---------------------------------------------------------------------------
TypeError Traceback (most recent call last)
<ipython-input-126-4f1ec8ec51e9> in <module>
----> 1 df.loc[:, 'hour'] = df['timestamp_utc'].dt.floor(freq='1 H')
2 df
~/covid-19/venv/lib/python3.6/site-packages/pandas/core/indexing.py in __setitem__(self, key, value)
669 key = com.apply_if_callable(key, self.obj)
670 indexer = self._get_setitem_indexer(key)
--> 671 self._setitem_with_indexer(indexer, value)
672
673 def _validate_key(self, key, axis: int):
~/covid-19/venv/lib/python3.6/site-packages/pandas/core/indexing.py in _setitem_with_indexer(self, indexer, value)
848 indexer, self.obj.axes
849 )
--> 850 self._setitem_with_indexer(new_indexer, value)
851
852 return self.obj
~/covid-19/venv/lib/python3.6/site-packages/pandas/core/indexing.py in _setitem_with_indexer(self, indexer, value)
1010 labels, value, plane_indexer, lplane_indexer, self.obj
1011 ):
-> 1012 setter(labels[0], value)
1013
1014 # per label values
~/covid-19/venv/lib/python3.6/site-packages/pandas/core/indexing.py in setter(item, v)
960 s._consolidate_inplace()
961 s = s.copy()
--> 962 s._data = s._data.setitem(indexer=pi, value=v)
963 s._maybe_update_cacher(clear=True)
964
~/covid-19/venv/lib/python3.6/site-packages/pandas/core/internals/managers.py in setitem(self, **kwargs)
559
560 def setitem(self, **kwargs):
--> 561 return self.apply("setitem", **kwargs)
562
563 def putmask(self, **kwargs):
~/covid-19/venv/lib/python3.6/site-packages/pandas/core/internals/managers.py in apply(self, f, filter, **kwargs)
440 applied = b.apply(f, **kwargs)
441 else:
--> 442 applied = getattr(b, f)(**kwargs)
443 result_blocks = _extend_blocks(applied, result_blocks)
444
~/covid-19/venv/lib/python3.6/site-packages/pandas/core/internals/blocks.py in setitem(self, indexer, value)
856 if not is_dtype_equal(self.dtype, dtype):
857 b = self.astype(dtype)
--> 858 return b.setitem(indexer, value)
859
860 # value must be storeable at this moment
~/covid-19/venv/lib/python3.6/site-packages/pandas/core/internals/blocks.py in setitem(self, indexer, value)
906
907 try:
--> 908 values = values.astype(arr_value.dtype)
909 except ValueError:
910 pass
TypeError: data type not understood