你可能会对我写的一个小Python模块感兴趣，它使命令行参数的处理更容易(开源且免费使用)- Commando

import sys

# Command line arguments are stored into sys.argv
# print(sys.argv[1:])

# I used the slice [1:] to print all the elements except the first
# This because the first element of sys.argv is the program name
# So the first argument is sys.argv[1], the second is sys.argv[2] ecc

print("File name: " + sys.argv[0])
print("Arguments:")
for i in sys.argv[1:]:
    print(i)

让我们把这个文件命名为command_line.py，然后运行它:

C:\Users\simone> python command_line.py arg1 arg2 arg3 ecc
File name: command_line.py
Arguments:
arg1
arg2
arg3
ecc

现在让我们写一个简单的程序sum.py:

import sys

try:
    print(sum(map(float, sys.argv[1:])))
except:
    print("An error has occurred")

结果:

C:\Users\simone> python sum.py 10 4 6 3
23

Pocoo的点击更直观，需要的样板文件更少，而且至少和argparse一样强大。

到目前为止，我遇到的唯一缺点是您不能对帮助页面进行很多自定义，但这通常不是必需的，而docopt似乎是明确的选择。

docopt库非常漂亮。它为你的应用程序从usage字符串中构建一个参数dict。

来自docopt自述文件:

"""Naval Fate.

Usage:
  naval_fate.py ship new <name>...
  naval_fate.py ship <name> move <x> <y> [--speed=<kn>]
  naval_fate.py ship shoot <x> <y>
  naval_fate.py mine (set|remove) <x> <y> [--moored | --drifting]
  naval_fate.py (-h | --help)
  naval_fate.py --version

Options:
  -h --help     Show this screen.
  --version     Show version.
  --speed=<kn>  Speed in knots [default: 10].
  --moored      Moored (anchored) mine.
  --drifting    Drifting mine.

"""
from docopt import docopt


if __name__ == '__main__':
    arguments = docopt(__doc__, version='Naval Fate 2.0')
    print(arguments)

还有一个选项是argh。它建立在argparse的基础上，让你可以写这样的东西:

import argh

# declaring:

def echo(text):
    "Returns given word as is."
    return text

def greet(name, greeting='Hello'):
    "Greets the user with given name. The greeting is customizable."
    return greeting + ', ' + name

# assembling:

parser = argh.ArghParser()
parser.add_commands([echo, greet])

# dispatching:

if __name__ == '__main__':
    parser.dispatch()

它将自动生成帮助等等，您可以使用装饰器来提供关于参数解析应该如何工作的额外指导。

#set default args as -h , if no args:
if len(sys.argv) == 1: sys.argv[1:] = ["-h"]