type":"bool"}],"name":"testMultiParams","output":"void","type":"Action"},{"constant":false,"input":[{"name":"input","type":"uint8[]"}],"name":"setBytes","output":"void","type":"Action"},{"constant":true,"input":[],"name":"getBytes","output":"uint8[]","type":"Action"},{"constant":true,"input":[],"name":"getArray","output":"string[10]","type":"Action"},{"constant":false,"input":[{"name":"input","type":"set<string>"}],"name":"setSet","output":"void","type":"Action"},{"constant":false,"input":[{"name":"input","type":"FixedHash<256>"}],"name":"setFixedHash","output":"void","type":"Action"},{"constant":true,"input":[],"name":"getFixedHash","output":"FixedHash<256>","type":"Action"},{"constant":false,"input":[{"name":"input","type":"list<string>"}],"name":"setList","output":"void","type":"Action"},{"constant":true,"input":[],"name":"getList","output":"list<string>","type":"Action"},{"constant":true,"input":[],"name":"getAddress","output":"FixedHash<20>","type":"Action"}]

wasm类型合约通过platon.wasmcontract建立合约实例

对实例调用方法.constructor()进行合约的构建，通过transact发送交易到链上

  # Instantiate and deploy contract
Payable = platon.wasmcontract(abi=cabi, bytecode=bytecode,vmtype=1)
  
tx_hash = Payable.constructor().transact(
      {
          'from':from_address,
          'gas':1500000,
      }
  )
  
  # Wait for the transaction to be mined, and get the transaction receipt
  tx_receipt = platon.waitForTransactionReceipt(tx_hash)
  print(tx_receipt)

其中tx_receipt为此次部署合约的交易回执

部署成功后输出如下

  #输出
AttributeDict({'blockHash': HexBytes('0x7a193be2cf86aedcf844c0478c6f64d226affb55779bad1b2056c7e70e8158d6'), 'blockNumber': 2012981, 'contractAddress': 'lax15sh4rpuqr4fvzs4cyj9uea54r5tax7kljqqszk', 'cumulativeGasUsed': 1233168, 'from': 'lax1uqug0zq7rcxddndleq4ux2ft3tv6dqljphydrl', 'gasUsed': 1233168, 'logs': [], 'logsBloom': HexBytes('0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000'), 'status': 1, 'to': None, 'transactionHash': HexBytes('0x717a82ea0ef116e271fb02dbb7d456fe9dd41a2dbd07cac81d079e375b5dade1'), 'transactionIndex': 0})

(3) 对Helloworld合约进行交易发送(wasm合约)

在之前合约部署成功的基础上，对合约中的方法进行调用。

payable是合约部署成功后的实例

通过调用函数setBool，向链上传送参数false（发送交易）

payable = platon.wasmcontract(address=tx_receipt.contractAddress, abi=cabi,vmtype=1)

tx_hash0 = payable.functions.setBool(false).transact(
    {
        'from':from_address,
        'gas':1500000,
    }
)
print(platon.waitForTransactionReceipt(tx_hash0))
print('get : {}'.format(
    payable.functions.getBool().call()
))

payable.functions.getBool().call()，表示通过函数getBool获得链上对应的信息（按照本合约定义，获得setBool上传的参数)。

成功运行后，结果如下：

#输出
AttributeDict({'blockHash': HexBytes('0x9bcadf4db5d74789901b2176cb7dad3191d2425b61f261966e932f6606d13041'), 'blockNumber': 2018575, 'contractAddress': None, 'cumulativeGasUsed': 426496, 'from': 'lax1uqug0zq7rcxddndleq4ux2ft3tv6dqljphydrl', 'gasUsed': 426496, 'logs': [], 'logsBloom': HexBytes('0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000'), 'status': 1, 'to': 'lax1c5h59flven2hzyrylh2tsmn59r5ucms95n5ugc', 'transactionHash': HexBytes('0x4c724e7d1833ade363f51f611293682771318e3c86b533f5a78b580c812eb009'), 'transactionIndex': 0})
get : False

