Author andrei.avk
Recipients andrei.avk, ezio.melotti, mrabarnett, reuven, rhettinger, serhiy.storchaka, terry.reedy
Date 2021-07-17.14:52:02
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I think the biggest issue here is not how to explain it clearly in the docs, but that a lot of users will not confirm this in the docs based on the combination of:

1. c{1,5} is similar to slicing, also similar to python list definition, and python sets, all of which allow spaces for readability.

2. there is no error or warning

3. c{1,5} having one meaning and c{1, 5} having completely different meaning with no warning is deeply weird unless you think thoroughly through all of the implications.

I would prefer a warning to be added. This leads to the question, where do you draw the line after which a warning is no longer added?

I think I would allow this form as the most extreme where warning is still shown:

c{    1,     5      }

For any extra commas, newlines, etc, I would not show warnings because they look/feel different enough vs. {1,5}.

It seems to me that VERBOSE should have no effect inside of {1,5}.
Date User Action Args
2021-07-17 14:52:02andrei.avksetrecipients: + andrei.avk, rhettinger, terry.reedy, ezio.melotti, mrabarnett, serhiy.storchaka, reuven
2021-07-17 14:52:02andrei.avksetmessageid: <>
2021-07-17 14:52:02andrei.avklinkissue42469 messages
2021-07-17 14:52:02andrei.avkcreate