PyQt4的Python导入失败

Question

我正在尝试使用“ imp”库导出PyQt4的所有符号。 使用内置的“ import PyQt4.QtCore”可以，但是python的代码失败。 我的测试基于Mac。 在Windows上，似乎如果在QtCore目录下放置一个“ init .py”（空文件可以），则“ import QtCore”将成功。 但是在Mac上，由于某种未知的原因，它失败了。 在Cli中：

bash-3.2# python
Python 2.7.5 (default, Mar  9 2014, 22:15:05)
[GCC 4.2.1 Compatible Apple LLVM 5.0 (clang-500.0.68)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import PyQt4.QtCore as f
>>> print f.__file__
/Library/Python/2.7/site-packages/PyQt4/QtCore.so

但是，此用法失败。

bash-3.2# cd /Library/Python/2.7/site-packages/PyQt4/
bash-3.2# python
Python 2.7.5 (default, Mar  9 2014, 22:15:05)
[GCC 4.2.1 Compatible Apple LLVM 5.0 (clang-500.0.68)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import QtCore
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
SystemError: dynamic module not initialized properly

有人可以解释吗？

Answer 1

QtCore无法直接导入python。 QtCore存在于PyQt4库中。 要访问QtCore类，您需要执行以下操作：

Python 2.7.8 (default, Jun 30 2014, 16:03:49) [MSC v.1500 32 bit (Intel)] on win32
Type "copyright", "credits" or "license()" for more information.
>>> from PyQt4 import QtCore
>>> 

The __init__.py files are required to make Python treat the directories as containing packages; this is done to prevent directories with a common name, such as string, from unintentionally hiding valid modules that occur later on the module search path. In the simplest case, __init__.py can just be an empty file, but it can also execute initialization code for the package or set the __all__ variable, described later.