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Flexible and powerful data analysis / manipulation library for Python, providing labeled data structures similar to R data.frame objects, statistical functions, and much more

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Pandas v1.0.0

Pandas: v1.0.0 Release

Release date:

January 29, 2020

Previous version:

v1.0.0rc0 (released January 9, 2020)

Magnitude:

3,702 Diff Delta

Contributors:

9 total committers

Data confidence:

Commits:

61 Commits in this Release

Ordered by the degree to which they evolved the repo in this version.

Backport PR #30959: ENH: Add Stata 119 writer (#31009)

Authored January 14, 2020

ENH: Implement convert_dtypes (#30929) (#31282)

Authored January 24, 2020

Backport PR #29836: ENH: XLSB support (#31166)

Authored January 21, 2020

Backport PR #31025: ENH: Handle extension arrays in algorithms.diff (#31255)

Authored January 23, 2020

Backport PR #30977: JSON Date Handling 1.0 Regressions (#31120)

Authored January 18, 2020

Backport PR #30980: API: Disallow NaN in StringArray constructor (#31000)

Authored January 14, 2020

Backport PR #29712: CI: Fix clipboard problems (#31042)

Authored January 15, 2020

Backport PR #30860: REF: gradually move ExtensionIndex delegation to use inherit_names (#31375)

Authored January 28, 2020

Backport PR #31203: numpydev ragged array dtype warning (#31209)

Authored January 22, 2020

PERF: improve access of .array (#31037) (#31275)

Authored January 24, 2020

API: generalized check_array_indexer for validating array-like getitem indexers (#31150) (#31419)

Authored January 29, 2020

BUG: regression when applying groupby aggregation on categorical columns (#31359) (#31428)

Authored January 29, 2020

Backport PR #30971: BUG: reductions for nullable dtypes should return pd.NA for skipna=False (#31121)

Authored January 18, 2020

Backport PR #31136: COMPAT: Return NotImplemented for subclassing (#31405)

Authored January 28, 2020

Backport PR #30553: TST/BUG: fix incorrectly-passing Exception in test_html (#31124)

Authored January 18, 2020

Backport PR #31159: ENH: Implement _from_sequence_of_strings for BooleanArray (#31261)

Authored January 23, 2020

Backport PR #30960: [BUG] -1 to the power of pd.NA was returning -1 (#30983)

Authored January 13, 2020

Backport PR #29393: BUG: GH25495 incorrect dtype when using .loc to set Categorical value for column in 1-row DataFrame (#31393)

Authored January 28, 2020

Backport PR #30900: REGR: Fixed hash_key=None for object values (#30968)

Authored January 13, 2020

Backport PR #31187: BUG: IntegerArray.astype(boolean) (#31254)

Authored January 23, 2020

Backport PR #30784: API: DataFrame.take always returns a copy (#31362)

Authored January 28, 2020

Backport PR #31423: PERF: postpone imports in Index constructor (#31424)

Authored January 29, 2020

Backport PR #30973: Compat for util.testing import (#30981)

Authored January 13, 2020

Backport PR #31232: REGR: Fix IntervalIndex.map when result is object dtype (#31246)

Authored January 23, 2020

Backport PR #31361: Avoid Index DeprecationWarning in Series getitem (#31403)

Authored January 28, 2020

Backport PR #31017: REG: restore format_type attr (#31206)

Authored January 22, 2020

Backport PR #31290: BUG: Handle IntegerArray in pd.cut (#31374)

Authored January 28, 2020

Backport PR #31018: BUG: Preserve string dtype in extract (#31030)

Authored January 15, 2020

Backport PR #31095: DOC: Restore ExtensionIndex.dropna.__doc__ (#31152)

Authored January 20, 2020

Backport PR #31215: Follow-up: XLSB Support (#31221)

Authored January 22, 2020

Backport PR #31249: TST: Fix timestamp comparison test (#31265)

Authored January 23, 2020

"Backport PR #31358 on branch 1.0.x" (#31376)

Authored January 28, 2020

Backport PR #31036: BUG: AssertionError on Series.append(DataFrame) fix #30975 (#31267)

Authored January 24, 2020

Backport PR #31211: BUG: Fixed upcast dtype for datetime64 in merge (#31240)

Authored January 23, 2020

Backport PR #31133: BUG: Break reference from grouping level to MI (#31164)

Authored January 20, 2020

Backport PR #31323: CI: Fix jedi upgrades causes deprecation warning (#31341)

Authored January 27, 2020

Backport PR #31097: DOC: Replace ggpy with plotnine in ecosystem (#31122)

Authored January 18, 2020

Backport PR #30905: BUG: SystemError in df.sum (#31044)

Authored January 15, 2020

Backport PR #31411: COMPAT: dont pass dtype to datetime64 (#31421)

Authored January 29, 2020

Backport PR #31024: CI: Travis Remove Unrequired Exclude (#31026)

Authored January 15, 2020

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v1.0.0rc0 Released January 9, 2020

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Top Contributors in v1.0.0

meeseeksmachine

jorisvandenbossche

TomAugspurger

jbrockmendel

jschendel

ShaharNaveh

pandas-development-team-79e2

tsvikas

fujiaxiang

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Release Notes Published

This is a major release from 0.25.3, and includes a number of API changes, new features, enhancements, and performance improvements along with a large number of bug fixes.

Highlights include

A redesigned website and documentation theme
Using Numba in rolling.apply
A new DataFrame method for converting to Markdown
A new scalar for missing values
Dedicated extension types for string and nullable boolean data

See the whatsnew for a list of all the changes.

The release can be installed from PyPI

python -m pip install --upgrade pandas

Or with conda from the defaults or conda-forge channels.

conda install pandas

Please report any issues with the release candidate on the pandas issue tracker.