Yet Another Command Line Parser

[Andrew Dalke]

Manlio Perillo wrote:
> # add spaces to avoids errors like: 1 2, 3 4 -> (12, 34)
> _options = ' '.join(sys.argv[1:])
> 
> def call(func):
>     """
>     Call func, passing to it the arguments from the command line
>     """
>     exec('func(' + _options + ')')

> The only problem is that error messages are ugly.

And it's a huge security hole.  What if I did


script.py "x=6)\
import os
os.system('ls -l')"

Even if not a security hole, it's tricky to handle the
combined shell and Python escaping rules

   script.py  x="This is a string"

won't work, while

   script.py  'x="This is a string"'

should. Embedding ! and \escaped characters should be
even more fun.

				Andrew
				dalke at dalkescientific.com