Python 3 default on Ubuntu?

Question

Python

How to make python3 default in ubuntu 16.04?

Answer 1

Look for how many scripts are tied to python2
Think about whether you want to rewrite them all to python3 before making python3 the default python
To use python3 in a script, it is enough to indicate in the shebang
In case of using frameworks or writing a project that has dependencies? create virtualenv
https://docs.python.org/3/library/venv.html

Answer 2

you can change the python symlink in the /usr/bin directory to point not to python2.7 but to python 3.x. True, I don’t know how this will affect the installed software that uses 2.7)))