Merge branch 'master' into comps

* master: (25 commits)
  [DataFrame] Add direct pandas imports for MVP (ray-project#1960)
  Make ActorHandles pickleable, also make proper ActorHandle and ActorC… (ray-project#2007)
  Expand local_dir in Trial init (ray-project#2013)
  Fixing ascii error for Python2 (ray-project#2009)
  [DataFrame] Implements df.update (ray-project#1997)
  [DataFrame] Implements df.as_matrix (ray-project#2001)
  [DataFrame] Implement quantile (ray-project#1992)
  [DataFrame] Impement sort_values and sort_index (ray-project#1977)
  [DataFrame] Implement rank (ray-project#1991)
  [DataFrame] Implemented prod, product, added test suite (ray-project#1994)
  [DataFrame] Implemented __setitem__, select_dtypes, and astype (ray-project#1941)
  [DataFrame] Implement diff (ray-project#1996)
  [DataFrame] Implemented nunique, skew (ray-project#1995)
  [DataFrame] Implements filter and dropna (ray-project#1959)
  [DataFrame] Implements df.pipe (ray-project#1999)
  [DataFrame] Apply() for Lists and Dicts (ray-project#1973)
  Clean up syntax for supported Python versions. (ray-project#1963)
  [DataFrame] Implements mode, to_datetime, and get_dummies (ray-project#1956)
  [DataFrame] Fix dtypes (ray-project#1930)
  keep_dims -> keepdims (ray-project#1980)
  ...

.travis.yml

@@ -145,7 +145,6 @@ script:
 
   # ray dataframe tests
   - python -m pytest python/ray/dataframe/test/test_dataframe.py
-  - python -m pytest python/ray/dataframe/test/test_series.py
   - python -m pytest python/ray/dataframe/test/test_concat.py
   - python -m pytest python/ray/dataframe/test/test_io.py
 

python/ray/dataframe/__init__.py

@@ -3,7 +3,13 @@
 from __future__ import print_function
 
 import pandas as pd
-from pandas import (eval, Panel, date_range, MultiIndex)
+# TODO: In the future `set_option` or similar needs to run on every node
+# in order to keep all pandas instances across nodes consistent
+from pandas import (eval, unique, value_counts, cut, to_numeric, factorize,
+                    test, qcut, match, Panel, date_range, Index, MultiIndex,
+                    CategoricalIndex, Series, bdate_range, DatetimeIndex,
+                    Timedelta, Timestamp, to_timedelta, set_eng_float_format,
+                    set_option, NaT)
 import threading
 
 pd_version = pd.__version__
@@ -29,16 +35,21 @@ def get_npartitions():
 # We import these file after above two function
 # because they depend on npartitions.
 from .dataframe import DataFrame  # noqa: 402
-from .series import Series  # noqa: 402
 from .io import (read_csv, read_parquet, read_json, read_html,  # noqa: 402
                  read_clipboard, read_excel, read_hdf, read_feather,  # noqa: 402
                  read_msgpack, read_stata, read_sas, read_pickle,  # noqa: 402
                  read_sql)  # noqa: 402
 from .concat import concat  # noqa: 402
+from .datetimes import to_datetime  # noqa: 402
+from .reshape import get_dummies  # noqa: 402
 
 __all__ = [
     "DataFrame", "Series", "read_csv", "read_parquet", "concat", "eval",
-    "Panel", "date_range", "MultiIndex"
+    "unique", "value_counts", "cut", "to_numeric", "factorize", "test", "qcut",
+    "match", "to_datetime", "get_dummies", "Panel", "date_range", "Index",
+    "MultiIndex", "Series", "bdate_range", "DatetimeIndex", "to_timedelta",
+    "set_eng_float_format", "set_option", "CategoricalIndex", "Timedelta",
+    "Timestamp", "NaT"
 ]
 
 try: