Some are available only in 64-bit versions. 64-bit applications don’t have this limit, hence many data analysis and machine learning tools for Python work best in 64-bit incarnations. 32-bit Python, and 32-bit apps generally, can access only 4GB of memory at a time.Windows users can run 32-bit editions of Python on 64-bit Windows, but at a slight cost of performance. Most modern operating systems use a 64-bit edition of Python by default.The most likely answer is 64-bit, for the following reasons: One key choice you’ll need to make, especially on Windows, is whether to use the 32-bit or 64-bit version of Python. (You might want to investigate other Python distributions later, since they address specific use cases you might have, but we won’t consider them here.) Again, this is the safest and most broadly compatible distribution, the one nobody gets fired for picking. Unlike Linux, though, Python offers one, gold-standard, “official” edition you can always fall back on: CPython, the version provided by the Python Software Foundation at. Python also comes in a variety of distributions, in much the same way Linux does. You can always try out the most recent version of Python in a controlled way - e.g., in a VM or a test machine - but going one version back guarantees the best compatibility with common third-party Python packages. The safe bet, then, is to use the latest update of Python 3.7 (in this case, Python 3.7.6). Removing the default python version may break your system.At the time of this writing, Python 3.8.1 is the most current version. Warning: Do not remove the default version of Python(3.x) which was preinstalled in Ubuntu, even if you install Python 3.9. When you use anything that specifically requires Python 3.9, be sure to use python3.9 as the command, not python or python3. Confirm that the installation was successful:.Sudo add-apt-repository ppa:deadsnakes/ppa

The PPA you'll need to add is maintained by 'deadsnakes', so let's add that:.

Sudo apt install software-properties-common

Update apt and confirm that you have the prerequisites installed:.

Open Terminal (if it's not already open).Instead, there is a PPA that you'll need to add to apt so that you can use 3.9. As you're 'new to Linux', I won't suggest compiling from source.

Ubuntu install python 3.9