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UDST / urbansim

Platform for building statistical models of cities and regions
https://udst.github.io/urbansim/
BSD 3-Clause "New" or "Revised" License
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Deprecation in yaml conversion #230

Open smmaurer opened 3 years ago

smmaurer commented 3 years ago

In Pandas 1.2+, pandas.Index.to_native_types() is deprecated, raising warnings like the following:

Screen_Shot_2021-02-09_at_11 52 05_AM1

This comes up in code that serializes data to yaml for storage and later reloading.

urbansim/utils/yamlio.py#L48

The replacement suggested in the message doesn't sound as general-purpose, but maybe it would work if Pandas is able to convert string representations of ints and floats back to the appropriate data type. Another option could be to use to_json().

pandas.Index.to_native_types() pandas.Series.astype() pandas.Series.to_json()

mbarison commented 1 year ago

I can confirm this is definitively broken with Pandas 2.0.0. The workaround is to replace pandas.Index.to_native_types() with pandas.Index.format()