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Created on 2011-10-05 23:31 by yoch.melka, last changed 2022-04-11 14:57 by admin. This issue is now closed.
| Messages (4) | |||
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| msg144976 - (view) | Author: yoch (yoch.melka) | Date: 2011-10-05 23:31 | |
Hi,
I would like to use backreferences in list comprehensions (or other comprehensions), such as :
[[elt for elt in lst if elt] for lst in matrix if \{1}]
# \{1} is back reference to [elt for elt in lst if elt]
# to filter the result of the first comprehension
It would be possible to do this ?
Thanks
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| msg145061 - (view) | Author: Mark Dickinson (mark.dickinson) *  |
Date: 2011-10-07 08:12 | |
Hi, You're proposing a change to the core language and syntax; the bug-tracker's not really appropriate for this---it's better suited for small, focused changes (preferably with patches!). I suggest that you start a thread on the python-ideas mailing list for wider discussion and consideration of possible alternative solutions to the problem you're trying to solve. It's likely that a PEP and a working implementation would also be required to push this through. I'm going to close this for now; it can be reopened if the python-ideas discussion is positive. |
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| msg145062 - (view) | Author: Mark Dickinson (mark.dickinson) * |
Date: 2011-10-07 08:17 | |
I meant to include a link to the mailing list: http://mail.python.org/mailman/listinfo/python-ideas |
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| msg145179 - (view) | Author: yoch (yoch.melka) | Date: 2011-10-08 17:50 | |
Okay, thanks ;) |
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| History | |||
|---|---|---|---|
| Date | User | Action | Args |
| 2022-04-11 14:57:22 | admin | set | github: 57321 |
| 2011-10-08 17:50:07 | yoch.melka | set | messages: + msg145179 |
| 2011-10-07 08:17:51 | mark.dickinson | set | messages: + msg145062 |
| 2011-10-07 08:12:46 | mark.dickinson | set | status: open -> closed components: + Interpreter Core versions: + Python 3.3 nosy: + mark.dickinson messages: + msg145061 resolution: rejected |
| 2011-10-05 23:31:33 | yoch.melka | create | |