如何在google Colab中使用python 3.6

Question

我想使用python 3.6由于一些文件兼容性问题，谁能帮助我，在那里我可以使用python 3.6在谷歌Colab，除了我想使用tensorflow 2.0和opencv 4.0.0.21，我已经安装在Colab我只坚持python 3.6。如有任何帮助，不胜感激

Answer 1

# first install python 3.6
!sudo apt-get update -y
!sudo apt-get install python3.6
# change alternatives
!sudo update-alternatives --install /usr/bin/python3 python3 /usr/bin/python3.6 1
# select python version
!sudo update-alternatives --config python3
# check python version
!python --version
# install pip for new python 
!sudo apt-get install python3.6-distutils
!wget https://bootstrap.pypa.io/get-pip.py
!python get-pip.py
# upgrade pip
!sudo apt install python3-pip
!python -m pip install --upgrade pip

Answer 2

您可以使用下面的命令，然后选择备选版本来更改python版本。

!sudo update-alternatives --config python3

输出:

There are 2 choices for the alternative python3 (providing /usr/bin/python3).
Selection    Path                Priority   Status
------------------------------------------------------------
* 0            /usr/bin/python3.7   2         auto mode
1            /usr/bin/python3.6   1         manual mode
2            /usr/bin/python3.7   2         manual mode
Press <enter> to keep the current choice[*], or type selection number: 1
update-alternatives: using /usr/bin/python3.6 to provide /usr/bin/python3 (python3) in manual mode 

使用以下代码检查python版本。

python --version # 3.6.9