Changing the value of a for loop index on the fly

Bengt Richter bokr at oz.net
Thu Mar 24 04:14:41 CET 2005


On Thu, 24 Mar 2005 02:48:28 GMT, bokr at oz.net (Bengt Richter) wrote:

>On Wed, 23 Mar 2005 23:27:54 +0100, "Gabriel F. Alcober" <gfa1977 at yahoo.ca> wrote:
>
>>Hi! There goes a newbie trouble:
>>
>>for i in range(0, len(subject)):
>>        if subject[i] in preps:
>>            psubject.append(noun_syn_parser(subject[0:i]))
>>            subject[0:i] = []
>>
>Perhaps (untested!):
>
>start = 0
>for i, subj in enumerate(subject):
>    if subj in preps:
>        psubject.append(noun_syn_parser(subject[start:i]))
>        start = i
>subject = subject[start:]  # optional if you don't need the leftovers
>
Mitja's last line (I didn't see his post -- forwarding delays I presume)
   subject[0:lastFound] = []
would not rebind, so that better reflects the OP's subject[0:i] = [] line.

Perhaps the enumerate was useful ;-/

Regards,
Bengt Richter



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