黑马程序员python教程，8天python从入门到精通，学python看...

P16

# 定义变量记录钱包余额

money = 50

print("当前钱包余额:50")

money = money -10

print("购买了冰淇淋，花费：10元,还剩余：",money,"元")

money = money - 5

print("购买了可乐，花费：5元，还剩余：",money,"元")

print("最终，钱包剩余：",money,"元")