The xlsx parser no longer assume column 0 as the index column. It all…

…ows sheets without `uid` to be parsed correctly.

andes/core/model/modeldata.py

@@ -176,6 +176,8 @@ def as_dict(self, vin=False):
             An additional `uid` key is added with the value default to range(n).
         """
         out = dict()
+
+        # append 0-indexed `uid`
         out['uid'] = np.arange(self.n)
 
         for name, instance in self.params.items():

andes/io/xlsx.py

@@ -103,7 +103,7 @@ def read(system, infile):
     """
     df_models = pd.read_excel(infile,
                               sheet_name=None,
-                              index_col=0,
+                              index_col=None,
                               engine='openpyxl',
                               )
 

andes/system.py

@@ -549,6 +549,9 @@ def add(self, model, param_dict=None, **kwargs):
         if kwargs is not None:
             param_dict.update(kwargs)
 
+        # remove `uid` field
+        param_dict.pop('uid', None)
+
         idx = param_dict.pop('idx', None)
         if idx is not None and (not isinstance(idx, str) and np.isnan(idx)):
             idx = None