Could you please reconsider how would you
work with this new one and see if my steps
are correct? If you agree with my 7-step
execution for the new regex, then:
We finally found a real bug for re.findall:
re.findall('((.a.)*)*', 'Mary has a lamb')
[('', 'Mar'), ('', ''), ('', ''), ('', 'lam'), ('', ''), ('', '')]
Cheers,
Yingjie
Nope, I'm afraid it is lack of understanding again.
The outer capturing group that you've added is matching the entirety of
what's matched by the inner one (which is six matches, that you now
accept). Because it only returns the last of them, it returns one thing
- an empty string (that being the last thing that the inner group
matched). Findall is simply returning that in each of the six return
values it needs to return because of the inner one.
You just need to accept that findall (like all of re) works fine, and if
it doesn't seem to do what you expect, it's because the expectation is
wrong.
Cheers, JB
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