python. and とか or とか notとか

and, or, notの動作についての確認メモ

>>> 1 or 3    #左がtrueでなければ右のを返す
1
>>> 0 or 3
3
>>> [] or 3
3
>>> [0] or 3
[0]

>>> 1 and 2, 0 and 3 #左がTrueなら右のを返す。
(2, 0)
>>> [] and 4
[]
>>>