我在使用Python内置库gzip
时遇到了一些问题。我已经查看了几乎所有关于它的堆栈问题,但似乎没有一个能解决我的问题。
我的问题在于当我尝试解压缩时,我会得到IOError
错误。
我收到的错误信息是:
Traceback (most recent call last):
File "mymodule.py", line 61, in
return gz.read()
File "/usr/lib/python2.7/gzip.py", line 245,
readself._read(readsize)
File "/usr/lib/python2.7/gzip.py", line 287, in
_readself._read_gzip_header()
File "/usr/lib/python2.7/gzip.py", line 181, in
_read_gzip_header
raise IOError, 'Not a gzipped file'IOError: Not a gzipped file
这是我的代码,用于在网络上传输。可能不太容易理解我为什么这样做,但通常它会在一个while循环中运行且占用内存较少。我只是简化了它。
buffer = cStringIO.StringIO(output) #output is from a subprocess call
small_buffer = cStringIO.StringIO()
small_string = buffer.read() #need a string to write to buffer
gzip_obj = gzip.GzipFile(fileobj=small_buffer,compresslevel=6, mode='wb')
gzip_obj.write(small_string)
compressed_str = small_buffer.getvalue()
blowfish = Blowfish.new('abcd', Blowfish.MODE_ECB)
remainder = '|'*(8 - (len(compressed_str) % 8))
compressed_str += remainder
encrypted = blowfish.encrypt(compressed_str)
#i send it over smb, then retrieve it later
那么这是检索它的代码:
#buffer is a cStringIO object filled with data from retrieval
decrypter = Blowfish.new('abcd', Blowfish.MODE_ECB)
value = buffer.getvalue()
decrypted = decrypter.decrypt(value)
buff = cStringIO.StringIO(decrypted)
buff.seek(0)
gz = gzip.GzipFile(fileobj=buff)
return gz.read()
Here's the problem
return gz.read()