TESTS PASSED ! YAY !

Author: tm9k1

pandas/_libs/lib.pyx

@@ -15,6 +15,8 @@ from cpython.datetime cimport (PyDateTime_Check, PyDate_Check,
                                PyDateTime_IMPORT)
 PyDateTime_IMPORT
 
+from fractions import Fraction
+from numbers import Number
 
 import numpy as np
 cimport numpy as cnp
@@ -153,8 +155,8 @@ def is_scalar(val: object) -> bint:
             or is_decimal(val)
             or is_interval(val)
             or util.is_offset_object(val)
-            or isinstance(val,Number)
-            or ininstance(val,Fraction))
+            or isinstance(val, Number)
+            or isinstance(val, Fraction))
 
 def item_from_zerodim(val: object) -> object:
     """

pandas/tests/dtypes/test_inference.py

@@ -13,7 +13,8 @@
 import numpy as np
 import pytz
 import pytest
-
+from numbers import Number
+from fractions import Fraction
 import pandas as pd
 from pandas._libs import tslib, lib, missing as libmissing
 from pandas import (Series, Index, DataFrame, Timedelta,
@@ -1183,6 +1184,10 @@ def test_is_scalar_pandas_containers(self):
             assert not is_scalar(Panel([[[1]]]))
         assert not is_scalar(Index([]))
         assert not is_scalar(Index([1]))
+    
+    def tes_is_scalar_pep_3141(self):
+        assert is_scalar(Number())
+        assert is_scalar(Fraction())
 
 
 def test_datetimeindex_from_empty_datetime64_array():