Fixing the error: zipfile badzipfile file is not a zip file

Question

I get an error: "BadZipfile: File is not a zip file" When I'm using Python 2.5 and i open zip files with Python's zipfile module [ zipfile.ZipFile("filex.zip") ]

Here are the error details:

Traceback (most recent call last):
 File "<module1>", line 5, in <module>
  zipfile.ZipFile("c:/temp/test.zip")
 File "C:\Python25\lib\zipfile.py", line 346, in init
  self._GetContents()
 File "C:\Python25\lib\zipfile.py", line 366, in _GetContents
  self._RealGetContents()
 File "C:\Python25\lib\zipfile.py", line 378, in _RealGetContents
  raise BadZipfile, "File is not a zip file"
 BadZipfile: File is not a zip file

END_BLOCK: 4096,
  comment: '\x00',
  data: '\xd6\xf6\x03\x00\x88,N8?<e\xf0q\xa8\x1cwK\x87\x0c(\x82a\xee\xc61N'1qN\x0b\x16K-\x9d\xd57w\x0f\xa31n\xf3dN\x9e\xb1s\xffu\xd1\.....', (truncated)
  endrec: ['PK\x05\x06', 0, 0, 4, 4, 268, 199515, 0],
  filesize: 199806L,
  fpin: <open file 'c:/temp/test.zip', mode 'rb' at 0x045D4F98>,
  start: 4073

How to fix the zipfile badzipfile file is not a zip file. Please give me some good ideas.

hdtutoria · Accepted Answer

The cause: The cause of this error is that Python can be confused with files named file. Solution: You can fix this error by renaming these files. If that doesn't work, try the following code:

def fixBadZipfile(zipFile):
 f = open(zipFile, 'r+b')
 data = f.read()
 pos = data.find('\x50\x4b\x05\x06') # End of central directory signature
 if (pos > 0):
     self._log("Trancating file at location " + str(pos + 22)+ ".")
     f.seek(pos + 22) # size of 'ZIP end of central directory record'
     f.truncate()
     f.close()
else:
     # raise error, file is truncated

Jim · Answer

Gzip, renaming, tracing, and 7zip expressions are the most basic ways to overcome the problem (Zipfile.badzipfile: file is not a zip) in Python. In fact, these two options necessitate the installation of new modules.

Ambre Girard · Answer

Files named file can cause confusion in python. Try naming it another name. If it STILL doesn't work, you can try this code.

def fixBadZipfile(zipFile): 
 f = open(zipFile, 'r+b') 
 data = f.read() 
 pos = data.find('\x50\x4b\x05\x06') # End of central directory signature 
 if (pos > 0): 
 self._log("Trancating file at location " + str(pos + 22)+ ".") 
 f.seek(pos + 22) # size of 'ZIP end of central directory record' 
 f.truncate() 
 f.close() 
 else: 
 # raise error, file is truncated

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Fixing the error: zipfile badzipfile file is not a zip file