@@ -69,13 +69,15 @@ API Changes
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- ``dtypes `` and ``ftypes `` now return a series with ``dtype=object `` on empty containers (:issue: `5740 `)
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- The ``interpolate `` ``downcast `` keyword default has been changed from ``infer `` to
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``None ``. This is to preseve the original dtype unless explicitly requested otherwise (:issue: `6290 `).
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- - allow a Series to utilize index methods for its index type, e.g. ``Series.year `` is now defined
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+ - allow a Series to utilize index methods depending on its index type, e.g. ``Series.year `` is now defined
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for a Series with a ``DatetimeIndex `` or a ``PeriodIndex ``; trying this on a non-supported Index type will
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now raise a ``TypeError ``. (:issue: `4551 `, :issue: `4056 `, :issue: `5519 `)
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The following affected:
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- - ``date,time,year,month,day,hour,minute,second,weekofyear ``
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- - ``week,dayofweek,dayofyear,quarter,microsecond,nanosecond,qyear ``
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+ - ``date,time,year,month,day ``
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+ - ``hour,minute,second,weekofyear ``
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+ - ``week,dayofweek,dayofyear,quarter ``
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+ - ``microsecond,nanosecond,qyear ``
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- ``min(),max() ``
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Experimental Features
@@ -94,8 +96,8 @@ Improvements to existing features
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- improve performance of slice indexing on Series with string keys (:issue: `6341 `, :issue: `6372 `)
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- implement joining a single-level indexed DataFrame on a matching column of a multi-indexed DataFrame (:issue: `3662 `)
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- Performance improvement in indexing into a multi-indexed Series (:issue: `5567 `)
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- - Testing statements updated to use specialized asserts (:issue: `6175 `)
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- - ``Series.rank() `` now has a percentage rank option (:issue: `5971 `)
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+ - Testing statements updated to use specialized asserts (:issue: `6175 `)
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+ - ``Series.rank() `` now has a percentage rank option (:issue: `5971 `)
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- ``quotechar ``, ``doublequote ``, and ``escapechar `` can now be specified when
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using ``DataFrame.to_csv `` (:issue: `5414 `, :issue: `4528 `)
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