R_l1_g3 R3C0 R3C1 R3C2 R_l0_g4 R_l1_g4 R4C0 R4C1 R4C2 • Support for HDFStore (via PyTables 3.0.0) on Python3 • Iterator support via read_hdf that automatically opens and closes the store when iteration is Fixed bug where a 1xN DataFrame would barf on a 1xN mask (GH4071) • Fixed running of tox under python3 where the pickle import was getting rewritten in an incompatible way (GH4062, GH4063) 12 Chapter columns with a timezone as data_columns (GH2852) – table writing performance improvements. – support python3 (via PyTables 3.0.0) (GH3750) • Add modulo operator to Series, DataFrame • Add date method to DatetimeIndex

to observe holidays (GH7070) • pandas.tseries.holiday.Holiday now supports a list of offsets in Python3 (GH7070) • pandas.tseries.holiday.Holiday now supports a days_of_week parameter (GH7070) • GroupBy R_l0_g4 R_l1_g4 R4C0 R4C1 R4C2 [5 rows x 3 columns] • Support for HDFStore (via PyTables 3.0.0) on Python3 • Iterator support via read_hdf that automatically opens and closes the store when iteration is Fixed bug where a 1xN DataFrame would barf on a 1xN mask (GH4071) • Fixed running of tox under python3 where the pickle import was getting rewritten in an incompatible way (GH4062, GH4063) • Fixed bug

to observe holidays (GH7070) • pandas.tseries.holiday.Holiday now supports a list of offsets in Python3 (GH7070) • pandas.tseries.holiday.Holiday now supports a days_of_week parameter (GH7070) • GroupBy R_l0_g4 R_l1_g4 R4C0 R4C1 R4C2 [5 rows x 3 columns] • Support for HDFStore (via PyTables 3.0.0) on Python3 • Iterator support via read_hdf that automatically opens and closes the store when iteration is Fixed bug where a 1xN DataFrame would barf on a 1xN mask (GH4071) • Fixed running of tox under python3 where the pickle import was getting rewritten in an incompatible way (GH4062, GH4063) 114 Chapter

to observe holidays (GH7070) • pandas.tseries.holiday.Holiday now supports a list of offsets in Python3 (GH7070) • pandas.tseries.holiday.Holiday now supports a days_of_week parameter (GH7070) • GroupBy R_l0_g4 R_l1_g4 R4C0 R4C1 R4C2 [5 rows x 3 columns] • Support for HDFStore (via PyTables 3.0.0) on Python3 • Iterator support via read_hdf that automatically opens and closes the store when iteration is Fixed bug where a 1xN DataFrame would barf on a 1xN mask (GH4071) • Fixed running of tox under python3 where the pickle import was getting rewritten in an incompatible way (GH4062, GH4063) 108 Chapter

result with a named empty index (GH13432) • Bugs in Index.difference and DataFrame.join raise in Python3 when using mixed-integer indexes (GH13432, GH12814) • Bug in subtract tz-aware datetime.datetime to observe holidays (GH7070) • pandas.tseries.holiday.Holiday now supports a list of offsets in Python3 (GH7070) • pandas.tseries.holiday.Holiday now supports a days_of_week parameter (GH7070) • GroupBy R_l0_g4 R_l1_g4 R4C0 R4C1 R4C2 [5 rows x 3 columns] • Support for HDFStore (via PyTables 3.0.0) on Python3 • Iterator support via read_hdf that automatically opens and closes the store when iteration is

result with a named empty index (GH13432) • Bugs in Index.difference and DataFrame.join raise in Python3 when using mixed-integer indexes (GH13432, GH12814) • Bug in subtract tz-aware datetime.datetime to observe holidays (GH7070) • pandas.tseries.holiday.Holiday now supports a list of offsets in Python3 (GH7070) • pandas.tseries.holiday.Holiday now supports a days_of_week parameter (GH7070) • GroupBy R_l0_g4 R_l1_g4 R4C0 R4C1 R4C2 [5 rows x 3 columns] • Support for HDFStore (via PyTables 3.0.0) on Python3 • Iterator support via read_hdf that automatically opens and closes the store when iteration is

result with a named empty index (GH13432) • Bugs in Index.difference and DataFrame.join raise in Python3 when using mixed-integer indexes (GH13432, GH12814) • Bug in subtract tz-aware datetime.datetime to observe holidays (GH7070) • pandas.tseries.holiday.Holiday now supports a list of offsets in Python3 (GH7070) • pandas.tseries.holiday.Holiday now supports a days_of_week parameter (GH7070) • GroupBy R_l0_g4 R_l1_g4 R4C0 R4C1 R4C2 [5 rows x 3 columns] • Support for HDFStore (via PyTables 3.0.0) on Python3 • Iterator support via read_hdf that automatically opens and closes the store when iteration is

result with a named empty index (GH13432) • Bugs in Index.difference and DataFrame.join raise in Python3 when using mixed-integer indexes (GH13432, GH12814) • Bug in subtract tz-aware datetime.datetime to observe holidays (GH7070) • pandas.tseries.holiday.Holiday now supports a list of offsets in Python3 (GH7070) • pandas.tseries.holiday.Holiday now supports a days_of_week parameter (GH7070) • GroupBy R_l0_g4 R_l1_g4 R4C0 R4C1 R4C2 [5 rows x 3 columns] • Support for HDFStore (via PyTables 3.0.0) on Python3 • Iterator support via read_hdf that automatically opens and closes the store when iteration is

result with a named empty index (GH13432) • Bugs in Index.difference and DataFrame.join raise in Python3 when using mixed-integer indexes (GH13432, GH12814) • Bug in subtract tz-aware datetime.datetime to observe holidays (GH7070) • pandas.tseries.holiday.Holiday now supports a list of offsets in Python3 (GH7070) • pandas.tseries.holiday.Holiday now supports a days_of_week parameter (GH7070) • GroupBy R_l0_g4 R_l1_g4 R4C0 R4C1 R4C2 [5 rows x 3 columns] • Support for HDFStore (via PyTables 3.0.0) on Python3 • Iterator support via read_hdf that automatically opens and closes the store when iteration is

cannot know whether some category is omitted in- tentionally or because it is misspelled or (under Python3) due to a type difference (e.g., NumPy S1 dtype and Python strings). This can result in surprising reorder), which can result in surprising changes, for example when using special string dtypes on python3, which does not considers a S1 string equal to a single char python string. Parameters new_categories reorder), which can result in surprising changes, for example when using special string dtypes on python3, which does not considers a S1 string equal to a single char python string. Parameters new_categories