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【安装】最好增加创建虚拟环境,否则会覆盖本地的版本 #6

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Valuebai opened this issue Feb 11, 2020 · 0 comments

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@Valuebai
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赞一个,学习下老哥的代码

Ptyhon创建虚拟环境

方法一:自带命令

  1. 进入文件夹目录
  2. python -m venv -h 可查看帮助信息
  3. 下面的
Linux运行命令行
$ 创建默认环境:python3 -m venv my_venv 
$ 创建指定环境:python3.6 -m venv  my_venv,  python2 -m venv  my_venv(添加到系统环境变量中)
$ 激活环境:. my_venv/bin/activate  (. 或者 source )
$ 退出环境:deactivate 

Windows系统运行cmd,使用 "py" Python 启动器命令配合 "-m" 开关选项:
$ 创建环境:py -3 -m venv my_venv (或者python -m venv my_venv)
$ 创建指定环境:py -3.6 -m venv my_venv,  py -3.7 -m venv my_venv (添加到系统环境变量中)
$ 激活环境:my_venv\Scripts\activate.bat
$ 退出环境:deactivate

执行后,会在目录前方出现<my_venv>表明已进入虚拟环境

安装项目:
$ pip install -r requirements.txt
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