Zlib

# import zlib and decompress
import zlib
  
  
s = b'This is GFG author, and final year student.'
   
# using zlib.compress(s) method
t = zlib.compress(s)
print("Compressed String")
print(t)
  
print("\nDecompressed String")
print(zlib.decompress(t))

import zlib
import binascii

data = 'Hello world'

compressed_data2 = zlib.compress(data, 2)
compressed_data0 = zlib.compress(data, 0)

print('Original data: ' +  data)
print('Compressed data: ' + binascii.hexlify(compressed_data2))
print('Compressed data: ' + binascii.hexlify(compressed_data0))

import zlib
import binascii

data = 'Hello world'

compress = zlib.compressobj(zlib.Z_DEFAULT_COMPRESSION, zlib.DEFLATED, -15)
compressed_data = compress.compress(data)
compressed_data += compress.flush()

print('Original: ' + data)
print('Compressed data: ' + binascii.hexlify(compressed_data))

import zlib

original_data = open('logo.png', 'rb').read()
compressed_data = zlib.compress(original_data, zlib.Z_BEST_COMPRESSION)

compress_ratio = (float(len(original_data)) - float(len(compressed_data))) / float(len(original_data))

print('Compressed: %d%%' % (100.0 * compress_ratio))

import zlib

my_data = 'Hello world'

compressed_data = zlib.compress(my_data, 2)

f = open('outfile.txt', 'w')
f.write(compressed_data)
f.close()

import zlib

data = 'Hello world'

compressed_data = zlib.compress(data, 2)
decompressed_data = zlib.decompress(compressed_data)

print('Decompressed data: ' + decompressed_data)

import zlib

data = 'Hello world'

compress = zlib.compressobj(zlib.Z_DEFAULT_COMPRESSION, zlib.DEFLATED, +15)
compressed_data = compress.compress(data)
compressed_data += compress.flush()

print('Original: ' + data)
print('Compressed data: ' + compressed_data)

f = open('compressed.dat', 'w')
f.write(compressed_data)
f.close()

CHUNKSIZE = 1024

data2 = zlib.decompressobj()
my_file = open('compressed.dat', 'rb')            
buf = my_file.read(CHUNKSIZE)

# Decompress stream chunks
while buf:
    decompressed_data = data2.decompress(buf)
    buf = my_file.read(CHUNKSIZE)

decompressed_data += data2.flush()

print('Decompressed data: ' + decompressed_data)

my_file.close()

import zlib

compressed_data = open('compressed.dat', 'rb').read()
decompressed_data = zlib.decompress(compressed_data)
print(decompressed_data)

Wetofu

Zlib