递归例子

 1 #!/usr/bin/env python

#encoding: utf-8

def func(arg1,arg2,stop):
    if arg1 == 0:
        print (arg1,arg2)
    arg3 = arg1 + arg2
    print (arg3)
    if arg3 < stop:
        func(arg2,arg3,stop)

func (0,1,100000000000)

'''
def func(arg1,arg2,stop):
    if arg1 == 0:
        print(arg1)
        print(arg2)

    arg3 = arg1 + arg2
    print (arg3)
    func(arg2, arg3, stop)
func (0,1,30)
'''

 递归的实现条件 1:函数内自己调用自己，2：有明确的退出条件，要不会死循环，报错