Propose Review of Single Element Tuple Handling in Python

[Stefan2 (Stefan)]

Related previous topic:

Syntax error for naked trailing comma for 1-tuple

Python has a foot gun with naked trailing comma. I got bitten by this again today: url = invoice.url[len(prefix):], The trailing comma shouldn’t be there, so url is now a tuple, and that fails much later as the url variable is passed around a bit before it’s being used. In my time on the Unofficial Django Discord I see this mistake quite often. And very often it takes quite a while for anyone to notice what the problem is, even when several very senior developers are looking at a full traceba…