Functions and Classes in Python

Solutions

!pytest mypkg -m "critical"

============================= test session starts ==============================
platform linux -- Python 3.6.3, pytest-3.3.1, py-1.5.0, pluggy-0.6.0
rootdir: /home/lester/Code/siremol.org/chryswoods.com/python_and_data/testing, inifile:
collected 17 items                                                             
mypkg/test/test_mymath.py ....                                           [100%]
============================= 13 tests deselected ==============================
=================== 4 passed, 13 deselected in 0.02 seconds ====================