On Thu, 2007-04-05 at 12:51 -0700, [EMAIL PROTECTED] wrote:
> I would like to gauge interest in the following proposal:
>
> Problem:
>
> Assignment statements cannot be used as expressions.
>
> Performing a list of mutually exclusive checks that require data
> processing can cause excessive tabification. For example, consider
> the following python snipet...
>
> temp = my_re1.match(exp)
> if temp:
> # do something with temp
> else:
> temp = my_re2.match(exp)
> if temp:
> # do something with temp
> else:
> temp = my_re3.match(exp)
> if temp:
> # do something with temp
> else:
> temp = my_re4.match(exp)
>
> # etc.
>
> Even with 2-space tabification, after about 20 matches, the
> indentation will take up half an 80-column terminal screen.
If that's your only justification for this proposal, that's almost
certainly not enough to convince anybody of its necessity. Your code
example should be rewritten as a loop:
match_actions = [(my_re1, action1),
(my_re2, action2),
...]
for my_re, action in match_actions:
if my_re.match(exp):
action(exp)
break
Hope this helps,
Carsten
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