ENH: datetime: Remove np.datetime_ so autocomplete will find np.datet…

…ime64

This is from user feedback, indicating that always having to type the
'6' was very annoying. Unfortunately, there are still the functions
datetime_as_date and datetime_data which prevent the autocomplete from
working right.

numpy/core/numerictypes.py

@@ -33,17 +33,10 @@
     int_, uint,
     longlong, ulonglong,
 
-
     single, csingle,
     float_, complex_,
     longfloat, clongfloat,
 
-
-    datetime_
-    timedelta_,  (this inherits from from signedinteger, as it is
-                  a signed integer with an associated time unit)
-
-
    As part of the type-hierarchy:    xx -- is bit-width
 
    generic
@@ -405,9 +398,7 @@ def _set_up_aliases():
                   ('longcomplex', 'clongdouble'),
                   ('bool_', 'bool'),
                   ('unicode_', 'unicode'),
-                  ('object_', 'object'),
-                  ('timedelta_', 'timedelta'),
-                  ('datetime_', 'datetime')]
+                  ('object_', 'object')]
     if sys.version_info[0] >= 3:
         type_pairs.extend([('bytes_', 'string'),
                            ('str_', 'unicode'),

numpy/core/tests/test_regression.py

@@ -1306,7 +1306,7 @@ def test_fromstring_crash(self):
     def test_ticket_1539(self):
         dtypes = [x for x in np.typeDict.values()
                   if (issubclass(x, np.number)
-                      and not issubclass(x, np.timedelta_))]
+                      and not issubclass(x, np.timedelta64))]
         a = np.array([], dtypes[0])
         failures = []
         for x in dtypes: