Trying to update from Python3.9 to 3.11 using apt get or apt install proved
to be a pain in the ass because of gpg keyring, apt add-key deprecated.
Turns out installing from source is much easier though it takes a considerably longer time to compile and install.
I followed the steps from [1] which I have copied here
sudo apt-get update
sudo apt-get install gdebi-core
sudo apt-get install \
curl \
gcc \
libbz2-dev \
libev-dev \
libffi-dev \
libgdbm-dev \
liblzma-dev \
libncurses-dev \
libreadline-dev \
libsqlite3-dev \
libssl-dev \
make \
tk-dev \
wget \
zlib1g-dev
export PYTHON_VERSION=3.11.7
export PYTHON_MAJOR=3
curl -O https://www.python.org/ftp/python/${PYTHON_VERSION}/Python-${PYTHON_VERSION}.tgz
tar -xvzf Python-${PYTHON_VERSION}.tgz
cd Python-${PYTHON_VERSION}
./configure \
--prefix=/opt/python/${PYTHON_VERSION} \
--enable-shared \
--enable-optimizations \
--enable-ipv6 \
LDFLAGS=-Wl,-rpath=/opt/python/${PYTHON_VERSION}/lib,--disable-new-dtags
make
sudo make install
Find out where the current python binary is at with
which python3
Navigate to the output, delete the symbolic links to the old version.
Create new symbolic links to the newly installed version. New version was installed
in /opt/python/3.11.7