首先看一下官方教程中給出的例子：

def cheeseshop(kind, *arguments, **keywords):print("-- Do you have any", kind, "?")print("-- I'm sorry, we're all out of", kind)for arg in arguments:print(arg)print("-" * 40)for kw in keywords:print(kw, ":", keywords[kw])

想必大部分人都是學過C/C++語言的，看到參數列表你可能會想到C語言中的指針。但是Python語言中并沒有指針這個概念。
接下來看一下該函數的調用以及輸出結果：

cheeseshop("Limburger", "It's very runny, sir.","It's really very, VERY runny, sir.",shopkeeper="Michael Palin",client="John Cleese",sketch="Cheese Shop Sketch") -- Do you have any Limburger ? -- I'm sorry, we're all out of Limburger It's very runny, sir. It's really very, VERY runny, sir. ---------------------------------------- shopkeeper : Michael Palin client : John Cleese sketch : Cheese Shop Sketch

其實這里涉及到一個概念：
在定義函數時，*代表收集參數，**代表收集關鍵字參數。
*arguments用來收集參數："It’s very runny, sir."和 “It’s really very, VERY runny, sir.”
**keywords用來收集關鍵字參數: shopkeeper=“Michael Palin”、client="John Cleese"和sketch=“Cheese Shop Sketch”

總結

以上是生活随笔為你收集整理的python函数参数列表中的*与**的全部內容，希望文章能夠幫你解決所遇到的問題。

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