TYP: Fix mypy ignores in parsers
- [x] Ensure all linting tests pass, see [here](https://pandas.pydata.org/pandas-docs/dev/development/contributing.html#code-standards) for how to run them

Tried fixing the Mypy Errors in parsers

can you merge master Done

@simonjayhawkins Is it ok to use the | syntax? quick comment on the `|` syntax - this is in the pyupgrade roadmap (https://github.com/asottile/pyupgrade/issues/372) Hello @phofl! Thanks for updating this PR. We checked the lines you've touched for [PEP 8](https://www.python.org/dev/peps/pep-0008) issues, and found:









There are currently no PEP 8 issues detected in this Pull Request. Cheers! :beers: 

##### Comment last updated at 2021-02-03 18:52:52 UTC ping @simonjayhawkins  thanks @phofl 