Use Index.duplicated() rather than MultiIndex.has_duplicates in Inter…

…face/Pattern validation due to pandas bug #9075, require pandas 0.15.0 to ensure presence of Index.duplicated().

neurokernel/pattern.py

@@ -74,14 +74,13 @@ def __init__(self, selector='', columns=['interface', 'io', 'type']):
         idx = self.sel.make_index(selector, names)
         self.__validate_index__(idx)
         self.data = pd.DataFrame(index=idx, columns=columns, dtype=object)
-        
+
     def __validate_index__(self, idx):
         """
         Raise an exception if the specified index will result in an invalid interface.
         """
 
-        if (hasattr(idx, 'has_duplicates') and idx.has_duplicates) or \
-                len(idx.unique()) < len(idx):
+        if idx.duplicated().any():
             raise ValueError('Duplicate interface index entries detected.')
 
     def __getitem__(self, key):
@@ -1177,16 +1176,14 @@ def __validate_index__(self, idx):
         """
 
         # Prohibit duplicate connections:
-        if (hasattr(idx, 'has_duplicates') and idx.has_duplicates) or \
-           len(idx.unique()) < len(idx):
+        if idx.duplicated().any():
             raise ValueError('Duplicate pattern entries detected.')
 
         # Prohibit fan-in connections (i.e., patterns whose index has duplicate
         # 'from' port identifiers):
         from_idx, to_idx = self.split_multiindex(idx, 
                                                  self.from_slice, self.to_slice)
-        if (hasattr(to_idx, 'has_duplicates') and to_idx.has_duplicates) or \
-           len(to_idx.unique()) < len(to_idx):
+        if to_idx.duplicated().any():
             raise ValueError('Fan-in pattern entries detected.')
 
         # Prohibit ports that both receive input and send output:

setup.py

@@ -75,7 +75,7 @@
             'networkx >= 1.9',
             'numexpr >= 2.3',
             'numpy >= 1.2.0',
-            'pandas >= 0.14.1',
+            'pandas >= 0.15.0',
             'ply >= 3.4',
             'pycuda >= 2014.1',
             'pyzmq >= 13.0',