Python3.6版本升级到Python3.7

逃离我推掉我的手 2022-12-14 15:51 1332阅读 0赞

目前python版本为python 3.6版本的想升级为python 3.7版本。  
参考文章[Windows anaconda 把python3.6升到3.7][Windows anaconda _python3.6_3.7]  
打开Anaconda Prompt中，输入：

conda update conda

发现报错了，如下：

(base) C:\Users\taohj>conda update conda
    Collecting package metadata (current_repodata.json): failed
    
    CondaHTTPError: HTTP 000 CONNECTION FAILED for url <http://mirros.tuna.tsinghua.edu.cn/pkgs/free/win-64/current_repodata.json>
    Elapsed: -
    
    An HTTP error occurred when trying to retrieve this URL.
    HTTP errors are often intermittent, and a simple retry will get you on your way.
    'http://mirros.tuna.tsinghua.edu.cn/pkgs/free/win-64'

搜了一下应该是数据源的问题，参考[Windows下Anaconda安装、换源与更新的方法][Windows_Anaconda]，和[1、【基础环境安装】conda httperror http none none for url none Anaconda更新失败解决办法][1_conda httperror http none none for url none Anaconda]  
然后按照上面的方法打开Anaconda Prompt，输入

conda config --add channels https://mirrors.ustc.edu.cn/anaconda/pkgs/free/
    conda config --set show_channel_urls yes

Anaconda更新也还是失败

看个帖子，问题是出在default channel上面。需要删掉channels下面的 -defaults一行。

怎么做那，就是打开C:\\Users\\condarc这个文件  
删除 -defaults这一行

修改后.condarc文件里应该是下面这样的内容

channels:
      - https://mirrors.ustc.edu.cn/anaconda/pkgs/free/
    show_channel_urls: true
    ssl_verify: false

后来搞了一夜，还没好，太慢了，又想了下感觉是数据源太慢，参考了一下啊这个帖子[pip或conda下载过慢解决办法（让你的pip install 达到2.2m/s的速度！）][pip_conda_pip install _2.2m_s]  
全部换成了上海交大源，修改anaconda下载源的配置文件" C:\\Users\\用户名.condarc"如下

channels:
      - https://mirrors.sjtug.sjtu.edu.cn/anaconda/pkgs/main/
      - https://mirrors.sjtug.sjtu.edu.cn/anaconda/pkgs/free/
      - https://mirrors.sjtug.sjtu.edu.cn/anaconda/cloud/conda-forge/
    show_channel_urls: true
    ssl_verify: false

接着打开 Anaconda Prompt，输入

conda update conda

很快就更新好了，接着输入

conda install python=3.7

好了之后，打开cmd，输入python，显示如下

Python 3.7.1 (v3.7.1:260ec2c36a, Oct 20 2018, 14:57:15) [MSC v.1915 64 bit (AMD64)] on win32
    Type "help", "copyright", "credits" or "license" for more information.
    >>>

应该是成功了

[Windows anaconda _python3.6_3.7]: https://blog.csdn.net/weixin_46021869/article/details/104486837?utm_medium=distribute.pc_relevant_t0.none-task-blog-BlogCommendFromMachineLearnPai2-1.channel_param&depth_1-utm_source=distribute.pc_relevant_t0.none-task-blog-BlogCommendFromMachineLearnPai2-1.channel_param
[Windows_Anaconda]: https://www.jb51.net/article/184947.htm
[1_conda httperror http none none for url none Anaconda]: https://www.jianshu.com/p/c74668743932
[pip_conda_pip install _2.2m_s]: https://blog.csdn.net/miracleoa/article/details/101228888?utm_medium=distribute.pc_relevant_t0.none-task-blog-BlogCommendFromMachineLearnPai2-1.channel_param&depth_1-utm_source=distribute.pc_relevant_t0.none-task-blog-BlogCommendFromMachineLearnPai2-1.channel_param