Helper function to show as log repeated labels in Matrix exception

Author: jmarinllao

src/diffupy/matrix.py

@@ -7,7 +7,8 @@
 
 import numpy as np
 
-from .utils import get_label_ix_mapping, get_label_list_graph, get_laplacian, decode_labels, get_idx_scores_mapping
+from .utils import get_label_ix_mapping, get_label_list_graph, get_laplacian, decode_labels, get_idx_scores_mapping, \
+    get_repeated_labels
 
 log = logging.getLogger(__name__)
 
@@ -117,7 +118,8 @@ def validate_labels(self):
         if self.rows_labels:
             self.rows_labels = decode_labels(self.rows_labels)
             if len(self.rows_labels) != len(set(self.rows_labels)):
-                raise Exception('Duplicate row labels in Matrix.')
+                dup = get_repeated_labels(self.rows_labels)
+                raise Exception('Duplicate row labels in Matrix. /n duplicated number: {} /n duplicated list: {}'.format(len(dup),  dup))
 
         if hasattr(self, '_cols_labels'):
             self._cols_labels = decode_labels(self.cols_labels)

src/diffupy/utils.py

@@ -85,6 +85,18 @@ def get_label_list_graph(graph: nx.Graph, label: str) -> List:
     raise Warning('Could not get a label list from graph.')
 
 
+def get_repeated_labels(labels):
+
+    seen = set()
+    rep = []
+    for x in labels:
+        if x in seen:
+            rep.append(x)
+        seen.add(x)
+
+    return rep
+
+
 def get_label_ix_mapping(labels):
     """Get label to mat index mappings."""
     return {label: i for i, label in enumerate(labels)}