ENH: Working on getting to merge ready, cleanup. See full commit message

- get rid of Ts class, simplify timestamp creation
- rename tzinfo to tz
- get rid of deprecated / new offset mapping, will deal with users
- add Index.is_unique, check via is_monotonic cython routine
- tofreq -> asfreq again
- work around numpy refcount bug in Index.append with datetime64 type promotion
- fix bug in Index.join with empty indexes
- handle legacy DateRange unpickling in BlockManager
- date_range/bdate_range factory functions, test refactoring
- got rid of all deprecation warnings in test suite, usages of DateRange
- fix merge issue? in generate_code.py
- attach tz in DatetimeIndex.asobject
- failing duplicate timestamp test
- _tseries.pyd depends on datetime.pyx

Author: wesm

pandas/core/api.py

@@ -7,11 +7,14 @@
 
 from pandas.core.common import isnull, notnull, save, load
 from pandas.core.format import set_printoptions
-from pandas.core.index import (Index, Int64Index, Factor, MultiIndex, 
+from pandas.core.index import (Index, Int64Index, Factor, MultiIndex,
                                DatetimeIndex, IntervalIndex)
 
+# deprecated
 from pandas.core.daterange import DateRange
-from pandas.core.datetools import Ts, Interval
+
+from pandas.core.daterange import date_range, bdate_range
+from pandas.core.datetools import Timestamp, Interval
 
 from pandas.core.series import Series, TimeSeries
 from pandas.core.frame import DataFrame

pandas/core/common.py

@@ -163,6 +163,8 @@ def take_1d(arr, indexer, out=None, fill_value=np.nan):
         # Cython methods expects 32-bit integers
         indexer = np.array(indexer, dtype=np.int32)
 
+    indexer = _ensure_int32(indexer)
+
     out_passed = out is not None
 
     if dtype_str in ('int32', 'int64', 'bool'):

pandas/core/daterange.py

@@ -3,12 +3,13 @@
 from pandas.core.index import DatetimeIndex, Index
 import pandas.core.datetools as datetools
 
-__all__ = ['DateRange']
 
 #-----------------------------------------------------------------------------
 # DateRange class
 
-class DateRange(DatetimeIndex):
+class DateRange(Index):
+
+    offset = tzinfo = None
 
     def __new__(cls, start=None, end=None, periods=None,
                 offset=datetools.bday, time_rule=None,
@@ -24,10 +25,25 @@ def __new__(cls, start=None, end=None, periods=None,
         elif 'timeRule' in kwds and kwds['timeRule'] is not None:
             offset = datetools._offsetMap[kwds['timeRule']]
 
-        return super(DateRange, cls).__new__(cls, start=start, end=end,
-                periods=periods, offset=offset, tzinfo=tzinfo, name=name,
-                _deprecated=True, **kwds)
-
+        return DatetimeIndex(start=start, end=end,
+                             periods=periods, offset=offset,
+                             tzinfo=tzinfo, name=name, _deprecated=True,
+                             **kwds)
+
+    def __setstate__(self, aug_state):
+        """Necessary for making this object picklable"""
+        index_state = aug_state[:1]
+        offset = aug_state[1]
+
+        # for backwards compatibility
+        if len(aug_state) > 2:
+            tzinfo = aug_state[2]
+        else: # pragma: no cover
+            tzinfo = None
+
+        self.offset = offset
+        self.tzinfo = tzinfo
+        Index.__setstate__(self, *index_state)
 
 def date_range(start=None, end=None, periods=None, freq='D', tz=None):
     """