What's new in 1.4.1 (February ??, 2022)

These are the changes in pandas 1.4.1. See :ref:`release` for a full changelog including other versions of pandas.

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Fixed regressions

Regression in :meth:`Series.mask` with inplace=True and PeriodDtype and an incompatible other coercing to a common dtype instead of raising (:issue:`45546`)

Bug fixes

Fixed segfault in :meth:DataFrame.to_json when dumping tz-aware datetimes in Python 3.10 (:issue:`42130`)
Bug in :meth:`api.types.is_bool_dtype` was raising an AttributeError when evaluating a categorical Series (:issue:`45615`)

Other

Contributors

.. contributors:: v1.4.0..v1.4.1|HEAD