python 函数学习笔记一

def add_Number(a,b):
    if isinstance(a,(int,float,long)) and isinstance(b,(int,float,long)):
        return a + b
    return None
def sub_Number(a,b):
    if isinstance(a,(int,long,float)) and isinstance(b,(int,long,float)):
        return  a - b
    return None

def RondNumber():
    '''
    练习：1 随机生成一个1-100中间的一个整数，然后你去输入一个数，如果大了，就提示大了，
    然后让用户重新输入，如果是小了，那么提示小了，再让用户重新输入，
    如果用户输入的数是等于随机生成的数，那么就一下你一共猜测的总数是多少，随机数是多少，结束程序

    '''
    ncount = 0 #计数
    NumRand = int(random.random()*100)
    while True:
        ncount += 1
        Number = int(raw_input('eter number:\n'))
        if Number == NumRand:
            print 'yes!'
            sys.exit()
        elif Number > NumRand:
            print '输入大'
        else:
            print '输入小'

def game_Number():
    random_number= random.randint(1,101)
    times=0
    while 1:
        times+=1
        user_input_number = input("please input your guess number:")
        print user_input_number
        print type(user_input_number)
        if user_input_number == random_number:
            print "you guess %s times" %times
            print "the random number is %s" %random_number
            break
        elif user_input_number > random_number:
            print "bigger,please try again!"
        else:
            print "less,please try again!"

if __name__ == "__main__":
    #game_Number()
    #RondNumber()
    print add_Number(2,33)