原文鏈接

變長參數

• args（非關鍵字參數）

def myFun(*argv): for arg in argv: print (arg)myFun('Hello', 'Welcome', 'to', 'GeeksforGeeks') Hello Welcome to GeeksforGeeks # Python program to illustrate # *args with first extra argument def myFun(arg1, *argv):print ("First argument :", arg1)for arg in argv:print("Next argument through *argv :", arg)myFun('Hello', 'Welcome', 'to', 'GeeksforGeeks') First argument : Hello Next argument through *argv : Welcome Next argument through *argv : to Next argument through *argv : GeeksforGeeks

• ** kwargs（關鍵字參數）

def myFun(**kwargs): # print(kwargs)for key, value in kwargs.items():print ("%s == %s" %(key, value))print('#'*12)# Driver code myFun(first ='Geeks', mid ='for', last='Geeks') input_dict={'first' :'Geeks', 'mid' :'for', 'last':'Geeks'} myFun(**input_dict) first == Geeks mid == for last == Geeks ############ first == Geeks mid == for last == Geeks ############ def myFun(arg1, **kwargs): for key, value in kwargs.items():print ("%s == %s" %(key, value))# Driver code myFun("Hi", first ='Geeks', mid ='for', last='Geeks') first == Geeks mid == for last == Geeks

這種用法感覺非常奇怪

def myFun(arg1, arg2, arg3):print("arg1:", arg1)print("arg2:", arg2)print("arg3:", arg3)# Now we can use *args or **kwargs to # pass arguments to this function : args = ("Geeks", "for", "Geeks") myFun(*args)kwargs = {"arg1" : "Geeks", "arg2" : "for", "arg3" : "Geeks"} myFun(**kwargs)

總結

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