Pyenv is correctly configured but it doesn't start the desired python version

[epris]

Dear all,

I have installed pyenv by following the instructions reported on the main page.
If I execute
pyenv versions
I obtain the following result

system
* 3.7.7 (set by PYENV_VERSION environment variable)

But If i execute
$ python --version
the response is
Python 2.7.18

I have tried to execute both pyenv global 3.7.7 and pyenv local 3.7.7 but If I write python3, the 2.7.18 version is started.
I'm using Ubuntu.
The PATH variable is set as shown in your tutorial.

What is wrong?

Best

[native-api]

Most probably, you didn't restart your login session after installing thus have no shims in your PATH.
In #2085, lifting the restart requirement is being discussed.