这是对大文件进行解压缩的概述。
import zipfileimport zlibimport ossrc = open( doc, "rb" )zf = zipfile.ZipFile( src )for m in zf.infolist(): # Examine the header print m.filename, m.header_offset, m.compress_size, repr(m.extra), repr(m.comment) src.seek( m.header_offset ) src.read( 30 ) # Good to use struct to unpack this. nm= src.read( len(m.filename) ) if len(m.extra) > 0: ex= src.read( len(m.extra) ) if len(m.comment) > 0: cm= src.read( len(m.comment) ) # Build a decompression object decomp= zlib.decompressobj(-15) # This can be done with a loop reading blocks out= open( m.filename, "wb" ) result= decomp.decompress( src.read( m.compress_size ) ) out.write( result ) result = decomp.flush() out.write( result ) # end of the loop out.close()zf.close()src.close()
