What’s new in 1.4.3 (June 23, 2022)#

These are the changes in pandas 1.4.3. See Release notes for a full changelog including other versions of pandas.

Behavior of concat with empty or all-NA DataFrame columns#

The behavior change in version 1.4.0 to stop ignoring the data type of empty or all-NA columns with float or object dtype in concat() (Ignoring dtypes in concat with empty or all-NA columns) has been reverted (GH 45637).

Fixed regressions#

Bug fixes#


  • The minimum version of Cython needed to compile pandas is now 0.29.30 (GH 41935)


A total of 18 people contributed patches to this release. People with a “+” by their names contributed a patch for the first time.

  • Alex-Blade +

  • Andrew Hawyrluk

  • JHM Darbyshire

  • Jeff Reback

  • Joris Van den Bossche

  • Marc Garcia

  • Marco Edward Gorelli

  • Matthew Roeschke

  • MeeseeksMachine

  • Pandas Development Team

  • Patrick Hoefler

  • Richard Shadrach

  • Robert de Vries

  • Simon Hawkins

  • Thomas Li

  • Tim Swast

  • Wenjun Si

  • Yuanhao Geng