feat: ipython

Author: ramwin

README.md

@@ -665,17 +665,7 @@ $ faker password
 
 ## [GitPython](./other_useful_library/README.md#git)
 
-## [hexbytes](https://hexbytes.readthedocs.io/en/stable/)
-处理字符串和十六进制
-```python
-from hexbytes import HexBytes
-HexBytes(b"123")  // HexBytes("0x313233")
-HexBytes(b"123").hex()  // "0x0123"
-
-HexBytes("123")  // HexBytes("0x0123")
-HexBytes("123").hex()  // "0x313233"
-
-```
+## [hexbytes](./other_useful_library/README.md#hexbytes)
 
 ## [Humanfriendly](./other_useful_library/README.md)
 转化尺寸

other_useful_library/README.md

@@ -1,3 +1,10 @@
+## bitstring
+转化二进制数据
+```
+BitArray(HexBytes("0x7f")).int  // 127   01111111
+BitArray(HexBytes("0x80")).int  // -128  10000000
+```
+
 ## [diff-match-patch](https://github.com/google/diff-match-patch)
 用来比较文字的不同
 * 用法
@@ -102,6 +109,20 @@ Humanfriendly.parse_size("10M")  // 10_000_000
 Humanfriendly.parse_size("10M", binary=True)  // 1024 x 1024 x 10
 ```
 
+## [hexbytes](https://hexbytes.readthedocs.io/en/stable/)
+处理字符串和十六进制
+```python
+from hexbytes import HexBytes
+HexBytes(b"123")  // HexBytes("0x313233")
+HexBytes(b"123").hex()  // "0x0123"
+
+HexBytes("123")  // HexBytes("0x0123")
+HexBytes("123").hex()  // "0x313233"
+```
+* len  2个hex为1个长度
+* slice `HexBytes("0xffff")[0:1] == HexBytes("0xff")`
+* getitem `HexBytes("0xffff")[0] == 255`
+
 ## [imapclient](imapclient.md)
 很好用的邮件客户端
 

startup/00-base.py

@@ -0,0 +1,11 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+# Xiang Wang <ramwin@qq.com>
+
+
+import datetime
+import logging
+import os
+import time
+
+from pathlib import Path

startup/10-third.py

@@ -0,0 +1,7 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+# Xiang Wang <ramwin@qq.com>
+
+
+import redis
+from redis import Redis

startup/README

@@ -0,0 +1,11 @@
+This is the IPython startup directory
+
+.py and .ipy files in this directory will be run *prior* to any code or files specified
+via the exec_lines or exec_files configurables whenever you load this profile.
+
+Files will be run in lexicographical order, so you can control the execution order of files
+with a prefix, e.g.::
+
+    00-first.py
+    50-middle.py
+    99-last.ipy