ure - regular expressions api

[cagiva]

Why doesn't ure have the ure.sub() or match.groupdict() functions? Is there a workaround for that in the MicroPython?

[cagiva]

I was able to make it work without sub() and groupdict(). However, I cannot figure out why this generates ValueError: Error in regex, but it run perfectly fine with standard Python re api.

Code: Select all

import ure
ure.compile('^{}$'.format('/cam/(?P<epoch>.+)'))

[SpotlightKid]

From the documentation:

Counted repetitions ({m,n}), more advanced assertions, named groups, etc. are not supported.

(My emphasis)

[pythoncoder]

@cagiva I suggest you read https://github.com/micropython/micropyt ... ifferences for some insight into the MicroPython micro libraries.

[cagiva]

Hi Peter,

I'm well aware that MicroPython does not support the entire python standard library. However, it will be great if the core team can consider extending the basic grouping syntax to add named-groups. It's a very helpful feature for parsing dynamic URIs/URLs containing named gapturing groups. In particular for those running with the ESP8266 boards.

This would be a change to extmod/modure.c and it should not make its implementation that much heavier for the small platforms.