在编写python函数时,无意中发现一个问题:python中的变量不能以数字打头,以下函数中定义了一个变量3_num_varchar,执行时报错. 函数如下: def database_feild_varchar_trans(in_feild): ''' transfer the feild if varchar then 3times lang else no transfer ''' feild_split = in_feild.split(' ') is_va
猜数字游戏 系统生成一个100以内的随机整数, 玩家有6次机会进行猜猜看,每次猜测都有反馈(猜大了,猜小了,猜对了-结束) 6次中,猜对了,玩家赢了. 否则系统赢了 #!/usr/bin/env python import random secret=random.randint(1,100) guess=0 tries=0 print "This game is to guess a number for you!" print " It is a number f
2015.5.25第一天下载Python IDLE,写个猜数字的小游戏来熟悉这门语言: times=6 letters=[100] for i in range(1,times): a = input("input the number you guess:") try: b = int(a) if isinstance(b,int): if i <5: if int(a) in letters: print("%s is the right answer, you w
数字 写在最前,必须要会的:int() 整型 Python3里无论数字多长都用int表示,Python2里有int和Long表示,Long表示长整型 有关数字的常用方法,方法调用后面都必须带括号() int():将字符串转换为整型,且字符串内容只能是数字 a = " b = "123a" c = int(a) d = int(b) # ValueError: invalid literal for int() with base 10: '123a' print(type(c