Python的Web框架之CherryPy的介绍安装基本使用

　　1 CherryPy：
　　=========
　　1.1 是一种用于Python的、简单而非常有用的Web框架。
　　1.2 可以运行在最新版本的Python、Jython、Android上。
　　1.3 其主要作用是以尽可能少的操作将Web服务器与Python代码连接。
　　1.4 是 CGI 的优秀替代品，并且是创建 Python Web 应用程序的良好基础。
　　2 环境：
　　=====
　　华为笔记本电脑，深度deepin-linux操作系统，python3.8，微软vscode编辑器，谷歌浏览器。
　　3 官网：
　　=====安装 pip install CherryPy #本机安装 #sudo pip3.8 install CherryPy   #有点慢，放弃 sudo pip3.8 install -i https://mirrors.aliyun.com/pypi/simple CherryPy #超快
　　4 安装：
　　=====  WARNING: The script calc-prorate is installed in ＂/usr/local/python3.8/bin＂ which is not on PATH.   Consider adding this directory to PATH or, if you prefer to suppress this warning, use --no-warn-script-location.   WARNING: The script cheroot is installed in ＂/usr/local/python3.8/bin＂ which is not on PATH.   Consider adding this directory to PATH or, if you prefer to suppress this warning, use --no-warn-script-location.   WARNING: The script cherryd is installed in ＂/usr/local/python3.8/bin＂ which is not on PATH.   Consider adding this directory to PATH or, if you prefer to suppress this warning, use --no-warn-script-location.
　　提醒：没有设置路径，暂时不管，估计没有设置软连接。  WARNING: The script calc-prorate is installed in ＂/usr/local/python3.8/bin＂ which is not on PATH.   Consider adding this directory to PATH or, if you prefer to suppress this warning, use --no-warn-script-location.   WARNING: The script cheroot is installed in ＂/usr/local/python3.8/bin＂ which is not on PATH.   Consider adding this directory to PATH or, if you prefer to suppress this warning, use --no-warn-script-location.   WARNING: The script cherryd is installed in ＂/usr/local/python3.8/bin＂ which is not on PATH.   Consider adding this directory to PATH or, if you prefer to suppress this warning, use --no-warn-script-location.
　　5 hello world：
　　5.1 方法一，代码：import cherrypy class HelloWorld(object):     @cherrypy.expose     def index(self):         return ＂Hello World!＂ cherrypy.quickstart(HelloWorld())
　　运行示范：
　　5.2 方法二，代码：import cherrypy   class HelloWorld:       def index(self):           return ＂Hello world!＂       index.exposed = True   #暴露设置为true，区别 cherrypy.quickstart(HelloWorld())
　　5.3 方法三，代码：import cherrypy class HelloWorld(object):     @cherrypy.expose     def index(self):         return ＂Hello world!＂ if __name__ == ＂__main__＂:     cherrypy.quickstart(HelloWorld())
　　6 显示html的plotly的柱状图法import cherrypy class HtmlShow(object):     @cherrypy.expose     def index(self):         return ＂＂＂ 	 		 		 	 	 		 	 	 	 	      ＂＂＂  if __name__ == ＂__main__＂:     cherrypy.quickstart(HtmlShow())
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