CLN: MultiIndex.drop_duplicates (#48592)

twoertwein · web-flow · commit 3c0215db3b7b · 2022-09-19T16:03:36.000-07:00
* CLN: MultiIndex.drop_duplicates

* adjust test
diff --git a/pandas/core/indexes/multi.py b/pandas/core/indexes/multi.py
@@ -3888,10 +3888,6 @@ def set_names(  # type: ignore[override]
     # base class "Index" defined the type as "Callable[[Index, Any, bool], Any]")
     rename = set_names  # type: ignore[assignment]
 
-    @deprecate_nonkeyword_arguments(version=None, allowed_args=["self"])
-    def drop_duplicates(self, keep: str | bool = "first") -> MultiIndex:
-        return super().drop_duplicates(keep=keep)
-
     # ---------------------------------------------------------------
     # Arithmetic/Numeric Methods - Disabled
 
diff --git a/pandas/tests/indexes/multi/test_duplicates.py b/pandas/tests/indexes/multi/test_duplicates.py
@@ -332,7 +332,7 @@ def test_multi_drop_duplicates_pos_args_deprecation():
     idx = MultiIndex.from_arrays([[1, 2, 3, 1], [1, 2, 3, 1]])
     msg = (
         "In a future version of pandas all arguments of "
-        "MultiIndex.drop_duplicates will be keyword-only"
+        "Index.drop_duplicates will be keyword-only"
     )
     with tm.assert_produces_warning(FutureWarning, match=msg):
         result = idx.drop_duplicates("last")

Original file line number	Diff line number	Diff line change
`@@ -332,7 +332,7 @@ def test_multi_drop_duplicates_pos_args_deprecation():`
`332`	`332`	`idx = MultiIndex.from_arrays([[1, 2, 3, 1], [1, 2, 3, 1]])`
`333`	`333`	`msg = (`
`334`	`334`	`"In a future version of pandas all arguments of "`
`335`		`- "MultiIndex.drop_duplicates will be keyword-only"`
	`335`	`+ "Index.drop_duplicates will be keyword-only"`
`336`	`336`	`)`
`337`	`337`	`with tm.assert_produces_warning(FutureWarning, match=msg):`
`338`	`338`	`result = idx.drop_duplicates("last")`