批处理编写进阶解读

#!/usr/bin/python3

import sys, getopt

def main(argv):
    inputfile = ''
    outputfile = ''
    try:
        opts, args = getopt.getopt(argv,"h:i:o:",["infile=","outfile="])
    except getopt.GetoptError:
        print ('GetoptError, usage: command_line_usage.py -i  -o ')
        sys.exit(2)
    for opt, arg in opts:
        print("opt:"+opt+",arg:"+arg)
        if opt == '-h':
            print ('usage: command_line_usage.py -i  -o ')
            sys.exit()
        elif opt in ("-i", "--infile"):
            inputfile = arg
        elif opt in ("-o", "--outfile"):
            outputfile = arg
    print ('Input file is "', inputfile)
    print ('Output file is "', outputfile)

if __name__ == "__main__":
    main(sys.argv[1:])

这是典型的命令行传递参数,
支持传递的语法
python xxx.py -i 输入 -o 输出
python xxx.py --infile 输入 -outfile 输出
另外
python xxx.py -h
获取帮助信息

那么输入python xxx.py xxxx如何得到信息呢?我上面对h进行勒修改改成勒h:如果去掉冒号,是无法取到值.