Python CTYPE找不到DLL？

Question

Python ctype can't find AntTweakBar.dll ?? and the file dosn't exist for python OS file system call, but exists in the c:\\Windows\\System32 dir.

C:\Users\dkm>dir c:\Windows\System32\ant*dll
 Volume in drive C is Windows 7
 Volume Serial Number is FC61-5FBB

 Directory of c:\Windows\System32

23/07/2012  12:05 AM           641,536 AntTweakBar.dll
22/07/2012  11:43 PM           774,144 AntTweakBar64.dll
               2 File(s)      1,415,680 bytes
               0 Dir(s)  47,418,232,832 bytes free

C:\Users\dkm>python
Python 2.7 (r27:82525, Jul  4 2010, 09:01:59) [MSC v.1500 32 bit (Intel)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> from ctypes.util import find_library
>>> import os
>>> print os.path.exists('C:\\Windows\\System32\\antweakbar.dll')
False
>>> find_library("AntTweakBar")
>>>

why can't ctype find the dll?

Answer 1

there are 2 t's in the file name

antweakbar.dll - name given by you

AntTweakBar.dll - actual file name

C:\\\\Windows\\\\System32\\\\antweakbar.dll should be C:\\\\Windows\\\\System32\\\\anttweakbar.dll

for example (checking with inetcfg.dll, as i don't have anttweakbar.dll), see below for Python 2.7.2

In [136]: import os

In [137]: os.path.exists("C:\\Windows\\System32\\inetcfg.dll")
Out[137]: True