Python支持安装大量第三方库，通过命令行下载可能不稳定，建议先在网上下载安装包至本地，再进行本地安装。 1、 首先需安装Python，然后访问www.pypi.org，在首页搜索所需库，例如jieba，找到后按照提示进行安装即可。 2、 搜索关键词jieba，进入首个结果页面 ...

Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...

Is innovation inherently a hit-or-miss endeavor? Not if you understand why customers make the choices they do. by Clayton M. Christensen, Taddy Hall, Karen Dillon and David S. Duncan For as long as we ...