Python函数的不定长参数

需要一个函数能处理比当初声明时更多的参数，这些参数叫做不定长参数，声明时不会对这些参数命名。

‘*’以元组形式输出多变量形式的参数

>>>def employee(*args):           #*args后可接别的参数        print(type(args))        print(args)   #多变量参数people1,people2>>>people1='Tom';people2='July'>>>employee(people1,people2)<class 'tuple'>('Tom', 'July')   #多变量参数'xiaoming','lilei'>>>employee('xiaoming','lilei')<class 'tuple'>('xiaoming', 'lilei')

‘ ** ’以字典形式输出多变量形式的参数

>>>def employeed(**args):        print(type(args))        print(args)   #多变量参数Newton=42,Euler=30>>>employeed(Newton=42,Euler=30)<class 'dict'>{'Euler': 30, 'Newton': 42}

>>>def groupp(x,y=1,*people,**name):          print(x,y,people,name)    #**name后不能接变量                    #test>>>groupp(1,'Tom','Jane',July=42)1 Tom ('Jane',) {'July': 42}>>>groupp(2,3,4,5,6)2 3 (4, 5, 6) {}>>>groupp(30,July=42)30 1 () {'July': 42}