(4) wasm合约的事件调用

wasm合约中的事件,一般写在合约的函数中。

以wasmcontract合约为例，在方法setUint32含有事件setUint32Evt，可通过setUint32Evt对setUint32的交易结果进行监听和日志记录输出

greeter是部署成功的wasm类型合约实例

tx_hash是函数setUint32传参数的交易实例

greeter = platon.wasmcontract(address=tx_receipt.contractAddress, abi=abi,vmtype=1)
tx_hash = greeter.functions.setUint32(1000).transact(
    {
        'from': from_address,
        'gas': 1500000,
    }
)

tx_receipt = platon.waitForTransactionReceipt(tx_hash)
print(tx_receipt)

topic_param = greeter.events.setUint32Evt().processReceipt(tx_receipt)

print(topic_param)


topic_param是事件setUint32Evt调用的结果

成功运行后输出结果如下：

```python
(AttributeDict({'args': AttributeDict({'topic1': 'topic1', 'arg1': 'data1', 'arg2': 1000, 'arg3': 1000}), 'event': 'setUint32Evt', 'logIndex': 0, 'transactionIndex': 0, 'transactionHash': HexBytes('0xabac50c6a9d443d9f89065775f0f3d56ddeabd2f2a5e0e1f36d00db703b14d8b'), 'address': 'lax1sgsp74pce2vkgwqjd3rzmt55p70psmq7qvnqwn', 'blockHash': HexBytes('0x78f15fbacbc745dfd5b35b596d28b61ae2987b6ff9050dc39c716f383e505899'), 'blockNumber': 1477774}),)

其中'args'对应的值中：

'topic1'为topic值，'arg1'、'arg2'、'arg3'为事件中定义的三个参数值。

四、Ppos

1.staking

from client_sdk_python import Web3, HTTPProvider
from client_sdk_python.ppos import Ppos
w3 = Web3(HTTPProvider("http://localhost:6789"))
ppos = Ppos(w3)

发起质押

调用方式

ppos.createStaking(benifit_address, node_id, external_id, node_name, website, details, amount,program_version,program_version_sign, bls_pubkey, bls_proof, pri_key, reward_per, typ=2, transaction_cfg=None)

参数说明

typ: Indicates whether the account free amount or the account's lock amount is used for staking, 0: free amount; 1: lock amount;2: Give priority to lock amount , use free amount provided that staking amount over lock amount benifit_address: Income account for accepting block rewards and staking rewards node_id: The idled node Id (also called the candidate's node Id) external_id: External Id (with length limit, Id for the third party to pull the node description) node_name: The name of the staking node (with a length limit indicating the name of the node) website: The third-party home page of the node (with a length limit indicating the home page of the node) details: Description of the node (with a length limit indicating the description of the node) amount: staking von (unit:von, 1LAT = 10**18 von) program_version: The real version of the program, admin_getProgramVersion program_version_sign: The real version of the program is signed, admin_getProgramVersion bls_pubkey: Bls public key bls_proof: Proof of bls, obtained by pulling the proof interface, admin_getSchnorrNIZKProve pri_key: Private key for transaction reward_per: Proportion of the reward share obtained from the commission, using BasePoint 1BP = 0.01% transaction_cfg: Transaction basic configuration type: dict example:cfg = { "gas":100000000, "gasPrice":2000000000000, "nonce":1, }

修改质押信息

调用方式

ppos.editCandidate(benifit_address, node_id, external_id, node_name, website, details, pri_key, reward_per, transaction_cfg=None)

参数说明

benifit_address: Income account for accepting block rewards and staking rewards node_id: The idled node Id (also called the candidate's node Id) external_id: External Id (with length limit, Id for the third party to pull the node description) node_name: The name of the staking node (with a length limit indicating the name of the node) website: The third-party home page of the node (with a length limit indicating the home page of the node) details: Description of the node (with a length limit indicating the description of the node) pri_key: Private key for transaction reward_per: Proportion of the reward share obtained from the commission, using BasePoint 1BP = 0.01% transaction_cfg: Transaction basic configuration type: dict example:cfg = { "gas":100000000, "gasPrice":2000000000000, "nonce":1, }

增持质押

调用方式

