start n=1

Author: MarcoGorelli

pandas/tests/io/test_clipboard.py

@@ -258,7 +258,11 @@ def test_round_trip_frame_string(self, df):
     # Two character separator is not supported in to_clipboard
     # Test that multi-character separators are not silently passed
     def test_excel_sep_warning(self, df):
-        with tm.assert_produces_warning():
+        with tm.assert_produces_warning(
+            UserWarning,
+            match="to_clipboard in excel mode requires a single character separator.",
+            check_stacklevel=False,
+        ):
             df.to_clipboard(excel=True, sep=r"\t")
 
     # Separator is ignored when excel=False and should produce a warning

pandas/util/_exceptions.py

@@ -41,7 +41,7 @@ def find_stack_level(frame) -> int:
     test_dir = os.path.join(pkg_dir, "tests")
 
     # https://stackoverflow.com/questions/17407119/python-inspect-stack-is-slow
-    n = 0
+    n = 1
     while frame:
         fname = inspect.getfile(frame)
         if fname.startswith(pkg_dir) and not fname.startswith(test_dir):