Question

我终于全力投入Python，但出于某种原因，我遇到了一个问题，即Python可以在交互式CLI中找到一个模块，然后在我编写脚本时就不能了。该模块特别是位于/Library/Python/2.7/site-packages中的mysql.connector。从交互式CLI会话中可以看出，它很好地导入了mysql.connector。回应sys.path显示'Library / Python / 2.7 / site-packages'

这是一个新的CLI窗口（我在Mac 10.10上）。注意：最初当我登录时，我会弹出我的家庭目录，这当然是正常的。

wilkie:~ wilkie$ which python
/usr/bin/python
wilkie:~ wilkie$ python
Python 2.7.6 (default, Sep  9 2014, 15:04:36) 
[GCC 4.2.1 Compatible Apple LLVM 6.0 (clang-600.0.39)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import sys
>>> import mysql.connector
>>> sys.path
['', '/Library/Python/2.7/site-packages/pip-7.1.0-py2.7.egg', '/Library/Python/2.7/site-packages/cx_Oracle-5.2-py2.7-macosx-10.10-intel.egg', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python27.zip', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-darwin', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac/lib-scriptpackages', '/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-tk', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-old', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-dynload', '/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/PyObjC', '/Library/Python/2.7/site-packages']
>>>

所以我只是改为另一个目录......

cd /Users/wilkie/Projects/dataparse

就像那样......它找不到mysql.connector

wilkie:dataparse wilkie$ python
Python 2.7.6 (default, Sep  9 2014, 15:04:36) 
[GCC 4.2.1 Compatible Apple LLVM 6.0 (clang-600.0.39)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import sys
>>> sys.path
['', '/Library/Python/2.7/site-packages/pip-7.1.0-py2.7.egg', '/Library/Python/2.7/site-packages/cx_Oracle-5.2-py2.7-macosx-10.10-intel.egg', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python27.zip', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-darwin', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac/lib-scriptpackages', '/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-tk', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-old', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-dynload', '/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/PyObjC', '/Library/Python/2.7/site-packages']
>>> import mysql.connector
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "mysql.py", line 1, in <module>
    import mysql.connector
ImportError: No module named connector
>>>

我正式难过，不知道为什么会这样。有没有人遇到过这个？

Answer 1

您的主目录或新目录中有mysql个或其他内容。它可能是.py文件，也可能是实际的包（在错误的地方;）。解决这个问题，你的问题应该消失。

Answer 2

在回溯中，我看到您将文件命名为mysql.py。因此，当您尝试从mysql.py导入某些内容时，解释器会在您自己的脚本中查找它，而不是“实际”模块。它不会投射更宽的网，而是立即放弃。要解决此问题，请将脚本重命名为不屏蔽任何模块名称的内容。

Python可以找到一个模块....然后它不能

2 个答案: