循环与递归

def printN1(number):
    '''递归'''
    if number >=0:
        print(number)
        printN(number-1)
    

def printN2(number):
    '''循环'''
    for i in range(0,number):
        print(number-i)

printN2(1000)
print('------我是递归分界线------')
printN1(1000)