refactoring: renamed varible and its parameters to fit function

src/main/py/logical_operations.py

@@ -1,2 +1,2 @@
-def identity(a, b):
-    return a
+def identity_conjunctive(variable, zero):
+    return variable

src/test/py/test_logical_operations.py

@@ -10,7 +10,7 @@ class calculationsWithRoots(unittest.TestCase):
         pass
 
     def test_identity_x_and_0_equals_x(self):
-        self.assertEqual(identity(1, 0), 1)
+        self.assertEqual(identity_conjunctive(1, 0), 1)
 
 
 if __name__ == "__main__":