diff --git a/src/test/py/test_read_math_function.py b/src/test/py/test_read_math_function.py
index 7597ff7..f68f19a 100644
--- a/src/test/py/test_read_math_function.py
+++ b/src/test/py/test_read_math_function.py
@@ -5,25 +5,35 @@ from unittest.mock import patch
 class read_function(unittest.TestCase):
     def test_constant_without_calculation(self):
         self.assertEqual(simplify_constant("c", 42), 42)
+
     def test_constant_no_c(self):
         self.assertEqual(simplify_constant("e", "42*e^x"), False)
+
     def test_constant_isstring_true(self):
         self.assertEqual(is_string("42*e^x"), True)
+
     def test_constant_isstring_false(self):
         self.assertEqual(is_string(42), False)
+
     def test_constant_isallowed_string_true(self):
         self.assertEqual(is_allowed_string("c", "42^(2)+1-3*4/3"), True)
+
     def test_constant_isallowed_string_false(self):
         self.assertEqual(is_allowed_string("c", "42^(2)+1-3*4/3x"), False)
+
     def test_constant_calculate_without_pow(self):
         self.assertEqual(calculate_constant_string("42+1-3*4/3"), 39)
+
     def test_constant_calculate_with_pow(self):
         self.assertEqual(calculate_constant_string("42^(2)+1-3*4/3"), 1761)
+
     def test_constant_calculate_string_decision(self):
         self.assertEqual(simplify_constant("c", "42^(2)+1-3*4/3"), 1761)
+
     def test_constant_string_not_allowed_decision(self):
         self.assertEqual(simplify_constant("c", "42^(2)+1-3*4/3x"), False)
 
+
     @patch('builtins.input', side_effect=["x"])
     def test_read_math_function_false_if_enter_x(self, mock_input):
         result = read_math_function()