About the default Python version of Ubuntu

Most Ubuntu system default Python versions are python2.x series, but the latest version is already 3.5 and 3.6, the software system follows the version always has a lot of benefits, so, the following is the author's experience in modifying the Ubantu default Python version:

1, terminal input: Python-v View the default version (generally python2.x series)

2, do not rush to download the python3.x version, the terminal type the following command

Whereis Python3

Look at the output, and if you already have it, you can skip the installation step, and the last few versions of Ubuntu basically have Python2 and 3 installed by default.

If not installed, sudo apt-get install Python3

3, after the system installed python3.5 version

(1) If you just call the interpreter temporarily, enter the corresponding version number in the terminal

(2) Modify the default Python interpreter (to establish a soft connection to python3.5, note that the path may be slightly different, I'm/usr/bin/python3.5 here, you can see the path you've installed in the results of Whereis Python3 above)

When the terminal enters Python, the python3.5 interpreter is called directly.

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About the default Python version of Ubuntu