Python 3.5 not working in virtual environment?

Question

ubuntu

Hello, I installed python 3.5
the python3.5 command gives version 3.5
the python3 command gives version 3.4 I set up the
Flask application
I put an virtual environment inside the project

virtualenv -p python3.5 envname
source envname/bin/activate I
put the
pip install flask there,
but when I'm already on I print the version of python sys.version on the site, he writes 3.4
This sys.executable outputs this "/usr/bin/python3"
I understand that my project does not use a virtual environment?
How can I get him to start using it?

Answer 1

source /env/bin/activate

Answer 2

it's easier to work through
pyvenv-3.5 directory-to-work
also then through pip you put everything and control it (pip freeiz)
and the same source env-dir/bin/activate