python函数得参数

默认参数：

>>> def enroll(name,gender,age=6,city='Beijing'):
        print('name:',name)

>>> enroll('Sarah,'F')

可变参数：

>>> def calc(*numbers):
        sum = 0
        for n in numbers:
            sum = sum + n*n
        return sum

>>> calc(1,2)
>>> calc(1,2,3)

关键字参数:

>>> def person(name,age,**kw):
        print('name:',name,'age:',age,'other:',kw)

>>> person('Michael',30)
name:Michael  age:30  other:{}

>>> person('Adam',45, gender='M', job='Engineer')
name:Adam  age:45  other:{'gender':M,'job':'Engineer'}

命名关键字参数：

>>> def person(name, age, *, city, job):
        print(name, age, city, job)
>>> person('Jack', 24, city='Beijing', job='Engineer')
Jack 24 Beijing Engineer