Environment for Python 3

[thezrail]

I gave up from the beginning
couldn't create the environment with
this >>

$ virtualenv venv
$ source venv/bin/activate
$ pip install flask flask-jsonpify flask-sqlalchemy flask-restful
$ pip freeze

I would like to continue with the API tutorial if i could do that in python 3
I downloaded flask with pip flask and pip freeze in the terminal already those worked out