Etl post type hint docs

BritishGeologicalSurvey / etlhelper

ETL Helper is a Python ETL library to simplify data transfer into and out of databases.

https://britishgeologicalsurvey.github.io/etlhelper/

GNU Lesser General Public License v3.0

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Etl post type hint docs #187

Closed ximenesuk closed 11 months ago

ximenesuk commented 11 months ago

This small PR updates the docstrings in etl.py to reflect the use of type hints. It cherry-picks e6d600d, to reuse the work done by @leorudczenko, and then modifies that commit to reflect code and type hint changes.