Python里xlwt,xlrd模块安装出现:You are using pip version 9.0.1, however version 19.0.3 is available. You sho

今天在pycharm准备使用xlwt,xlrd模块,cmd安装python xlwt出现如下信息:python You are using pip version 9.0.1, however version 19.0.3 is available. You should consider upgrading via the 'python -m pip install --upgrade pip
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