replace .from_records with default constructor

pandas/tests/reshape/merge/test_merge.py

@@ -2091,19 +2091,19 @@ def test_right_merge_preserves_row_order():
         ("Carl", "Canada", 30),
     ]
     columns = ["name", "country", "population"]
-    pop = DataFrame.from_records(population, columns=columns)
+    pop = DataFrame(population, columns=columns)
 
     people = [("Abe", "America"), ("Beth", "Bulgaria"), ("Carl", "Canada")]
     columns = ["name", "country"]
-    ppl = DataFrame.from_records(people, columns=columns)
+    ppl = DataFrame(people, columns=columns)
 
     expected_data = [
         ("Abe", "America", np.nan),
         ("Beth", "Bulgaria", 7),
         ("Carl", "Canada", 30),
     ]
     expected_cols = ["name", "country", "population"]
-    expected = DataFrame.from_records(expected_data, columns=expected_cols)
+    expected = DataFrame(expected_data, columns=expected_cols)
 
     result = pop.merge(ppl, on=("name", "country"), how="right")
 
@@ -2117,19 +2117,19 @@ def test_left_merge_preserves_row_order():
         ("Carl", "Canada", 30),
     ]
     columns = ["name", "country", "population"]
-    pop = DataFrame.from_records(population, columns=columns)
+    pop = DataFrame(population, columns=columns)
 
     people = [("Abe", "America"), ("Beth", "Bulgaria"), ("Carl", "Canada")]
     columns = ["name", "country"]
-    ppl = DataFrame.from_records(people, columns=columns)
+    ppl = DataFrame(people, columns=columns)
 
     expected_data = [
         ("Abe", "America", np.nan),
         ("Beth", "Bulgaria", 7),
         ("Carl", "Canada", 30),
     ]
     expected_cols = ["name", "country", "population"]
-    expected = DataFrame.from_records(expected_data, columns=expected_cols)
+    expected = DataFrame(expected_data, columns=expected_cols)
 
     result = ppl.merge(pop, on=("name", "country"), how="left")