[Python] 判斷是否為 空(None) (0 為 False)
Conditionals / Conditional expressions
a is None/a is not None
a == None/a != None
not a(not 0為True)
Python 中視作 False 的物件
None,False0(),[],{},set(),range(0)
In if/while statement
if a:/if not a:while a:/while not a:
※ a 可以是變數,也可以是 list, dict, set, … 等 data structure
Last Updated on 2023/08/16 by A1go