1、下载安装包https://www.python.org/downloads/
2、安装默认安装路径：C:\python27
3、配置环境变量【右键计算机】--》【属性】--》【高级系统设置】--》【高级】--》【环境变量】--》【在第二个内容框中找到 变量名为Path 的一行，双击】 --> 【Python安装目录追加到变值值中，用 ； 分割】如：原来的值;C:\python27，切记前面有分号

print("Hello World!")

# -*- coding:utf-8 -*-
name ="james"

#！ /usr/bin/env python
# -*- coding:utf-8 -*-
name = input("Please enter your username:")
print("Hello" + name)

“hello world”

name = "Lyle"
print("I am %s"% name)
#输出：I am Lyle

name_list =['james','tom','nick']

names = ["战狼","哪吒","极限挑战"","胡歌","肖申克的救赎","NBA"]
print(names[1:4])   #取去下标1到下标4之间的，包括1不包括4
print(names[1:-1])  #取出下标1到-1的值，不包括-1
print(name[:3])     #取出从零开始到3的值 ，不包括3
print(name[0::2])  #取出从零开始，步长为2的值

>>>moves=["战狼","哪吒","极限挑战","胡歌","肖申克的救赎","NBA"]
>>>moves.append("CBA")   #在列表中追加一个值["战狼","哪吒","极限挑战"","胡歌","肖申克的救赎","NBA","CBA"]

>>>moves=["战狼","哪吒","极限挑战","胡歌","肖申克的救赎","NBA"]
>>>moves.insert(2,"绿皮书") #在“极限挑战”前面插入一个值
>>>moves
["战狼","哪吒","绿皮书","极限挑战","胡歌","肖申克的救赎","NBA"]

>>>moves=["战狼","哪吒","极限挑战","胡歌","肖申克的救赎","NBA"]
>>>del moves[2]
>>>moves
moves=["战狼","哪吒","胡歌","肖申克的救赎","NBA"]>>>moves.remove("胡歌")   #删除指定元素
>>>moves
["战狼","哪吒","极限挑战","肖申克的救赎","NBA"]>>>moves.pop()   #删除列表最后一个值
>>>moves
["战狼","哪吒","极限挑战","胡歌","肖申克的救赎"]

>>>moves=["战狼","哪吒","极限挑战","胡歌","肖申克的救赎","NBA"]
>>>b = [1,2,3]
>>>moves.extend(b)
>>>moves
["战狼","哪吒","极限挑战","胡歌","肖申克的救赎","NBA",1,2,3]

>>>names=["Alex","Amy","Tom","Amy","Jams"]
>>>names.count("Amy")
2

ages=（1,2,3,4,5,6）

#作用：存多个值，对比列表来说，元组是不可变，主要是用来读
#定义：与列表类型比，将[]换成{}
#元组操作：
#1.按索引取值
#2.切片
#3.长度
#4.循环