terminal - Py.test command not found, but library is installed

Question

There are already two posts on stack overflow on this topic; however, none of them have resolved or addressed my specific situation.

I have installed pytest via pip install pytest. I am able to import the library in Python as well.

The problem is that when I try to use the py.test command in Terminal, I get py.test: command not found.

Does anyone have any insight as to why I am not able to use the command in the terminal?

EDIT: It even shows up as an installed package:

$ pip list
cycler (0.9.0)
matplotlib (1.5.1)
numpy (1.10.1)
pip (8.1.0)
py (1.4.31)
pyparsing (2.0.7)
pytest (2.9.0)
python-dateutil (2.4.2)
pytz (2015.7)
scipy (0.17.0)
setuptools (7.0)
six (1.10.0)
tensorflow (0.5.0)
vboxapi (1.0)
wheel (0.26.0)

Answer 1

using python -m pytest will work for you.

Or if you using virtual environment and installed pytest on virtualenv you should then run py.test alongside your virtual environment.

Check this website can be useful:http://pythontesting.net/framework/pytest/pytest-introduction/