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@xinrong-meng xinrong-meng released this 11 Dec 18:48
· 149 commits to master since this release
v1.5.0
b65891d

Index operations support

We improved Index operations support (#1944, #1955).

Here are some examples:

  • Before

    >>> kidx = ks.Index([1, 2, 3, 4, 5])
>>> kidx + kidx
Int64Index([2, 4, 6, 8, 10], dtype='int64')
>>> kidx + kidx + kidx
Traceback (most recent call last):
...
AssertionError: args should be single DataFrame or single/multiple Series
    >>> ks.Index([1, 2, 3, 4, 5]) + ks.Index([6, 7, 8, 9, 10])
Traceback (most recent call last):
...
AssertionError: args should be single DataFrame or single/multiple Series

  • After

    >>> kidx = ks.Index([1, 2, 3, 4, 5])
>>> kidx + kidx + kidx
Int64Index([3, 6, 9, 12, 15], dtype='int64')
    >>> ks.options.compute.ops_on_diff_frames = True
>>> ks.Index([1, 2, 3, 4, 5]) + ks.Index([6, 7, 8, 9, 10])
Int64Index([7, 9, 13, 11, 15], dtype='int64')

Other new features and improvements

We added the following new features:

DataFrame:

Series:

Index:

MultiIndex:

GroupBy:

Other improvements and bug fixes

  • Support DataFrame parameter in Series.dot (#1931)
  • Add a best practice for checkpointing. (#1930)
  • Remove implicit switch-ons of "compute.ops_on_diff_frames" (#1953)
  • Fix Series._to_internal_pandas and introduce Index._to_internal_pandas. (#1952)
  • Fix first/last_valid_index to support empty column DataFrame. (#1923)
  • Use pandas' transpose when the data is expected to be small. (#1932)
  • Fix tail to use the resolved copy (#1942)
  • Avoid unneeded reset_index in DataFrameGroupBy.describe. (#1951)
  • TypeError when Index.name / Series.name is not a hashable type (#1883)
  • Adjust data column names before attaching default index. (#1947)
  • Add plotly into the optional dependency in Koalas (#1939)
  • Add plotly backend test cases (#1938)
  • Don't pass stacked in plotly area chart (#1934)
  • Set upperbound of matplotlib to avoid failure on Ubuntu (#1959)
  • Fix GroupBy.descirbe for multi-index columns. (#1922)
  • Upgrade pandas version in CI (#1961)
  • Compare Series from the same anchor (#1956)
  • Add videos from Data+AI Summit 2020 EUROPE. (#1963)
  • Set PYARROW_IGNORE_TIMEZONE for binder. (#1965)
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