ppos.increaseStaking(node_id, amount, pri_key, typ=2, transaction_cfg=None)

参数说明

typ: Indicates whether the account free amount or the account's lock amount is used for staking, 0: free amount; 1: lock amount;2: Give priority to lock amount , use free amount provided that staking amount over lock amount node_id: The idled node Id (also called the candidate's node Id) amount: staking von (unit:von, 1LAT = 10**18 von) pri_key: Private key for transaction transaction_cfg: Transaction basic configuration type: dict example:cfg = { "gas":100000000, "gasPrice":2000000000000, "nonce":1, }

撤销质押(一次性发起全部撤销，多次到账)

调用方式

ppos.withdrewStaking(node_id, pri_key, transaction_cfg=None)

参数说明

node_id: The idled node Id (also called the candidate's node Id) pri_key: Private key for transaction transaction_cfg: Transaction basic configuration type: dict example:cfg = { "gas":100000000, "gasPrice":2000000000000, "nonce":1, }

2 .delegate

发起委托

调用方式

ppos.delegate(typ, node_id, amount, pri_key, transaction_cfg=None)

参数说明

typ: Indicates whether the account free amount or the account's lock amount is used for delegate, 0: free amount; 1: lock amount node_id: The idled node Id (also called the candidate's node Id) amount: Amount of delegate (unit:von, 1LAT = 10**18 von) pri_key: Private key for transaction transaction_cfg: Transaction basic configuration type: dict example:cfg = { "gas":100000000, "gasPrice":2000000000000, "nonce":1, }

减持/撤销委托

调用方式

ppos.withdrewDelegate(staking_blocknum, node_id, amount, pri_key, transaction_cfg=None)

参数说明

staking_blocknum: A unique indication of a pledge of a node node_id: The idled node Id (also called the candidate's node Id) amount: The amount of the entrusted reduction (unit:von, 1LAT = 10**18 von) pri_key: Private key for transaction transaction_cfg: Transaction basic configuration type: dict example:cfg = { "gas":100000000, "gasPrice":2000000000000, "nonce":1, }

提取委托奖励

调用方式

ppos.withdrawDelegateReward(pri_key, transaction_cfg=None)

参数说明

pri_key: Private key for transaction transaction_cfg: Transaction basic configuration type: dict example:cfg = { "gas":100000000, "gasPrice":2000000000000, "nonce":1, }

3.query

查询当前结算周期的验证人队列

调用方式

ppos.getVerifierList(from_address=None)

参数说明

from_address: Used to call the rpc call method

查询当前共识周期的验证人列表

调用方式

ppos.getValidatorList(from_address=None)

参数说明

from_address: Used to call the rpc call method

查询所有实时的候选人列表

调用方式

ppos.getCandidateList(from_address=None)

参数说明

from_address: Used to call the rpc call method

查询当前账户地址所委托的节点的NodeID和质押Id

调用方式

ppos.getRelatedListByDelAddr(del_addr, from_address=None)

参数说明

del_addr: Client's account address from_address: Used to call the rpc call method

查询当前单个节点的委托信息

调用方式

ppos.getDelegateInfo(staking_blocknum, del_address, node_id, from_address=None)

参数说明

staking_blocknum: Block height at the time of staking del_address: Client's account address node_id: Verifier's node ID from_address: Used to call the rpc call method

查询当前节点的质押信息

调用方式

ppos.getCandidateInfo(node_id, from_address=None)

参数说明

node_id: Verifier's node ID from_address: Used to call the rpc call method

查询当前结算周期的区块奖励

调用方式

ppos.getPackageReward(from_address=None)

参数说明

from_address: Used to call the rpc call method

查询当前结算周期的质押奖励

调用方式

ppos.getStakingReward(from_address=None)

参数说明

from_address: Used to call the rpc call method

查询打包区块的平均时间

调用方式

ppos.getAvgPackTime(from_address=None)

参数说明

from_address: Used to call the rpc call method

查询账户在各节点未提取委托奖励。

调用方式

ppos.getDelegateReward(address, node_ids=[])

参数说明

address:account address to be queried

node_ids:the string array of the node id to be queried, if it is empty, query all nodes delegated by the account

4.双签

举报双签

调用方式

ppos.reportDuplicateSign(typ, data, pri_key, transaction_cfg=None)

参数说明

