ANN: Pandas 0.21.0 Released

Tom Augspurger tom.w.augspurger at
Sat Oct 28 14:53:32 EDT 2017


I'm pleased to announce the availability pandas 0.21.0.

This is a major release from 0.20.3 and includes a number of API changes,
deprecations, new features, enhancements, and performance improvements
along with a large number of bug fixes. We recommend that all users upgrade
to this version.

Highlights include:

- Integration with Apache Parquet <>, including a
new top-level read_parquet
function and a DataFrame.to_parquet
method, see here

- New user-facing dtype pandas.api.types.CategoricalDtype
for specifying categoricals independent of the data, see here

- The behavior of sum and prod on all-NaN Series/DataFrames is now
consistent and no longer depends on whether bottleneck
<> is installed, see here

- Compatibility fixes for pypy, see here

- Additions to the drop, reindex, and rename API to make them more
consistent, see here

- Addition of the new methods DataFrame.infer_objects (see here
and GroupBy.pipe (see here

- Indexing with a list of labels, where one or more of the labels is
missing, is deprecated and will raise a KeyError in a future version, see

Check the whatsnew
<> for
detailed changes, including backwards incompatible changes
and deprecations
Please report any issues you find on the pandas issue tracker

Binary packages will be available in the defaults and conda-forge channels

conda install pandas

Wheels and a source distribution are available on PyPI.

pip install --upgrade pip setuptools
pip install --upgrade --upgrade-strategy=only-if-needed pandas


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