https://www.python.org/downloads/release/python-3116/ https://github.com/python/cpython/blob/3.11/README.rst https://devguide.python.org/getting-started/setup-building/#build-dependencies
sudo apt install build-essential zlib1g-dev libncurses5-dev libgdbm-dev libnss3-dev
# with all optional modules :
sudo apt-get install build-essential gdb lcov pkg-config \
libbz2-dev libffi-dev libgdbm-dev libgdbm-compat-dev liblzma-dev \
libncurses5-dev libreadline6-dev libsqlite3-dev libssl-dev \
lzma lzma-dev tk-dev uuid-dev zlib1g-dev
wget https://www.python.org/ftp/python/3.11.6/Python-3.11.6.tgz
tar -xzf Python-3.11.6.tgz
cd Python-3.11.6/
./configure --enable-optimizations
sudo make altinstall
# takes a very long time
sudo rm /usr/bin/python3
sudo ln -s /usr/local/bin/python3.11 /usr/bin/python3
sudo ln -s /usr/local/bin/pip3.11 /usr/bin/pip3
sudo ln -s /usr/bin/pip3 /usr/bin/pip
$ which python
/usr/bin/python
$ python --version
Python 3.11.6
$ python3 --version
Python 3.11.6
$ pip --version
pip 23.2.1 from /usr/local/lib/python3.11/site-packages/pip (python 3.11)
$ pip3 --version
pip 23.2.1 from /usr/local/lib/python3.11/site-packages/pip (python 3.11)
$ ls -l /usr/local/bin/
total 23388
-rwxr-xr-x 1 root root 102 Oct 7 17:45 2to3-3.11
-rwxr-xr-x 1 root root 100 Oct 7 17:45 idle3.11
-rwxr-xr-x 1 root root 230 Oct 7 17:46 pip3.11
-rwxr-xr-x 1 root root 85 Oct 7 17:45 pydoc3.11
-rwxr-xr-x 1 root root 23928348 Oct 7 17:10 python3.11
-rwxr-xr-x 1 root root 3053 Oct 7 17:45 python3.11-config
francois@pi40:~/Python-3.11.6 $
francois@pi40:~/Python-3.11.6 $ ls -ld /usr/bin/py*
-rwxr-xr-x 1 root root 7806 Apr 5 2021 /usr/bin/py3clean
-rwxr-xr-x 1 root root 13184 Apr 5 2021 /usr/bin/py3compile
lrwxrwxrwx 1 root root 31 Apr 5 2021 /usr/bin/py3versions -> ../share/python3/py3versions.py
lrwxrwxrwx 1 root root 8 Apr 5 2021 /usr/bin/pydoc3 -> pydoc3.9
-rwxr-xr-x 1 root root 78 Mar 12 2021 /usr/bin/pydoc3.9
lrwxrwxrwx 1 root root 12 Apr 5 2021 /usr/bin/pygettext3 -> pygettext3.9
-rwxr-xr-x 1 root root 21537 Feb 19 2021 /usr/bin/pygettext3.9
lrwxrwxrwx 1 root root 7 Mar 2 2021 /usr/bin/python -> python3
lrwxrwxrwx 1 root root 9 Apr 5 2021 /usr/bin/python3 -> python3.9
-rwxr-xr-x 1 root root 4703672 Mar 12 2021 /usr/bin/python3.9
109 sudo rm /usr/bin/python3 110 sudo ln -s /usr/local/bin/python3.11 /usr/bin/python3 115 sudo ln -s /usr/local/bin/pip3.11 /usr/bin/pip3 116 sudo ln -s /usr/bin/pip3 /usr/bin/pip