str1='abcd' print(str1[::-3]) print(str1[-1::-1]) print(str1[::-1])
Output :
da dcba dcba
You can see that when the step size is negative, whether or not the starting subscript is specified as -1 It's all the same .
today ,ofter Will share an exc
% placeholder is a placeholder
本文目錄:一、要實現的目標二、創建項目app1.APP介紹2
項目介紹當前在市場經濟的快速發展下,我國的經濟形勢也在不斷的
Jupyter Notebook Many students
Preface : This article will te