条件判断与缩进,注意冒号

加次数限制#猜数字lucky_num = 19input_num = -1

#次数限制

count = 0#while lucky_num!=input_num and count < 3:while count < 3:input_num = int(input("please input your lucky_num:"))if input_num < lucky_num:print("please input big num")elif input_num > lucky_num:print("please input little num")else:print("great")breakcount += 1print(count)else:print("too many counts!!!!")注意缩进，python是对缩进敏感的语言注释：ctrl+/

for循环

#次数限制for i in range(3):input_num = int(input("please input your lucky_num:"))if input_num < lucky_num:print("please input big num")elif input_num > lucky_num:print("please input little num")else:print("great")breakelse:print("too many counts!!!!")