python 中,空的list是否等於None

原創 moluoyu 2020-06-16 06:42

文章目錄


最近在寫測試用例過程中,在判斷一個list爲空時,隨手寫下了如下代碼:

if listinstance is None:
	#do something 
	pass

發現當list爲空時,程序死活進步了後面的處理語句,於是發現了以下先關文章:
Why does “[] == False” evaluate to False when “if not []” succeeds?

簡單來說就是 [] != None, 但是在if語句中,當做真假來判斷時是爲False:
在這裏插入圖片描述

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