python基础语法获取列表中的多个元素_切片操作

list=[10,20,30,40,50,60,70,80]
print(list[6:0:-2])
print(list[6:0:-1])
print(list[6:0:-1])
print(list[1:6:1])

E:\PycharmProjects\pythonProject\venv\Scripts\python.exe E:/PycharmProjects/pythonProject/demon1/demo1.py
[70, 50, 30]
[70, 60, 50, 40, 30, 20]
[70, 60, 50, 40, 30, 20]
[20, 30, 40, 50, 60]

进程已结束,退出代码0

语法格式        列表名[start:stop:step]  

切片范围为左闭右开区间（左边数能取到，右边不能）