11:20 $ python3.7 -Wall 
Python 3.7.0b2+ (heads/3.7:3b4c6b16c5, Mar 22 2018, 23:55:22) 
[GCC 6.3.0 20170516] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import  pytest
/home/irmen/.local/lib/python3.7/site-packages/_pytest/assertion/util.py:8: DeprecationWarning: Using or importing the ABCs from 'collections' instead of from 'collections.abc' is deprecated, and in 3.8 it will stop working
  from collections import Sequence
/home/irmen/.local/lib/python3.7/site-packages/_pytest/assertion/rewrite.py:6: DeprecationWarning: the imp module is deprecated in favour of importlib; see the module's documentation for alternative uses
  import imp
/home/irmen/.local/lib/python3.7/site-packages/_pytest/mark/structures.py:1: DeprecationWarning: Using or importing the ABCs from 'collections' instead of from 'collections.abc' is deprecated, and in 3.8 it will stop working
  from collections import namedtuple, MutableMapping as MappingMixin
>>> pytest.__version__
'3.5.0'
>>>