. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 1.3.1.1 agg API for DataFrame/Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 1.3.1.2 dtype keyword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 1.3.2 Backwards incompatible API changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 1.3.2.1 Possible incompatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 1.3.2.6 Partial String Indexing Changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 1.3.2.7 Concat of different float dtypes

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 1.2.2 Backwards incompatible API changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 1.2.2.1 Dependencies have increased with a list with missing labels is Deprecated . . . . . . . . . . . . . . . . 16 1.2.2.4 NA naming Changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 1.2.2.5 Iteration of Series/Index Automatic Matplotlib Converters . . . . . . . . . . . . . . . . . . . . . . . . . 24 1.2.2.14 Other API Changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 1.2.3 Deprecations . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 1.2.1.1 agg API for DataFrame/Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 1.2.1.2 dtype keyword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 1.2.2 Backwards incompatible API changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 1.2.2.1 Possible incompatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 1.2.2.6 Partial String Indexing Changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 1.2.2.7 Concat of different float dtypes

development API . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Other enhancements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 1.2.2 API changes . . . . . . . . . . . . . . . . 23 .to_datetime() changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Merging changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 .describe() changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Period changes . . . . . . . . . . . . . . . . . . . . . . . . . . .

development API . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Other enhancements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 1.1.2 API changes . . . . . . . . . . . . . . . . 21 .to_datetime() changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Merging changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 .describe() changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Period changes . . . . . . . . . . . . . . . . . . . . . . . . . . .

Release 1.0.0 2 CONTENTS CHAPTER ONE WHAT’S NEW IN 1.0.0 (JANUARY 29, 2020) These are the changes in pandas 1.0.0. See release for a full changelog including other versions of pandas. Note: The ..) • Deprecations will be enforced in major releases (e.g. 1.0.0, 2.0.0, 3.0.0, ...) • API-breaking changes will be made only in major releases (except for experimental features) See Version Policy pandas.api.indexers.BaseIndexer() class that allows users to define how window bounds are created during rolling operations. Users can define their own get_window_bounds method on a pandas. api.indexers

guaranteed backwards compatible back to pan- das version 0.20.3 (GH27082) {{ header }} These are the changes in pandas 0.25.0. See release for a full changelog including other versions of pandas. 1.1 Enhancements backend', '') where API (GH14130) • pandas.offsets.BusinessHour supports multiple opening hours intervals (GH15481) • read_excel() 2019) pandas: powerful Python data analysis toolkit, Release 0.25.1 1.2 Backwards incompatible API changes 1.2.1 Indexing with date strings with UTC offsets Indexing a DataFrame or Series with a DatetimeIndex

guaranteed backwards compatible back to pan- das version 0.20.3 (GH27082) {{ header }} These are the changes in pandas 0.25.0. See release for a full changelog including other versions of pandas. 1.1 Enhancements backend', '') where API (GH14130) • pandas.offsets.BusinessHour supports multiple opening hours intervals (GH15481) • read_excel() 2019) pandas: powerful Python data analysis toolkit, Release 0.25.0 1.2 Backwards incompatible API changes 1.2.1 Indexing with date strings with UTC offsets Indexing a DataFrame or Series with a DatetimeIndex

Creating example data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1018 3 API reference 1019 3.1 Input/output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2668 3.15.1 pandas.api.extensions.register_extension_dtype . . . . . . . . . . . . . . . . . . . . . . . . 2668 3.15.2 pandas.api.extensions.register_dataframe_accessor . . . . . . . . . . . . . . 2668 3.15.3 pandas.api.extensions.register_series_accessor . . . . . . . . . . . . . . . . . . . . . . . . . 2670 3.15.4 pandas.api.extensions.register_index_accessor . . . .

Creating example data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 910 3 API reference 913 3.1 Input/output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2396 3.16.1 pandas.api.extensions.register_extension_dtype . . . . . . . . . . . . . . . . . . . . . . . . 2396 3.16.2 pandas.api.extensions.register_dataframe_accessor . . . . . . . . . . . . . . 2396 3.16.3 pandas.api.extensions.register_series_accessor . . . . . . . . . . . . . . . . . . . . . . . . . 2398 3.16.4 pandas.api.extensions.register_index_accessor . . . .