BUG: DatetimeIndex with tz and single column name, return empty df (#19157) (#19330)

Author: JQGoh

doc/source/whatsnew/v0.23.0.txt

@@ -431,6 +431,7 @@ Timezones
 - :func:`Timestamp.replace` will now handle Daylight Savings transitions gracefully (:issue:`18319`)
 - Bug in tz-aware :class:`DatetimeIndex` where addition/subtraction with a :class:`TimedeltaIndex` or array with ``dtype='timedelta64[ns]'`` was incorrect (:issue:`17558`)
 - Bug in :func:`DatetimeIndex.insert` where inserting ``NaT`` into a timezone-aware index incorrectly raised (:issue:`16357`)
+- Bug in the :class:`DataFrame` constructor, where tz-aware Datetimeindex and a given column name will result in an empty ``DataFrame`` (:issue:`19157`)
 
 Offsets
 ^^^^^^^

pandas/core/frame.py

@@ -512,7 +512,11 @@ def _get_axes(N, K, index=index, columns=columns):
  return _arrays_to_mgr([values], columns, index, columns,
  dtype=dtype)
  elif is_datetimetz(values):
- return self._init_dict({0: values}, index, columns, dtype=dtype)
+ # GH19157
+ if columns is None:
+ columns = [0]
+ return _arrays_to_mgr([values], columns, index, columns,
+ dtype=dtype)
 
  # by definition an array here
  # the dtypes will be coerced to a single dtype

pandas/tests/frame/test_constructors.py

@@ -2092,3 +2092,14 @@ def test_frame_timeseries_to_records(self):
  result['index'].dtype == 'M8[ns]'
 
  result = df.to_records(index=False)
+
+ def test_frame_timeseries_column(self):
+ # GH19157
+ dr = date_range(start='20130101T10:00:00', periods=3, freq='T',
+ tz='US/Eastern')
+ result = DataFrame(dr, columns=['timestamps'])
+ expected = DataFrame({'timestamps': [
+ Timestamp('20130101T10:00:00', tz='US/Eastern'),
+ Timestamp('20130101T10:01:00', tz='US/Eastern'),
+ Timestamp('20130101T10:02:00', tz='US/Eastern')]})
+ tm.assert_frame_equal(result, expected)