rename the variable s to ser in both tests

Author: niruta25

pandas/tests/frame/test_api.py

@@ -406,16 +406,16 @@ def test_inspect_getmembers(self):
     def test_setitem_series_alignment_documentation(self):
         # Test that Series assignment aligns by index as documented.
         df = DataFrame({"A": [1, 2, 3]}, index=[0, 1, 2])
-        s = Series([10, 20], index=[1, 3])
-        df["B"] = s
+        ser = Series([10, 20], index=[1, 3])
+        df["B"] = ser
         expected = DataFrame({"A": [1, 2, 3], "B": [np.nan, 10, np.nan]})
         tm.assert_frame_equal(df, expected)
 
     def test_setitem_series_partial_alignment(self):
         # Test Series assignment with partial index match.
         df = DataFrame({"A": [1, 2, 3, 4]}, index=["a", "b", "c", "d"])
-        s = Series([100, 200], index=["b", "d"])
-        df["B"] = s
+        ser = Series([100, 200], index=["b", "d"])
+        df["B"] = ser
         expected = DataFrame(
             {"A": [1, 2, 3, 4], "B": [np.nan, 100, np.nan, 200]},
             index=["a", "b", "c", "d"],