feature: add native xarray support and concatenation of DataFrames/DataArrays

qcodes/dataset/data_set.py

@@ -8,6 +8,7 @@
 import uuid
 from dataclasses import dataclass
 from queue import Empty, Queue
+from itertools import starmap
 from threading import Thread
 from typing import (Hashable, Iterator, TYPE_CHECKING, Any, Callable, Dict,
                     List, Mapping, MutableMapping, Optional, Sequence, Set,
@@ -949,22 +950,17 @@ def _parameter_data_identical(param_dict_a: Dict[str, numpy.ndarray],
 
     def _same_setpoints(self, datadict: ParameterData) -> bool:
 
-        def _get_setpoints(dd: ParameterData) -> Iterator[Dict[str, numpy.ndarray]]:
+        def _sp_iterator(dd: ParameterData) -> Iterator[Dict[str, numpy.ndarray]]:
 
             for dep_name, param_dict in dd.items():
                 out = {
                     name: vals for name, vals in param_dict.items() if name != dep_name
                 }
                 yield out
 
-        iterator = _get_setpoints(datadict)
+        iterator = _sp_iterator(datadict)
 
-        try:
-            first = next(iterator)
-        except StopIteration:
-            return True
-
-        return all(self._parameter_data_identical(first, rest) for rest in iterator)
+        return all(starmap(self._parameter_data_identical, iterator))
 
     def get_data_as_pandas_dataframe(self,
                                      *params: Union[str,