implement

Author: TomAugspurger

pandas/core/indexes/base.py

@@ -1202,6 +1202,38 @@ def is_monotonic_decreasing(self):
         """
         return self._engine.is_monotonic_decreasing
 
+    @property
+    def is_strictly_monotonic_increasing(self):
+        """return if the index is strictly monotonic increasing
+        (only increasing) values
+
+        Examples
+        --------
+        >>> Index([1, 2, 3]).is_strictly_monotonic_increasing
+        True
+        >>> Index([1, 2, 2]).is_strictly_monotonic_increasing
+        False
+        >>> Index([1, 3, 2]).is_strictly_monotonic_increasing
+        False
+        """
+        return self.is_unique and self.is_monotonic_increasing
+
+    @property
+    def is_strictly_monotonic_decreasing(self):
+        """return if the index is strictly monotonic decreasing
+        (only decreasing) values
+
+        Examples
+        --------
+        >>> Index([3, 2, 1]).is_strictly_monotonic_decreasing
+        True
+        >>> Index([3, 2, 2]).is_strictly_monotonic_decreasing
+        False
+        >>> Index([3, 1, 2]).is_strictly_monotonic_decreasing
+        False
+        """
+        return self.is_unique and self.is_monotonic_decreasing
+
     def is_lexsorted_for_tuple(self, tup):
         return True