Install the required dependencies to compile the Python source code.
$ apt-get install wget build-essential libreadline-gplv2-dev libncursesw5-dev libssl-dev libsqlite3-dev tk-dev libgdbm-dev libc6-dev libbz2-dev libffi-dev zlib1g-dev liblzma-dev -y
Visit Python's Source Code Download page to find the latest gzipped source release. Replace the URLs and filenames in this guide with the latest version.
Download the latest Python3 source code.
$ wget https://www.python.org/ftp/python/3.9.6/Python-3.9.6.tgz
Extract the downloaded python source code archive.
$ tar xzf Python-3.9.6.tgz
Compile the python source code.
$ cd Python-3.9.6 && ./configure --enable-optimizations
Install Python.
$ make altinstall
Check the name of your new Python executable.
$ ls /usr/local/bin/python*
Set the new Python executable as default. Replace the two instances of /python3.9 in the following command with the name of your new Python executable.
$ update-alternatives --install /usr/bin/python python /usr/local/bin/python3.9 1
Update Pip
Update pip. Use the name of your new Python executable in the following command.
$ /usr/local/bin/python3.9 -m pip install --upgrade pip
Check the name of your new pip executable.
$ ls /usr/local/bin/pip*
Set the new pip as the default. Use the name of your new pip executable in the following command.
$ update-alternatives --install /usr/bin/pip pip /usr/local/bin/pip3.9 1
Check the current version of Python and pip.
$ python -V && pip -V
You will see something like this:
Python 3.9.6
pip 21.2.3 from /usr/local/lib/python3.9/site-packages/pip (python 3.9)