输出----------------------------------------------------Hello World!12Hello World!HloWrdello!dlroW olleHHello WHello WxbbTrueFalseaaa

We have a number of ways to import the data. Reading the file from disk:

Given a string, determine if it is a palindrome, considering only alphanumeric characters and ignoring cases.

!/usr/bin/env python-*- coding: utf-8 -*-name = "app"t = name.capitalize() #首字母大写print(t)name = "app"t = name.center(20) #居中显示print(t)name = "app"...

int转成string，函数int(string)string转成int，函数str(number)如下：

Given a string of numbers and operators, return all possible results from computing all the different possible ways to group numbers and operators. The valid op...

string = string.encode(‘utf-8’)

1.添加Memo类，至少包含id，name，thing，date四个属性，date可以暂时使用字符串表示，比如‘1.2’，‘3.8’，暂时不用考虑时间相关模块

近期在研究py的网络编程，编写爬虫也是顺利成章的，开始在纠结与用正则表达式来匹配，到后来发现了Beautifulsoup，用他可以非常完美的帮我完成了这些任务：...

呼叫建立需要三种参数,有四个可配置的dial peer命令特性来匹配这三个参数。