python的输入输出语句_Python基本输出语句/输入语句/变量解析

print格式化输出

#-*- coding: utf-8 -*-#print (format(val, 'm,n'))#val：值 format_modifier：输出占位m,精度n

print (format(12.3456,'6.2f'))12.35

print (format(12.3456,'6.3f'))12.346

print (format(12.3456,'6.6f'))12.345600

print (format(12.3456,'6.0f'))12

print输入语句

input接收的值会转化为字符型，int（）可将值转化为整型数据，float（）将值转化为浮点型数据

#-*- coding: utf-8 -*-

name= raw_input('请输入姓名:')printnameprinttype(name)

age= raw_input('请输入年龄:')

age=int(age)printtype(age)

age= age + 1

printage

weight= float(raw_input('请输入体重:'))printweightprinttype(weight)"""运行结果"""请输入姓名: lee

lee请输入年龄:13

14请输入体重:40.22

40.22

变量解析

变量改变只改变指向地址不改变指向内容

#-*- coding: utf-8 -*-

x= 13

printx, id(x)

y= 12

printy, id(y)

x=yprintx, id(x)

z= 13

printz, id(z)"""运行结果"""

13 73496064

12 73496076

12 73496076

13 73496064