37 lines
758 B
Python
37 lines
758 B
Python
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# -*- coding: utf-8 -*-
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# Python 程序的变量（variables）定义
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# Version: 0.1
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# Author: YuCheng Hu
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# 创建变量和指定变量类型
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x = 1 # 变量赋值定义一个变量x
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print(id(x)) # 打印变量x的标识
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print(x + 1) # 使用变量
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x = 2 # 量赋值定义一个变量x
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print(id(x)) # 此时的变量x已经是一个新的变量
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print(x + 1) # 名称相同，但是使用的是新的变量x
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x = 4 # x 是整数类型的
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x = "OSSEZ" # x 类型将会修改为字符串
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print(x)
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print("==================")
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x = 5
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y = "John"
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print(x)
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print(y)
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# 类型转换
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x = str(3) # x will be '3'
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y = int(3) # y will be 3
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z = float(3) # z will be 3.0
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# 获得类型
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print("==================")
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x = 5
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y = "John"
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print(type(x))
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print(type(y))
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