39 lines
827 B
Python
39 lines
827 B
Python
# -*- coding: utf-8 -*-
|
||
|
||
# Python 程序的变量（variables）定义
|
||
# Version: 0.1
|
||
# Author: YuCheng Hu
|
||
|
||
# 创建变量和指定变量类型
|
||
x = 1 # 变量赋值定义一个变量x
|
||
print(id(x)) # 打印变量x的标识
|
||
print(x + 1) # 使用变量
|
||
|
||
x = 2 # 量赋值定义一个变量x
|
||
print(id(x)) # 此时的变量x已经是一个新的变量
|
||
print(x + 1) # 名称相同，但是使用的是新的变量x
|
||
|
||
x = 4 # x 是整数类型的
|
||
x = "OSSEZ" # x 类型将会修改为字符串
|
||
print(x)
|
||
|
||
print("==================")
|
||
x = 5
|
||
y = "John"
|
||
print(x)
|
||
print(y)
|
||
|
||
# 类型转换
|
||
x1 = str(3) # x will be '3'
|
||
x2 = int(3) # y will be 3
|
||
x3 = float(3) # z will be 3.0
|
||
x4 = chr(31243) # z will be 3.0
|
||
x5 = ord('程') # z will be 3.0
|
||
|
||
# 获得类型
|
||
print("==================")
|
||
x = 5
|
||
y = "John"
|
||
print(type(x))
|
||
print(type(y))
|