python - mysql AttributeError 'module' 对象没有属性 'unpack_from'

Question

我使用mysql.connector连接到mysql，这是我的Python语句:

conn = mysql.connector.connect(user = 'root', password = 'password', database = 'test', use_unicode = True)`

但出现错误，日志如下:

Traceback (most recent call last):
  File "PythonConnectToMySQL.py", line 6, in <module>
    conn = mysql.connector.connect(user = 'root', password = 'hankenqqqq', database = 'test', use_unicode = True)
  File "/usr/local/lib/python2.7/dist-packages/mysql/connector/__init__.py", line 162, in connect
    return MySQLConnection(*args, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/mysql/connector/connection.py", line 129, in __init__
    self.connect(**kwargs)
  File "/usr/local/lib/python2.7/dist-packages/mysql/connector/connection.py", line 454, in connect
    self._open_connection()
  File "/usr/local/lib/python2.7/dist-packages/mysql/connector/connection.py", line 418, in _open_connection
    self._do_handshake()
  File "/usr/local/lib/python2.7/dist-packages/mysql/connector/connection.py", line 141, in _do_handshake
    packet = self._socket.recv()
  File "/usr/local/lib/python2.7/dist-packages/mysql/connector/network.py", line 235, in recv_plain
    payload_len = struct.unpack_from(
AttributeError: 'module' object has no attribute 'unpack_from'`

这是我的代码:

#!/usr/bin/env python2.7
#-*-coding:utf8-*-

import mysql.connector

conn = mysql.connector.connect(user = 'root', password = 'password', database = 'test', use_unicode = True)

cursor = conn.cursor()    
cursor.execute('create table user (id varchar(20) primary key, name varchar(20))')

cursor.execute('insert into user(id, name) values (%s, %s)', ['1', 'Mary'])
print cursor.rowcount

conn.commit()
cursor.close()

cursor = conn.cursor()
cursor.execute('select * from user where id = %s', '1')

values = cursor.fetchall()
print values

cursor.close()
conn.close()

我已经在mysql中创建了数据库test谢谢

Answer 1

您使用的是哪个 Python 版本？

struct 是一个内置库，unpack_from 方法包含在 Python 2.5 版本中。

如果您使用旧版本的 Python，请考虑升级到版本 2.7 或 3.X。

如果您无法迁移到较新的版本，您可以尝试使用旧版本的连接器(版本 1.0 与 Python 2.4 兼容)。您可以下载旧版本here