Message384711
Example 1:
((a)|b\2)*
^^^ Group 2
((a)|b\2)*
^^ Reference to group 2
The reference refers backwards to the group.
Example 2:
(b\2|(a))*
^^^ Group 2
(b\2|(a))*
^^ Reference to group 2
The reference refers forwards to the group.
As I said, the re module doesn't support forward references to groups.
If you have a regex where forward references are unavoidable, try the 3rd-party 'regex' module instead. It's available on PyPI. |
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Date |
User |
Action |
Args |
2021-01-09 02:38:37 | mrabarnett | set | recipients:
+ mrabarnett, ezio.melotti, Renji |
2021-01-09 02:38:37 | mrabarnett | set | messageid: <1610159917.5.0.99181953023.issue42871@roundup.psfhosted.org> |
2021-01-09 02:38:37 | mrabarnett | link | issue42871 messages |
2021-01-09 02:38:37 | mrabarnett | create | |
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