---------------------------------------------------------------------------
ValueError                                Traceback (most recent call last)
Input In [12], in <cell line: 1>()
----> 1 da.pad({'x': 1}, 'constant', constant_values=np.NAN)

File ~/Documents/Work/Code/xarray/xarray/core/dataarray.py:4158, in DataArray.pad(self, pad_width, mode, stat_length, constant_values, end_values, reflect_type, **pad_width_kwargs)
   4000 def pad(
   4001     self,
   4002     pad_width: Mapping[Any, int | tuple[int, int]] | None = None,
   (...)
   4012     **pad_width_kwargs: Any,
   4013 ) -> DataArray:
   4014     """Pad this array along one or more dimensions.
   4015 
   4016     .. warning::
   (...)
   4156         z        (x) float64 nan 100.0 200.0 nan
   4157     """
-> 4158     ds = self._to_temp_dataset().pad(
   4159         pad_width=pad_width,
   4160         mode=mode,
   4161         stat_length=stat_length,
   4162         constant_values=constant_values,
   4163         end_values=end_values,
   4164         reflect_type=reflect_type,
   4165         **pad_width_kwargs,
   4166     )
   4167     return self._from_temp_dataset(ds)

File ~/Documents/Work/Code/xarray/xarray/core/dataset.py:7368, in Dataset.pad(self, pad_width, mode, stat_length, constant_values, end_values, reflect_type, **pad_width_kwargs)
   7366     variables[name] = var
   7367 elif name in self.data_vars:
-> 7368     variables[name] = var.pad(
   7369         pad_width=var_pad_width,
   7370         mode=mode,
   7371         stat_length=stat_length,
   7372         constant_values=constant_values,
   7373         end_values=end_values,
   7374         reflect_type=reflect_type,
   7375     )
   7376 else:
   7377     variables[name] = var.pad(
   7378         pad_width=var_pad_width,
   7379         mode=coord_pad_mode,
   7380         **coord_pad_options,  # type: ignore[arg-type]
   7381     )

File ~/Documents/Work/Code/xarray/xarray/core/variable.py:1360, in Variable.pad(self, pad_width, mode, stat_length, constant_values, end_values, reflect_type, **pad_width_kwargs)
   1357 if reflect_type is not None:
   1358     pad_option_kwargs["reflect_type"] = reflect_type  # type: ignore[assignment]
-> 1360 array = np.pad(  # type: ignore[call-overload]
   1361     self.data.astype(dtype, copy=False),
   1362     pad_width_by_index,
   1363     mode=mode,
   1364     **pad_option_kwargs,
   1365 )
   1367 return type(self)(self.dims, array)

File <__array_function__ internals>:5, in pad(*args, **kwargs)

File ~/miniconda3/envs/py39/lib/python3.9/site-packages/numpy/lib/arraypad.py:803, in pad(array, pad_width, mode, **kwargs)
    801     for axis, width_pair, value_pair in zip(axes, pad_width, values):
    802         roi = _view_roi(padded, original_area_slice, axis)
--> 803         _set_pad_area(roi, axis, width_pair, value_pair)
    805 elif mode == "empty":
    806     pass  # Do nothing as _pad_simple already returned the correct result

File ~/miniconda3/envs/py39/lib/python3.9/site-packages/numpy/lib/arraypad.py:147, in _set_pad_area(padded, axis, width_pair, value_pair)
    130 """
    131 Set empty-padded area in given dimension.
    132 
   (...)
    144     broadcastable to the shape of `arr`.
    145 """
    146 left_slice = _slice_at_axis(slice(None, width_pair[0]), axis)
--> 147 padded[left_slice] = value_pair[0]
    149 right_slice = _slice_at_axis(
    150     slice(padded.shape[axis] - width_pair[1], None), axis)
    151 padded[right_slice] = value_pair[1]

ValueError: cannot convert float NaN to integer