Functions of Python

First, function return value

function return value if it is multiple strings, numbers, lists, dictionaries, a tuple is returned, as follows

deftest1 ():Passdeftest2 ():#print ("Hello test2")    return0deftest3 ():#print (' Hello test3 ')    return1,10,['AAA', 111],{1:'www'}x=test1 () y=test2 () z=test3 ()Print(x)Print(y)Print(z)

Return results >>>>None0 (1, ['aaa'www'})

function parameter position and pass value:

def test4 (x, y    ): Print (x)     Print (y) def test5 (x, y    , z): Print (x)     Print (y)     Print (z) test4 (y=1,x=2) # test4 (2,y=1) #这样也是可以的test5 (3,z=1,y=2)

return result >>>21321

Second, function parameters

defTest1 (*args):#Accept n Positional arguments, convert to tuple output    Print(args) test1 (1,2,3,4)defTest4 (X,*args):#assigns the first value of the argument to X, and the remaining value to args, to the tuple output    Print(x)Print(args) test4 (1,2233,4,5)defTest2 (* *Kwargs):Print(Kwargs) test2 (name='yuqing', age=' -')defTest3 (Name,*args,**kwargs):#convert n keyword arguments to a dictionary    Print(name)Print(args)Print(Kwargs) test3 ('yyuqing', 1,2,sex='m', age=27)

Back to Results >>>(1, 2, 3, 4)1(2233, 4, 5){' Age':' -','name':'yuqing'}yyuqing (1, 2){' Age': 27,'Sex':'m'}

Functions of Python