如何解除python3.5并重新安装python3.7

Question

I am on a google compute engine Debian instance. It currently has python3.5 but not python3.7. How would I uninstall python3.5 and re-install python3.7? Here is an example:

david@instance-py3:~$ python3
Python 3.5.3 (default, Jan 19 2017, 14:11:04) 
[GCC 6.3.0 20170118] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> 
david@instance-py3:~$ python3.7
-bash: python3.7: command not found

I don't want to have both, but uninstall python3.5 before proceeding.

Answer 1

This answer follow this link

1. You need to download python 3.7 first (example: You download to /usr/src/). Click here to download

2. Then install prerequisites:

sudo apt-get install build-essential checkinstall

sudo apt-get install libreadline-gplv2-dev libncursesw5-dev libssl-dev libsqlite3-dev tk-dev libgdbm-dev libc6-dev libbz2-dev

3. Extract:

cd /usr/src

sudo tar xzf Python-3.7.0.tgz

4. Compile:

cd Python-3.7.0

sudo ./configure --enable-optimizations

sudo make altinstall

That's it.

Answer 2

Give this a try. Caveat: I don't have Debian instance to try it out. Comment whether this works or not.

To uninstall Python 3.5:

sudo apt-get remove python3

To install Python 3.7:

sudo apt install python3.7

Debian Python 3.7 packages here