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我在这里读过一些问题，人们和我有同样的情况，但无论我尝试什么方法，它都行不通！

根据 MySQL 文档，MySQL-connector-python-2.xxx 应该适用于 Python 3+。我已经下载了 RPM 包并将其安装在我的 virtualenv 中。但是，在导入库时，我收到错误消息“没有名为 MySQL 的模块”。

检查我是否已安装该软件包：

(virtual)[centos ~]$ rpm -ql mysql-connector-python-2.1.3-1.el6.x86_64.rpm
package mysql-connector-python-2.1.3-1.el6.x86_64.rpm is not installed

尝试安装软件包：

(virtual)[centos ~]$ sudo rpm -i ~/Documents/python/mysql-connector-python-2.1.3-1.el6.x86_64.rpm 
[sudo] password for <username>: 
warning: /home/<username>/Documents/python/mysql-connector-python-2.1.3-1.el6.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY
    package mysql-connector-python-2.1.3-1.el6.x86_64 is already installed

这适用于 Python2.6：

[centos ~]$ python
Python 2.6.6 (r266:84292, Jul 23 2015, 15:22:56) 
[GCC 4.4.7 20120313 (Red Hat 4.4.7-11)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import MySQLdb
>>> import mysql.connector
>>>

不在 Python3.5 上：

[centos ~]$ python3.5
Python 3.5.1 (default, Jan 13 2016, 17:43:34) 
[GCC 4.4.7 20120313 (Red Hat 4.4.7-11)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import mysql.connector
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ImportError: No module named 'mysql'
>>>

通过 MySQL 文档验证包：

(virtual)[centos]$ python
Python 3.5.1 (default, Jan 13 2016, 17:43:34) 
[GCC 4.4.7 20120313 (Red Hat 4.4.7-11)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> 
>>> from distutils.sysconfig import get_python_lib
>>> print (get_python_lib ())
/home/<username>/Documents/redhat-server/python_project/virtual/lib/python3.5/site-packages
>>> 
>>> import mysql.connector
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ImportError: No module named 'mysql'
>>>

确保 python3.5 与 MySQL.connector 位于同一目录中

(virtual)[centos]$ which python3.5
~/Documents/redhat-server/python_project/virtual/bin/python3.5

更新：

(virtual)[centos]$ pip install mysql-connector-python
Collecting mysql-connector-python
  Could not find a version that satisfies the requirement mysql-connector-python (from versions: )
No matching distribution found for mysql-connector-python
(virtual)[centos]$

我究竟做错了什么？

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1 回答 1

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我已经想通了。Anzel 正确地认为它已全局安装在默认的 python2.6 目录中。这是我修复它的方法：

启动默认的 python 解释器，在我的例子中是“python”-> python2.6，然后运行下面的命令来查看“MySQL.connector”的安装位置。

>>> from distutils.sysconfig import get_python_lib
>>> print get_python_lib ()
/usr/lib/python2.6/site-packages
>>>

导航到上述目录，“/usr/lib/python2.6/site-packages/”显示一个名为 MySQL 的目录和一个名为 MySQL_connector_python-2.1.3-py2.6.egg-info 的文件。

启动 python3.5 解释器将我带到不同的路径，我检查了它，果然，两个 MySQL 和 MySQL_connector_python-2.1.3-py2.6.egg-info 文件/目录不存在。

>>> from distutils.sysconfig import get_python_lib
>>> print (get_python_lib ())
/home/<username>/Documents/redhat-server/python_project/virtual/lib/python3.5/site-packages
>>>

接下来，我将这两个文件复制到 Python3.5 站点包目录，测试了导入、数据库连接，它成功了！

Python 3.5.1 (default, Jan 13 2016, 17:43:34) 
[GCC 4.4.7 20120313 (Red Hat 4.4.7-11)] on linux
Type "copyright", "credits" or "license()" for more information.
>>> 
>>> import mysql.connector
>>> 
>>> cnx = mysql.connector.connect (user = 'username', password = 'password', host = 'localhost',
               database = 'testdb')
>>> cnx
<mysql.connector.connection.MySQLConnection object at 0x7ffa4c1009b0>
于 2016-05-05T22:53:25.720 回答