Python的虚拟环境的安装与配置(virtualenv)

win+r 打开cmd

pip install virtualenv

如下():

Microsoft Windows [版本 10.0.16299.492](c) 2017 Microsoft Corporation。保留所有权利。C:\Users\Administrator>pip install virtualenvRequirement already satisfied: virtualenv in c:\anaconda3\lib\site-packages (16.0.0)notebook 5.4.0 requires ipykernel, which is not installed.jupyter 1.0.0 requires ipykernel, which is not installed.jupyter-console 5.2.0 requires ipykernel, which is not installed.ipywidgets 7.1.1 requires ipykernel>=4.5.1, which is not installed.C:\Users\Administrator>

安装虚拟环境管理包():

详细方法()

pip install virtualenvwrapper win

如下:

C:\Users\Administrator>pip install virtualenvwrapper winRequirement already satisfied: virtualenvwrapper in c:\anaconda3\lib\site-packages (4.8.2)Collecting win  Could not find a version that satisfies the requirement win (from versions: )No matching distribution found for winC:\Users\Administrator>

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新建如下图:

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然后确定保存,

然后如下:

C:\Users\Administrator>workonPass a name to activate one of the following virtualenvs:==============================================================================blogproject_envmxonlinepython2python3C:\Users\Administrator>

创建虚拟环境

创建一个py3scrapy虚拟环境

C:\Users\Administrator>mkvirtualenv py3scrapyUsing base prefix 'c:\\anaconda3'New python executable in E:\Evns\py3scrapy\Scripts\python.exeInstalling setuptools, pip, wheel...done.(py3scrapy) C:\Users\Administrator>

然后在E:\Evns目录能看到所创建的虚拟环境:

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