fix(factory): treat explicit tzinfo=None the same as omitting tzinfo

arrow/factory.py

@@ -196,7 +196,7 @@ def get(self, *args: Any, **kwargs: Any) -> Arrow:
             arg_count = 3
 
         # tzinfo kwarg is not provided
-        if len(kwargs) == 1 and tz is None:
+        if len(kwargs) == 1 and "tzinfo" not in kwargs:
             arg_count = 3
 
         # () -> now, @ tzinfo or utc

tests/test_factory.py

@@ -294,6 +294,15 @@ def test_two_args_str_tzinfo(self):
             result._datetime, datetime(2013, 1, 1, tzinfo=ZoneInfo("US/Pacific"))
         )
 
+    def test_two_args_str_str_tzinfo_none(self):
+        # Regression test for issue #1259: explicit tzinfo=None should be
+        # treated the same as omitting tzinfo entirely.
+        result = self.factory.get("2025-01-01", "YYYY-MM-DD", tzinfo=None)
+        expected = self.factory.get("2025-01-01", "YYYY-MM-DD")
+
+        assert result == expected
+        assert result._datetime == datetime(2025, 1, 1, tzinfo=tz.tzutc())
+
     def test_two_args_twitter_format(self):
         # format returned by twitter API for created_at:
         twitter_date = "Fri Apr 08 21:08:54 +0000 2016"