add

chean.wei.khor · chean.wei.khor · commit 93aadbe18c44 · 2022-03-22T23:59:57.000+08:00
diff --git a/pandas/core/indexes/interval.py b/pandas/core/indexes/interval.py
@@ -956,7 +956,7 @@ def interval_range(
     freq=None,
     name: Hashable = None,
     closed: lib.NoDefault = lib.no_default,
-    inclusive: str = "both",
+    inclusive: str | None = None,
 ) -> IntervalIndex:
     """
     Return a fixed frequency IntervalIndex.
