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  • mac命令行切换python版本

    brew安装anaconda3

    brew cask install anaconda3
    

    安装之后打开路径查看:/usr/local/anaconda3/bin


    anaconda3环境变量设置

    vim ~/.zshrc
    
    export PATH=/usr/local/anaconda3/bin:$PATH
    
    source ~/.zshrc
    

    验证

    conda --version
    # 看到版本好就成功了
    

    安装双版本

    conda create --name python2 python=2.7
    
    conda create --name python3 python=3.7
    

    查看目录 /usr/local/anaconda3/envs/


    命令后切换python环境

    # 查看本地的py环境
    ➜  ~ conda info -e
    # conda environments:
    #
    base                  *  /usr/local/anaconda3
    python2                  /usr/local/anaconda3/envs/python2
    python27                 /usr/local/anaconda3/envs/python27
    python3                  /usr/local/anaconda3/envs/python3
    
    # 进入py版本
    ➜  ~ source activate python27
    (python27) ➜  ~
    
    # 退出py版本
    conda deactivate
    

    pip

    进入py版本之后,有时候不知道pip把安装包安装到哪里了,用这个方法很好使:

    (python27) ➜  ~ python
    Python 2.7.18 |Anaconda, Inc.| (default, Apr 23 2020, 17:44:47)
    [GCC 4.2.1 Compatible Clang 4.0.1 (tags/RELEASE_401/final)] on darwin
    Type "help", "copyright", "credits" or "license" for more information.
    
    >>> import requests
    >>> requests
    <module 'requests' from '/usr/local/anaconda3/envs/python27/lib/python2.7/site-packages/requests/__init__.pyc'>
    
    
    

    /usr/local/anaconda3/envs/python27/lib/python2.7/site-packages/requests/ 就是了。


    ide vscode set


    参考

    https://www.cnblogs.com/zhoulin1234/p/9893055.html
    https://blog.csdn.net/ninnyyan/article/details/80485507

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  • 原文地址:https://www.cnblogs.com/mysticbinary/p/12829569.html
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