CleverCSV is a Python package for handling messy CSV files. It provides a drop-in replacement for the builtin CSV module with improved dialect detection, and comes with a handy command line application for working with CSV files.
This PR adds type hints to CleverCSV and enables static type checking with MyPy. An attempt was made to keep the changes minimal, in order to change only the code needed to get MyPy to pass. As can be seen, this already required a large number of changes to the code. It is also clear that certain design decisions could be reevaluated to make the type checking smoother (e.g., requiring @overload is not ideal). Such improvements are left for future work.
This PR adds type hints to CleverCSV and enables static type checking with MyPy. An attempt was made to keep the changes minimal, in order to change only the code needed to get MyPy to pass. As can be seen, this already required a large number of changes to the code. It is also clear that certain design decisions could be reevaluated to make the type checking smoother (e.g., requiring
@overloadis not ideal). Such improvements are left for future work.