【python2-1】变量

变量的创建

price = 10.5
weight = 7.5
money = price*weight
print('总消费是%.2f元'%money)

变量的修改

year = 2023
print(year)
year = 2024
print(year)

money = 10
money = '10元'
print(money)

快速注释：CTRL+左斜杠/

price = 10.5
weight = 7.5
money = price*weight
money = money-5
print('总消费是%.2f元'%money)

常量

好好起名字，以免有歧义

变量的类型

a = '34iugi'
print(type(a))

a = '34iugi'
print(type(a))
print(isinstance(a,str))