command_line.py 文件源码

def __call__(self, opts):
        import pkg_resources
        yt_provider = pkg_resources.get_provider("yt")
        path = os.path.dirname(yt_provider.module_path)
        vstring = _print_installation_information(path)
        if vstring is not None:
            print("This installation CAN be automatically updated.")
            if opts.update_source:
                update_hg_or_git(path)
        elif opts.update_source:
            _print_failed_source_update()
        if vstring is not None and opts.outputfile is not None:
            open(opts.outputfile, "w").write(vstring)