[issue33879] Item assignment in tuple mutates list despite throwing error

Change by R. David Murray : -- resolution: -> not a bug stage: -> resolved status: open -> closed ___ Python tracker ___ ___ Pytho

[issue33879] Item assignment in tuple mutates list despite throwing error

Karthikeyan Singaravelan added the comment: Interesting. I googled this and came across this note which covers this : https://docs.python.org/2/faq/programming.html#why-does-a-tuple-i-item-raise-an-exception-when-the-addition-works -- nosy: +xtreak ___

[issue33879] Item assignment in tuple mutates list despite throwing error

New submission from njayinthehouse : Seems like a bug. >>> a = (1, [1]) >>> a[1] += [2] Traceback (most recent call last): File "", line 1, in TypeError: 'tuple' object does not support item assignment >>> a (1, [1, 2]) -- messages: 319748 nosy: njayinthe