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Updating Python in Windows Updating to a new Python version is easy on a computer running Windows. All you have to do is visit the Python downloads page and download the latest version. Clicking on the button will replace the existing version of Python with the new version.
x.y to 3. x.z (patch) Python version, just go to Python downloads page get the latest version and start the installation. Since you already have Python installed on your machine installer will prompt you for "Upgrade Now". Click on that button and it will replace the existing version with a new one.
Try this if you are on ubuntu:
sudo apt-get update
sudo apt-get install build-essential libpq-dev libssl-dev openssl libffi-dev zlib1g-dev
sudo apt-get install python3-pip python3.7-dev
sudo apt-get install python3.7
In case you don't have the repository and so it fires a not-found package you first have to install this:
sudo apt-get install -y software-properties-common
sudo add-apt-repository ppa:deadsnakes/ppa
sudo apt-get update
more info here: http://devopspy.com/python/install-python-3-6-ubuntu-lts/
On ubuntu you can add this PPA Repository and use it to install python 3.7: https://launchpad.net/~jonathonf/+archive/ubuntu/python-3.7
Or a different PPA that provides several Python versions is Deadsnakes: https://launchpad.net/~deadsnakes/+archive/ubuntu/ppa
See also here: https://askubuntu.com/questions/865554/how-do-i-install-python-3-6-using-apt-get (I know it says 3.6 in the url, but the deadsnakes ppa also contains 3.7 so you can use it for 3.7 just the same)
If you want "official" you'd have to install it from the sources from the site, get the code (which you already downloaded) and do this:
tar -xf Python-3.7.0.tar.xz
cd Python-3.7.0
./configure
make
sudo make install <-- sudo is required.
This might take a while
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