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(Python) Deflate File

Demonstrates how to use the Deflate compression algorithm to compress a file. (The deflate compression algorithm is the most commonly used in the Zip archive file format.)

This code is capable of compressing any size file because the file data is compressed from input to output in a streaming mode. The output file contains only the deflated data (it is not a .zip, and there is no file structure or format).

 Chilkat Python Module Downloads for Windows, Linux, and MAC OS X

import sys
import chilkat

compress = chilkat.CkCompression()

#  Any string argument automatically begins a 30-day trial.
success = compress.UnlockComponent("30-day trial")
if (success != True):
    print compress.lastErrorText()
    sys.exit()

compress.put_Algorithm("deflate")

#  Deflate this XML file:
success = compress.CompressFile("hamlet.xml","hamletDeflate.dat")
if (success != True):
    print compress.lastErrorText()
    sys.exit()

#  Inflate back to the original:
success = compress.DecompressFile("hamletDeflate.dat","hamletInflated.xml")
if (success != True):
    print compress.lastErrorText()
    sys.exit()

print "Success!"
 

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