compress level of python gzip module not working
Question: I was trying to write data into a compressed file using the python gzip
module. But the module does not seem to accept the level of compression

I followed the syntax specified in the official Python documentation on
[gzip](http://docs.python.org/2/library/gzip.html)

Here is a sample snippet of code, please correct me if I am wrong

    
    
    import gzip
    fd = gzip.GzipFile(filename = "temp", mode = "w", compresslevel = 6)
    fd.write("some text")
    

When I run the file command on the file temp I always get the output as "max
compression" even though it is not in this case

    
    
    file temp 
    temp: gzip compressed data, was "temp", last modified: Tue Jul 30 23:12:29 2013, max compression
    


Answer: `some text` is too small to test. Try with big string.

I tried it with a big text file, and it works as expected.

    
    
    import gzip
    import os
    
    with open('/path/to/big-file', 'rb') as f:
        content = f.read()
    
    for level in range(10):
        with gzip.GzipFile(filename='temp', mode='w', compresslevel=level) as f:
            f.write(content)
        print('level={}, size={}'.format(level, os.path.getsize('temp')))
    

Above code produce following output:

    
    
    level=0, size=56564
    level=1, size=21150
    level=2, size=20635
    level=3, size=20291
    level=4, size=19260
    level=5, size=18818
    level=6, size=18721
    level=7, size=18713
    level=8, size=18700
    level=9, size=18702
    

