如何在python中解压缩非常大的文件？

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()