feat: Added generation with mnemonic

eth_account/account.py

@@ -49,6 +49,7 @@
 from eth_account.hdaccount import (
     derive_ethereum_key,
     seed_from_mnemonic,
+    mnemonic_from_entropy,
 )
 from eth_account.messages import (
     SignableMessage,
@@ -240,6 +241,13 @@ def from_mnemonic(self, mnemonic, passphrase="", account_index=0):
         key = self._parsePrivateKey(private_key)
         return LocalAccount(key, self)
 
+    @combomethod
+    def create_with_mnemonic(self, extra_entropy="", passphrase="", account_index=0):
+        extra_entropy_bytes = text_if_str(to_bytes, extra_entropy)
+        entropy = keccak(os.urandom(32) + extra_entropy_bytes)
+        mnemonic = mnemonic_from_entropy(entropy)
+        return self.from_mnemonic(mnemonic, passphrase, account_index), mnemonic
+
     @combomethod
     def recover_message(self, signable_message: SignableMessage, vrs=None, signature=None):
         r"""

eth_account/hdaccount/__init__.py

@@ -15,3 +15,7 @@ def seed_from_mnemonic(words: str, passphrase="") -> bytes:
     if not Mnemonic(lang).check(words):
         raise ValueError("Provided words are not a valid BIP39 mnemonic phrase!")
     return Mnemonic.to_seed(words, passphrase)
+
+
+def mnemonic_from_entropy(entropy: bytes, lang="english") -> str:
+    return Mnemonic(lang).to_mnemonic(entropy)

tests/core/test_hdaccount.py

@@ -10,3 +10,9 @@ def test_account_derivation():
     a2 = Account.from_mnemonic(words, account_index=1)
     assert a1.address == "0x1c96099350f13D558464eC79B9bE4445AA0eF579"
     assert a2.address == "0x1b00AeD43a693F3a957F9FeB5cC08AFA031E37a0"
+
+
+def test_account_restore():
+    a1, mnemonic = Account.create_with_mnemonic(extra_entropy="Some extra stuff.")
+    a2 = Account.from_mnemonic(mnemonic)
+    assert a1.address == a2.address