Still one of the oldest #Python oddities I've ever seen 🐍🤔
>>> a = ([],)
>>> a[0] += ["what"]
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: 'tuple' object does not support item assignment
>>> a
(['what'],)
Note that an exception was raised but the operation also worked! 😳 #pythonoddity
@treyhunner Each time I see this I still have to stop and look at it again, despite having seen it before!
