DOC: Improve what's new · pandas-dev/pandas@09dcbff (original) (raw)
``` @@ -64,15 +64,24 @@ Strings passed to DataFrame.groupby() as the by parameter may now refere
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` df.groupby(['second', 'A']).sum()
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Reading dataframes from URLs, in :func:`read_csv` or :func:`read_table`, now
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supports additional compression methods (`xz`, `bz2`, `zip`). Previously, only
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`gzip` compression was supported. By default, compression of URLs and paths are
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now both inferred using their file extensions.
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.. _whatsnew_0200.enhancements.compressed_urls:
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.. ipython:: python
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Better support for compressed URLs in ``read_csv``
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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Compression code was refactored (:issue:12688). As a result, reading
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dataframes from URLs in :func:read_csv or :func:read_table now supports
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additional compression methods: ``xz``, ``bz2``, and ``zip`` (:issue:`14570`).
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Previously, only ``gzip`` compression was supported. By default, compression of
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URLs and paths are now both inferred using their file extensions. Additionally,
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bz2 support for the python 2 c-engine improved (:issue:14874).
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url = ('https://github.com/pandas-dev/pandas/raw/master/' +
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'pandas/io/tests/parser/data/salaries.csv.bz2')
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.. ipython:: python
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url = 'https://github.com/{repo}/raw/{branch}/{path}'.format(
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repo = 'pandas-dev/pandas',
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branch = 'master',
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path = 'pandas/io/tests/parser/data/salaries.csv.bz2',
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)
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` df = pd.read_table(url, compression='infer') # default, infer compression
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` df = pd.read_table(url, compression='bz2') # explicitly specify compression
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` df.head(2)
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