Linux下Python递归文件目录

#!/usr/bin/python3import osimport sysdef scan(path):    for x in os.listdir(path):        newpath = os.path.join(path,x)        if os.path.isdir(newpath):            scan(newpath)        elif os.path.isfile(newpath):            print(newpath)def main(argv):    l = len(sys.argv)    if l !=2 :        print("请输入需要遍历的目录!")        print("usage:<scan filepath>")        return    path = sys.argv[1]    scan(path)if __name__ == '__main__':    main(sys.argv[1:])