typ: Represents duplicate sign type, 1:prepareBlock, 2: prepareVote, 3:viewChange data: Json value of single evidence, format reference RPC interface Evidences pri_key: Private key for transaction transaction_cfg: Transaction basic configuration type: dict example:cfg = { "gas":100000000, "gasPrice":2000000000000, "nonce":1, }

查询节点是否已被举报过多签

调用方式

ppos.checkDuplicateSign(typ, node_id, block_number, from_address=None)

参数说明

typ: Represents double sign type, 1:prepareBlock, 2: prepareVote, 3:viewChange check_address: Reported node address block_number: Duplicate-signed block height from_address: Used to call the rpc call method

5.锁仓

创建锁仓计划

调用方式

ppos.createRestrictingPlan(account, plan, pri_key, transaction_cfg=None)

参数说明

account: Locked account release account plan: An is a list of RestrictingPlan types (array), and RestrictingPlan is defined as follows: type RestrictingPlan struct { Epoch uint64 Amount *big.Int } where Epoch: represents a multiple of the billing period. The product of the number of blocks per billing cycle indicates that the locked fund s are released at the target block height. Epoch * The number of blocks per cycle is at least greater than the maximum irreversible block height. Amount: indicates the amount to be released on the target block. pri_key: Private key for transaction transaction_cfg: Transaction basic configuration type: dict example:cfg = { "gas":100000000, "gasPrice":2000000000000, "nonce":1, }

获取锁仓信息

调用方式

ppos.getRestrictingInfo(account, from_address=None)

参数说明

account: Locked account release account from_address: Used to call the rpc call method

6.治理

from client_sdk_python import Web3, HTTPProvider
from client_sdk_python.pip import Pip
w3 = Web3(HTTPProvider("http://localhost:6789"))
pip = Pip(w3)

文本提案

调用方式

pip.submitText(verifier, pip_id, pri_key, transaction_cfg=None)

参数说明

verifier: The certified submitting the proposal pip_id: PIPID pri_key: Private key for transaction transaction_cfg: Transaction basic configuration type: dict example:cfg = { "gas":100000000, "gasPrice":2000000000000, "nonce":1, }

升级提案

调用方式

pip.submitVersion(verifier, pip_id, new_version, end_voting_rounds, pri_key, transaction_cfg=None)

参数说明

verifier: The certified submitting the proposal pip_id: PIPID new_version: upgraded version end_voting_rounds: The number of voting consensus rounds. Explanation: Assume that the transaction submitted by the proposal is rounded when the consensus round number of the package is packed into the block, then the proposal voting block is high, which is the 230th block height of the round of the round1 + endVotingRounds (assuming a consensus round out of block 250, ppos The list is 20 blocks high in advance, 250, 20 are configurable), where 0 < endVotingRounds <= 4840 (about 2 weeks, the actual discussion can be calculated according to the configuration), and is an integer) pri_key: Private key for transaction transaction_cfg: Transaction basic configuration type: dict example:cfg = { "gas":100000000, "gasPrice":2000000000000, "nonce":1, }

参数提案

调用方式

pip.submitParam(verifier, pip_id, module, name, new_value, pri_key, transaction_cfg=None)

参数说明

verifier: The certified submitting the proposal pip_id: PIPID module: parameter module name: parameter name new_value: New parameter value pri_key: Private key for transaction transaction_cfg: Transaction basic configuration type: dict example:cfg = { "gas":100000000, "gasPrice":2000000000000, "nonce":1, }

删除提案

调用方式

pip.submitCancel(verifier, pip_id, end_voting_rounds, tobe_canceled_proposal_id, pri_key, transaction_cfg=None)

参数说明

verifier: The certified submitting the proposal pip_id: PIPID end_voting_rounds: The number of voting consensus rounds. Refer to the instructions for submitting the upgrade proposal. At the same time, the value of this parameter in this interface cannot be greater than the value in the corresponding upgrade proposal. tobe_canceled_proposal_id: Upgrade proposal ID to be cancelled pri_key: Private key for transaction transaction_cfg: Transaction basic configuration type: dict example:cfg = { "gas":100000000, "gasPrice":2000000000000, "nonce":1, }

