用python制作一个简单的小程序
Python简单基础小程序的实例代码1 九九乘法表
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for i in range ( 9 ): #从0循环到8 i + = 1 #等价于 i = i+1 for j in range (i): #从0循环到i j + = 1 print (j, '*' ,i, '=' ,i * j,end = ' ' ,sep = '') # end默认在结尾输出换行,将它改成空格 sep 默认 j,'*',i,'=',i*j 各元素输出中间会有空格 print () #这里作用是输出换行符 |
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i = 1 while i < = 9 : j = 1 while j < = i: print ( "%d*%d=%d" % (j,i,i * j),end = ' ' ) # 格式化输出 j + = 1 i + = 1 print () |
2 登录程序
登录程序,有三次输入账号、密码的机会,错误三次账号锁定
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user = 'hello world' paswd = 123456 username = input ( "请输入用户名:" ) password = input ( "请输入密码:" ) for i in range ( 3 ): if username = = user and int (password) = = paswd: #判断用户名和密码是否都匹配 print ( "欢迎您的到来" ) break elif i < 2 : username = input ( "请输入用户名:" ) password = input ( "请输入密码" ) elif i = = 2 : print ( "账户已锁定" ) break |
3,购物车程序
功能:
1,输入余额
2,显示商品列表
3,输入要购买的东西
4,判断是否有能力购买
5,是否继续
6,输出已购买的商品和余额
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shop_car = [] #用来存放购买的商品 goods = { 1 :[ '手机' , 2500 ], 2 :[ '电脑' , 3500 ], 3 :[ '自行车' , 4500 ], 4 :[ '宝马' , 20000 ] } #商品列表 while true: salary = input ( "你有多少钱:" ) # 输入有多少钱 if salary.isdigit(): # 判断是否为整数 salary = int (salary) # 将字符串转化为整数 print ( "是否要买东西:" ) flag1 = input ( "y n:" ) if flag1.upper() = = 'n' : # 将字符串大写 exit( "欢迎下次光临" ) # 退出程序并输出“欢迎下次光临” elif flag1.upper() = = 'y' : break # 终止循环 elif flag1.upper() = = 'q' : exit( "欢迎下次光临" ) elif salary.upper() = = 'q' : exit( "欢迎下次光临" ) while true: print ( "淘宝" .center( 30 , '-' )) # 输出以-----淘宝------ for i in goods: # 循环输出 print (i,goods[i]) print ( "淘宝" .center( 30 , '-' )) choice_good = input ( "请输入商品编码:" ) #接受一个字符串 if choice_good.isdigit() : choice_good = int (choice_good) if choice_good > = 1 and choice_good < = 4 : if salary > = goods[choice_good][ 1 ]: shop_car.append(goods[choice_good][ 0 ]) # 给字典中添加元素 salary = salary - goods[choice_good][ 1 ] print ( "您购买的商品为:" , goods[choice_good][ 0 ]) print ( "余额为:" , salary) print ( "是否继续:" ) contin = input ( "y n" ) if contin.upper() = = 'n' : break elif contin.upper() = = 'q' : break else : print ( '余额不足' ) print ( "是否继续:" ) contin = input ( "y n" ) if contin.upper() = = 'n' : break elif contin.upper() = = 'q' : break else : print ( "没有这个编号" ) continue # 暂停本次循环 elif choice_good.upper() = = "q" : break else : print ( "我看不懂。。。" ) print ( "你买了:" ,end = ' ' ) for i in shop_car: print (i,end = ' ' ) print () print ( "余额为:" ,salary) print ( "欢迎下次光临" ) |
总结
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如果你觉得本文对你有帮助,欢迎转载,烦请注明出处,谢谢!原文链接:https://www.cnblogs.com/cong12586/archive/2019/04/27/10780866.html