如何在Raspberry Pi中更改默认的python版本 [英] How to change the default python version in Raspberry Pi

问题描述

一天前，我重新安装了Raspberry Pi OS Buster，然后按照本教程在Raspberry pi中安装了Python3.8. https://installvirtual.com/how-to-install-python-3-8-on-raspberry-pi-raspbian/

One day ago I did a fresh installation of Raspberry Pi OS Buster and after that I installed Python3.8 in my Raspberry pi following this tutorial. https://installvirtual.com/how-to-install-python-3-8-on-raspberry-pi-raspbian/

我在bashrc中添加了python别名.

I added python alias to bashrc.

echo "alias python=/usr/local/bin/python3.8" >> ~/.bashrc
source ~/.bashrc

现在在终端中键入 python ，显示 Python 3.8.0(默认值，2020年6月8日，13:17:16)

Now typing python in terminal showing Python 3.8.0 (default, Jun 8 2020, 13:17:16)

但是当我运行python3时，它显示的是Python Python 3.7.3

But when I run python3 it's showing Python Python 3.7.3

我在上面的命令中添加了指向python3.8的python3别名，但还是没有运气.来自Geany的程序仍显示3.7.我将Geany的bulid命令更改为python(因为我将默认python设置为3.8)

I added python3 alias pointing to python3.8 follwing above commands but still no luck. Programs from Geany still showing 3.7. I changed Geany's bulid commands to python(as I set default python to 3.8)

#!/usr/local/bin/python3.8

import sys
print("Python version")
print (sys.version)

Python版本3.7.3(默认，2019年12月20日，18:57:59)

Python version 3.7.3 (default, Dec 20 2019, 18:57:59)

我有两个问题:

1. 如何在Python3.8中运行程序?

1. How to run programs in Python3.8?

我可以卸载python3.7吗?

Can I uninstall python3.7?

推荐答案

对于那些喜欢直接使用文件系统的人，这是我所做的:

For those of you who like working directly with the filesystem, here is what I did:

• 类型:sudo rm/usr/bin/python
• 类型:sudo ln -s/usr/bin/python3/usr/bin/python
• 类型:ls -l/usr/bin/python
  • lrwxrwxrwx 1根根18 Jan 18 11:04/usr/bin/python->/usr/bin/python3
  • Python 3.7.3
  • 类型:sudo update-alternatives --config python
  • 就我而言，找不到其他选择...

  在处理过程中，将pip默认值更改为pip3，过程略有不同...

  While you are at it, change pip default to pip3, slightly different process...

  • 类型:sudo mv/usr/bin/pip/usr/bin/pip2#重命名
  • 类型:sudo ln -s/usr/bin/pip3/usr/bin/pip
  • 类型:ls -l/usr/bin/pip
    • lrwxrwxrwx 1根根18 Jan 18 11:19/usr/bin/pip->/usr/bin/pip3
    • /usr/lib/python3/dist-packages/pip(python 3.7)中的pip 18.1
    • 注意:切换到默认的python3会使pip2感到困惑，因为它以#！/usr/bin/python
    开头

    这篇关于如何在Raspberry Pi中更改默认的python版本的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！