What’s new in 0.25.0 (July 18, 2019) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2441 5.3 Version 0.24 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . mohanraj + • tadeja + • tamuhey + • thatneat • topper-123 • willweil + • yehia67 + • yhaque1213 + 5.3 Version 0.24 5.3.1 Whats new in 0.24.2 (March 12, 2019) Warning: The 0.24.x series of releases will regression in creating a period-dtype array from a read-only NumPy array of period objects. (GH25403) 5.3. Version 0.24 2483 pandas: powerful Python data analysis toolkit, Release 1.0.5 • Fixed regression

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 5.3 Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . the IPython completion mechanism so they can be tab-completed: In [5]: df.fo df.foo1 df.foo2 5.3 Panel Panel is a somewhat less-used, but still important container for 3-dimensional data. The term Out[333]: item1 item2 0 foo foo 1 bar bar 2 baz baz In [334]: panel[’b’] Out[334]: item1 item2 5.3. Panel 45 pandas: powerful Python data analysis toolkit, Release 0.7.3 0 -1.309989 -1.309989 1 -1

What’s new in 0.25.0 (July 18, 2019) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2436 5.3 Version 0.24 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . mohanraj + • tadeja + • tamuhey + • thatneat • topper-123 • willweil + • yehia67 + • yhaque1213 + 5.3 Version 0.24 5.3.1 Whats new in 0.24.2 (March 12, 2019) Warning: The 0.24.x series of releases will returning the size (GH25580) • Bug in resampling raising for nullable integer-dtype columns (GH25580) 5.3. Version 0.24 2475 pandas: powerful Python data analysis toolkit, Release 1.0.4 Contributors A total

What’s new in 1.2.0 (December 26, 2020) . . . . . . . . . . . . . . . . . . . . . . . . . . . 2733 5.3 Version 1.1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Lippai + 2762 Chapter 5. Release notes pandas: powerful Python data analysis toolkit, Release 1.3.2 5.3 Version 1.1 5.3.1 What’s new in 1.1.5 (December 07, 2020) These are the changes in pandas 1.1.5. considered a non-NA value (GH38286) Bug fixes • Bug in pytables methods in python 3.9 (GH38041) 5.3. Version 1.1 2763 pandas: powerful Python data analysis toolkit, Release 1.3.2 Other • Only set

What’s new in 1.2.0 (December 26, 2020) . . . . . . . . . . . . . . . . . . . . . . . . . . . 2812 5.3 Version 1.1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vineethraj510 + • vmdhhh + • xinrong-databricks + • yonas kassa + • yonashub + • Ádám Lippai + 5.3 Version 1.1 5.3.1 What’s new in 1.1.5 (December 07, 2020) These are the changes in pandas 1.1.5. regression in inplace operations on Series with ExtensionDtype with NumPy dtyped operand (GH37910) 5.3. Version 1.1 2841 pandas: powerful Python data analysis toolkit, Release 1.3.3 • Fixed regression

What’s new in 1.2.0 (December 26, 2020) . . . . . . . . . . . . . . . . . . . . . . . . . . . 2814 5.3 Version 1.1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vineethraj510 + • vmdhhh + • xinrong-databricks + • yonas kassa + • yonashub + • Ádám Lippai + 5.3 Version 1.1 5.3.1 What’s new in 1.1.5 (December 07, 2020) These are the changes in pandas 1.1.5. regression in inplace operations on Series with ExtensionDtype with NumPy dtyped operand (GH37910) 5.3. Version 1.1 2843 pandas: powerful Python data analysis toolkit, Release 1.3.4 • Fixed regression

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 5.3 Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . the IPython completion mechanism so they can be tab-completed: In [5]: df.fo df.foo1 df.foo2 5.3 Panel Panel is a somewhat less-used, but still important container for 3-dimensional data. The term Dimensions: 2 (items) x 2 (major) x 2 (minor) Items: A to B Major axis: one to two Minor axis: x to y 5.3. Panel 41 pandas: powerful Python data analysis toolkit, Release 0.7.1 5.3.4 Item selection / addition

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 5.3 Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . the IPython completion mechanism so they can be tab-completed: In [5]: df.fo df.foo1 df.foo2 5.3 Panel Panel is a somewhat less-used, but still important container for 3-dimensional data. The term Dimensions: 2 (items) x 2 (major) x 2 (minor) Items: A to B Major axis: one to two Minor axis: x to y 5.3. Panel 41 pandas: powerful Python data analysis toolkit, Release 0.7.2 5.3.4 Item selection / addition

What’s new in 1.1.0 (July 28, 2020) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2572 5.3 Version 1.0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 915 pandas: powerful Python data analysis toolkit, Release 1.2.0 (continued from previous page) 5.3 ms +- 46 us per loop (mean +- std. dev. of 7 runs, 100 loops each) 1.27 ms +- 2.38 us per loop (mean venkateshdatta1993 + • vivikelapoutre + • willbowditch + • willpeppo + • za + • zaki-indra + 5.3 Version 1.0 5.3.1 What’s new in 1.0.5 (June 17, 2020) These are the changes in pandas 1.0.5. See

What’s new in 1.1.0 (July 28, 2020) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2584 5.3 Version 1.0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . venkateshdatta1993 + • vivikelapoutre + • willbowditch + • willpeppo + • za + • zaki-indra + 5.3 Version 1.0 5.3.1 What’s new in 1.0.5 (June 17, 2020) These are the changes in pandas 1.0.5. See regression in Series.groupby() would raise ValueError when grouping by PeriodIndex level (GH34010) 5.3. Version 1.0 2627 pandas: powerful Python data analysis toolkit, Release 1.2.3 • Fix regression in