title: How to get rid of pytest warnings
body: <p>When I run my pytest in pipenv shell I get this:</p>
  <pre class="lang-sh prettyprint-override"><code> pipenv shell
  Loading .env environment variables…
  Launching subshell in virtual environment…
  
  The default interactive shell is now zsh.
  To update your account to use zsh, please run `chsh -s /bin/zsh`.
  For more details, please visit https://support.apple.com/kb/HT208050.
  bash-3.2$  . /Users/.../.local/share/virtualenvs/kittycapital-UOiJxZhy/bin/activate
  (kittycapital) bash-3.2$ python -m pytest
  ============================================================================================================================= test session starts ==============================================================================================================================
  platform darwin -- Python 3.7.7, pytest-5.4.3, py-1.9.0, pluggy-0.13.1
  rootdir: /Users/.../kittycapital
  plugins: mock-3.1.1
  collected 4 items
  
  tests/test_account.py .                                                                                                                                                                                                                                                  [ 25%]
  tests/test_pair.py ..                                                                                                                                                                                                                                                    [ 75%]
  tests/helpers/test_number_helpers.py .                                                                                                                                                                                                                                   [100%]
  
  =============================================================================================================================== warnings summary ===============================================================================================================================
  /Users/.../.local/share/virtualenvs/kittycapital-UOiJxZhy/lib/python3.7/site-packages/urllib3/util/selectors.py:14
    /Users/.../.local/share/virtualenvs/kittycapital-UOiJxZhy/lib/python3.7/site-packages/urllib3/util/selectors.py:14: DeprecationWarning: Using or importing the ABCs from 'collections' instead of from 'collections.abc' is deprecated since Python 3.3,and in 3.9 it will stop working
      from collections import namedtuple, Mapping
  
  /Users/.../.local/share/virtualenvs/kittycapital-UOiJxZhy/lib/python3.7/site-packages/urllib3/_collections.py:2
    /Users/.../.local/share/virtualenvs/kittycapital-UOiJxZhy/lib/python3.7/site-packages/urllib3/_collections.py:2: DeprecationWarning: Using or importing the ABCs from 'collections' instead of from 'collections.abc' is deprecated since Python 3.3,and in 3.9 it will stop working
      from collections import Mapping, MutableMapping
  
  -- Docs: https://docs.pytest.org/en/latest/warnings.html
  </code></pre>
  <p>How do I get rid of these warnings?</p>