Python psyco 模块，profile() 实例源码

def main(argv):
    parser = _create_option_parser()
    (options, args) = parser.parse_args(argv)

    if args:
        parser.print_help()
        sys.exit(1)

    # Avoid psyco in debugging mode, since it merges stack frames.
    if not options.debug:
        try:
            import psyco
            psyco.profile()
        except:
            pass

    check_alignments()
    return

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