py 函数和模块

import md1 as m1
import md2
#三个数相加求和

def add(a = 0, b = 0, c = 0):
    return a + b + c

print(add())
print(add(1))
print(add(1, 2, 3))
print(add(c = 50, b = 1, a = 2))

#可变参数
def fun(*args):
    for val in args:
        print(val)

fun(1)
fun(1, 2, 3, 99, 88)

m1.fun()
md2.fun()

#from module2 import foo

#from module2 import foo as f2