:move: valuerror -> notimplementederror

Author: MarcoGorelli

pandas/_libs/tslibs/timestamps.pyx

@@ -1412,12 +1412,12 @@ class Timestamp(_Timestamp):
         try:
             return self.to_pydatetime().strftime(format)
         except ValueError as err:
-            raise ValueError(
+            raise NotImplementedError(
                 "strftime not yet supported on Timestamps which "
                 "are outside the range of Python's standard library. "
                 "For now, please call the components you need (such as `.year` "
                 "and `.month`) and construct your string from there."
-            )
+            ) from err
 
     # Issue 25016.
     @classmethod

pandas/tests/scalar/timestamp/test_timestamp.py

@@ -1114,5 +1114,5 @@ def test_negative_dates():
         "Python's standard library. For now, please call the components you need "
         r"\(such as `.year` and `.month`\) and construct your string from there.$"
     )
-    with pytest.raises(ValueError, match=msg):
+    with pytest.raises(NotImplementedError, match=msg):
         ts.strftime("%Y")