Suggest: .get() method on lists.

[Gerrit Holl]

Martin von Loewis wrote on 948374851:
> file = sys.stdin
> if len(sys.argv) > 1:
>     file = open(sys.argv[1])
> 
> right now, to open the file. I can't see how you could get the
> equivalent of that code with .get.

f=sys.argv.get(1) # default = None
if not f: f = sys.stdin

But what about a sys.argv like this (untested)
class argv(UserList.UserList):
    def has_key(self, num):
        return len(self.data) > num:

    def get(self, num, default=None):
        if self.has_key(num): return self.data[num]
        else: return default

Wouldn't this be a good idea? I see too much code like above.

regards,
Gerrit.

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