ezip-decode.py

import sys, zlib, gzip

def depress(str):
    list_str = list(str)
    list_str[0] = chr(ord(str[0]) ^ ord('E'))
    str = ''.join(list_str)
    z = str[0]
    for x, y in enumerate(str[1:]):
        z += chr(ord(y) ^ ord(z[x]))
    return z

def decompress(str):
    return zlib.decompress(depress(str))

def ez(file):
    with gzip.open(file, 'r') as x, open(file.replace(".EZip", ""), 'w') as y:
        y.write(decompress(x.read()))

def main():
    try:
        if len(sys.argv) == 2:
            ez(sys.argv[1])
        else:
            print """
EEEE ZZZZZ         
E       Z  ii      
EEE    Z      ppp  
E     Z    ii p  p 
EEEE ZZZZZ ii ppp  
              p    
Encrypt and Zip

Usage:
        python EZip.py file"""
    except Exception as error:
        print error

if __name__ == '__main__':
main()