投票

调用方式

pip.vote(verifier, proposal_id, option, program_version, version_sign, pri_key, transaction_cfg=None)

参数说明

verifier: The certified submitting the proposal proposal_id: Proposal ID option: Voting option program_version: Node code version, obtained by rpc getProgramVersion interface version_sign: Code version signature, obtained by rpc getProgramVersion interface pri_key: Private key for transaction transaction_cfg: Transaction basic configuration type: dict example:cfg = { "gas":100000000, "gasPrice":2000000000000, "nonce":1, }

版本声明

调用方式

pip.declareVersion(active_node, program_version, version_sign, pri_key, transaction_cfg=None)

参数说明

active_node: The declared node can only be a verifier/candidate program_version: The declared version, obtained by rpc's getProgramVersion interface version_sign: The signed version signature, obtained by rpc's getProgramVersion interface pri_key: Private key for transaction transaction_cfg: Transaction basic configuration type: dict example:cfg = { "gas":100000000, "gasPrice":2000000000000, "nonce":1, }

查询提案

调用方式

pip.getProposal(proposal_id, from_address=None)

参数说明

proposal_id: proposal id from_address: Used to call the rpc call method

查询提案结果

调用方式

pip.getTallyResult(proposal_id, from_address=None)

参数说明

proposal_id: proposal id from_address: Used to call the rpc call method

查询提案的累积可投票人数

调用方式

pip.getAccuVerifiersCount(proposal_id, block_hash, from_address=None)

参数说明

proposal_id: proposal id block_hash: block hash from_address: Used to call the rpc call method

查询提案列表

调用方式

pip.listProposal(from_address=None)

参数说明

from_address: Used to call the rpc call method

查询节点的链生效版本

调用方式

pip.getActiveVersion(from_address=None)

参数说明

from_address: Used to call the rpc call method

查询当前块高的治理参数值

调用方式

pip.getGovernParamValue(module, name, from_address=None)

参数说明

module: Parameter module name: parameter name from_address:Used to call the rpc call method

查询治理参数列表

调用方式

pip.listGovernParam(self, module=None, from_address=None)

参数说明

module:Parameter module from_address: Used to call the rpc call method

License

AlayaNetwork/client-sdk-python

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client-sdk-python

说明

快速入门

一、安装

1 Python环境要求

2 可使用pip直接安装：

二、使用

1 Web3模式

2 节点连接

3 基本api

基础类型编和解码

地址检测

加密哈希

4 链上查询api

(1) platon.blockNumber

(2) platon.syncing

(3) platon.gasPrice

(4) platon.accounts

(5) platon.evidences

(6) platon.consensusStatus

(7) platon.getBalance(address)

(8) platon.getStorageAt()

(9) platon.getCode

(10) platon.getBlock()

(11) platon.getBlockTransactionCount()

(12) platon.getTransaction()

(13) platon.getRawTransaction()

(14) platon.getTransactionFromBlock()

(15) platon.getTransactionByBlock()

5 链上发送交易api：

(1) sendTransaction(transactionObject)

(2) waitForTransactionReceipt(transaction_hash, timeout)

(3) platon.getTransactionReceipt()

(4) platon.getTransactionCount()

（6）platon.sendRawTransaction()

(8) platon.generateGasPrice()

(9) platon.setGasPriceStrategy()

(10) platon.modifyTransaction()

(11) platon.sign()

(12) platon.estimateGas()

6 其他 api

(1) platon.filter

(2) platon.getFilterChanges()

(3) platon.getFilterLogs()

(4) platon.uninstallFilter()

(5) platon.getLogs()

(6) functions()

(7) call()

(8) events

7.获取hrp

三、合约

1 、合约介绍

2、 合约编译

3、SDK 对evm合约的调用

(1) 使用platon-truffle在本机对evm合约进行编译

(2) 通过python SDK对Helloworld合约部署

(3) 对Helloworld合约进行调用(交易发送)

4、SDK 对wasm合约的调用：

(1) 使用PlatON-CDT在本机对wasm合约进行编译

(2) 通过python SDK对Helloworld合约(wasm类型)部署

(3) 对Helloworld合约进行交易发送(wasm合约)

(4) wasm合约的事件调用

四、Ppos

1.staking

发起质押

修改质押信息

增持质押

撤销质押(一次性发起全部撤销，多次到账)

2 .delegate

发起委托

减持/撤销委托

提取委托奖励

3.query

查询当前结算周期的验证人队列

2、合约编译

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