https://www.cnblogs.com/captain_jack/archive/2011/01/11/1933366.html

zzz.py

import sys

from optparse import OptionParser

filelist = ["/home/an/a","/home/an/b"]

def main(filelist,tmpfile=None):

    for filename in filelist:

        with open(filename) as file_obj:

            for line in file_obj:

                print(line)

if __name__ == '__main__':

    parse = OptionParser()

    parse.add_option("-f","--file",dest='filename',help='Here need one file at least', action='append')

    (options, args) = parse.parse_args()

    print(options.filename)

    if not options.filename:

        parse.error("YOU NEED INPUT A FILE")

        #或者是

        # sys.exit(1)

python zzz.py

# options.filename == None

python zzz.py  -f 'aaaa'

 # options.filename == ['aaaa']

python zzz.py  -f 'aaaa' 'bbb' 'ccc' 'dddd'

 # options.filename == ['aaaa']

# args = ['bbb','ccc','dddd']

python zzz.py  -f 'aaaa' -f 'bbb' -f 'ccc' -f 'dddd'

 # options.filename == [ 'aaaa' ,'bbb','ccc','dddd']

# args =[]