study note10

Posted 2020-10-20 deakin-du

参数组：

def test(*args):
    print(args)
test(1,2,3,4,5,6)
test(*[1,2,3])#转成元祖

def test1(a,*args):  #args只能接收位置参数，不能接受关键字参数
    print(a)
    print(args)
test1(1,2,3,4,5) #1会传给a，2345传给args

def test2(**kwargs):  #kwargs接收关键字参数，转成字典
    print(kwargs)
    print(kwargs[‘name‘])
    print(kwargs[‘age‘])
test2(name=‘deakin‘,age=28)#字典
test2(**{‘name‘:‘deakin‘,‘age‘:28})

def test3(name,**kwargs):
    print(name)
    print(kwargs)
test3(‘john‘,age=10,sex=‘M‘)

def test4(name,age=18,**kwargs):
    print(name)
    print(age)
    print(kwargs)
test4(‘deakin‘,job=‘IT‘)

def test5(name,age=28,*args,**kwargs):
    print(name)
    print(age)
    print(args)
    print(kwargs)
test5(‘amy‘,20,2,3,4,5,‘deakin‘,job=‘IT‘)  #2345，deakin都是位置参数，传给args转为元祖

打印结果:
test:
(1, 2, 3, 4, 5, 6)
(1, 2, 3)

test1:
1
(2, 3, 4, 5)
test2:
{‘age‘: 28, ‘name‘: ‘deakin‘}
deakin
28
{‘age‘: 28, ‘name‘: ‘deakin‘}
deakin
28
test3:
john
{‘sex‘: ‘M‘, ‘age‘: 10}

test4:
deakin
18
{‘job‘: ‘IT‘}

test5:
amy
20
(2, 3, 4, 5, ‘deakin‘)
{‘job‘: ‘IT‘}