Loop through header information in a ZIP file，loopheader,import struc

Loop through header information in a ZIP file，loopheader,import struc

import structdata = open('myfile.zip', 'rb').read()start = 0for i in range(3):                      # show the first 3 file headers    start += 14    fields = struct.unpack('LLLHH', data[start:start+16])    crc32, comp_size, uncomp_size, filenamesize, extra_size = fields    start += 16    filename = data[start:start+filenamesize]    start += filenamesize    extra = data[start:start+extra_size]    print filename, hex(crc32), comp_size, uncomp_size    start += extra_size + comp_size     # skip to the next header