Add _validate_shape

Author: makbigc

pandas/core/arrays/base.py

@@ -891,6 +891,10 @@ def _add_comparison_ops(cls):
         cls.__le__ = cls._create_comparison_method(operator.le)
         cls.__ge__ = cls._create_comparison_method(operator.ge)
 
+    def _validate_shape(self, other):
+        if len(self) != len(other):
+            raise ValueError('Lengths must match to compare')
+
 
 class ExtensionScalarOpsMixin(ExtensionOpsMixin):
     """

pandas/core/arrays/period.py

@@ -68,8 +68,7 @@ def wrapper(self, other):
         elif isinstance(other, cls):
             self._check_compatible_with(other)
 
-            if other.ndim > 0 and len(self) != len(other):
-                raise ValueError('Lengths must match to compare')
+            self._validate_shape(other)
 
             if not_implemented:
                 return NotImplemented