in 1.4.4 (August 31, 2022) These are the changes in pandas 1.4.4. See Release notes for a full changelog including other versions of pandas. Fixed regressions • Fixed regression in DataFrame.fillna() 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 new in 1.4.2 (April 2, 2022) These are the changes in pandas 1.4.2. See Release notes for a full changelog including other versions of pandas. Fixed regressions • Fixed regression in DataFrame.drop() and

1 What’s new in 1.5.0 (??) These are the changes in pandas 1.5.0. See Release notes for a full changelog including other versions of pandas. Enhancements pandas-stubs The pandas-stubs library is now new in 1.4.4 (July ??, 2022) These are the changes in pandas 1.4.4. See Release notes for a full changelog including other versions of pandas. Fixed regressions • Fixed regression in DataFrame.fillna() 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

new in 1.4.2 (April 2, 2022) These are the changes in pandas 1.4.2. See Release notes for a full changelog including other versions of pandas. Fixed regressions • Fixed regression in DataFrame.drop() and 1.4.1 (February 12, 2022) These are the changes in pandas 1.4.1. See Release notes for a full changelog including other versions of pandas. 2856 Chapter 5. Release notes pandas: powerful Python data in 1.4.0 (January 22, 2022) These are the changes in pandas 1.4.0. See Release notes for a full changelog including other versions of pandas. Enhancements Improved warning messages Previously, warning

in 1.3.4 (October 17, 2021) These are the changes in pandas 1.3.4. See Release notes for a full changelog including other versions of pandas. Fixed regressions • Fixed regression in DataFrame.convert_dtypes() 1.3.3 (September 12, 2021) These are the changes in pandas 1.3.3. See Release notes for a full changelog including other versions of pandas. Fixed regressions • Fixed regression in DataFrame constructor in 1.3.2 (August 15, 2021) These are the changes in pandas 1.3.2. See Release notes for a full changelog including other versions of pandas. Fixed regressions • Performance regression in DataFrame.isin()

1.3.3 (September 12, 2021) These are the changes in pandas 1.3.3. See Release notes for a full changelog including other versions of pandas. Fixed regressions • Fixed regression in DataFrame constructor in 1.3.2 (August 15, 2021) These are the changes in pandas 1.3.2. See Release notes for a full changelog including other versions of pandas. Fixed regressions • Performance regression in DataFrame.isin() new in 1.3.1 (July 25, 2021) These are the changes in pandas 1.3.1. See Release notes for a full changelog including other versions of pandas. Fixed regressions • Pandas could not be built on PyPy (GH42355)

in 1.3.2 (August 15, 2021) These are the changes in pandas 1.3.2. See Release notes for a full changelog including other versions of pandas. Fixed regressions • Performance regression in DataFrame.isin() new in 1.3.1 (July 25, 2021) These are the changes in pandas 1.3.1. See Release notes for a full changelog including other versions of pandas. 2684 Chapter 5. Release notes pandas: powerful Python data new in 1.3.0 (July 2, 2021) These are the changes in pandas 1.3.0. See Release notes for a full changelog including other versions of pandas. Warning: When reading new Excel 2007+ (.xlsx) files, the default

in 1.2.3 (March 02, 2021) These are the changes in pandas 1.2.3. See Release notes for a full changelog including other versions of pandas. Fixed regressions • Fixed regression in to_excel() raising 1.2.2 (February 09, 2021) These are the changes in pandas 1.2.2. See Release notes for a full changelog including other versions of pandas. Fixed regressions • Fixed regression in read_excel() that in 1.2.1 (January 20, 2021) These are the changes in pandas 1.2.1. See Release notes for a full changelog including other versions of pandas. Fixed regressions • Fixed regression in to_csv() that created

1.2.0 (December 26, 2020) These are the changes in pandas 1.2.0. See Release notes for a full changelog including other versions of pandas. Warning: The xlwt package for writing old-style .xls excel 1.1.5 (December 07, 2020) These are the changes in pandas 1.1.5. See Release notes for a full changelog including other versions of pandas. Fixed regressions • Fixed regression in addition of a timedelta-like in 1.1.4 (October 30, 2020) These are the changes in pandas 1.1.4. See Release notes for a full changelog including other versions of pandas. Fixed regressions • Fixed regression in read_csv() raising

in 1.1.1 (August 20, 2020) These are the changes in pandas 1.1.1. See Release notes for a full changelog including other versions of pandas. Fixed regressions • Fixed regression in CategoricalIndex.format() new in 1.1.0 (July 28, 2020) These are the changes in pandas 1.1.0. See Release notes for a full changelog including other versions of pandas. Enhancements KeyErrors raised by loc specify missing labels new in 1.0.5 (June 17, 2020) These are the changes in pandas 1.0.5. See Release notes for a full changelog including other versions of pandas. 5.2. Version 1.0 2533 pandas: powerful Python data analysis

new in 1.1.0 (July 28, 2020) These are the changes in pandas 1.1.0. See Release notes for a full changelog including other versions of pandas. Enhancements KeyErrors raised by loc specify missing labels new in 1.0.5 (June 17, 2020) These are the changes in pandas 1.0.5. See Release notes for a full changelog including other versions of pandas. 5.2. Version 1.0 2531 pandas: powerful Python data analysis new in 1.0.4 (May 28, 2020) These are the changes in pandas 1.0.4. See Release notes for a full changelog including other versions of pandas. Fixed regressions • Fix regression where Series.isna() and