python-magic WindowsError: access violation writing 0x00000000

Question

我使用 pip 在我的 Win 7 64 位上安装了 python-magic (0.4.6)。然后我安装了 cygwin 1.7.33-2 以提供所需的 dll 并创建了一个名为 magic1.dll 的 cygmagic-1.dll 副本（参见

当我运行 Python 2.7.6 32 位 shell 时，"import magic" 工作正常。

然而，

magic.from_file('c:\user\username\sample.txt')

给我一个

Traceback (most recent call last):  
  File "<stdin>", line 1, in <module>  
  File "c:\Python27\lib\site-packages\magic.py", line 119, in from_file    
    m = _get_magic_type(mime)  
  File "c:\Python27\lib\site-packages\magic.py", line 107, in _get_magic_type  
    i = instances.__dict__[mime] = Magic(mime=mime)  
  File "c:\Python27\lib\site-packages\magic.py", line 55, in __init__
    self.cookie = magic_open(flags)  

WindowsError: exception: access violation writing 0x00000000

知道导致此错误的原因以及如何修复它吗？感谢您的帮助！

Answer 1

GnuWin32 file package 有一个 32 位 magic1.dll，以及它的依赖项 regex2.dll 和 zlib1.dll。我从测试中知道这个版本适用于 python-magic。下面是我在 32 位 Python 3.3.

中测试它所采取的步骤的概述

将文件解压到 GnuWin32 的安装目录：

C:\Temp>set "GNU=C:\Program Files (x86)\GNU"
C:\Temp>7z x -y -o"%GNU%" file-5.03-bin.zip > nul
C:\Temp>7z x -y -o"%GNU%" file-5.03-dep.zip > nul

设置环境以查找 DLL 和魔术文件：

C:\Temp>set PATH=%PATH%;%GNU%\bin
C:\Temp>set MAGIC=%GNU%\share\misc\magic

安装python-magic:

C:\Temp>py -3.3-32 -m pip install python-magic  
Collecting python-magic
  Downloading python-magic-0.4.6.tar.gz
Installing collected packages: python-magic
  Running setup.py install for python-magic
Successfully installed python-magic-0.4.6

验证它是否有效：

C:\Temp>py -3.3-32                            
Python 3.3.5 (v3.3.5:62cf4e77f785, Mar  9 2014, 10:37:12) 
[MSC v.1600 32 bit (Intel)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import sys, magic
>>> magic.from_file(sys.executable)
b'PE32 executable for MS Windows (console) Intel 80386 32-bit'

python-magic WindowsError: access violation writing 0x00000000

python-magic WindowsError: access violation writing 0x00000000

python-2.7

cygwin

ctypes

python-magic