added test for returning the number if the function is no string as well as corresponding functionality

src/main/py/read_math_function.py

@@ -49,3 +49,5 @@ def calculate_constant_string(string):
 def simplify_easy_math_function(type, function):
     if type != "v":
         return False
+    if is_string(function) == False:
+        return function

src/test/py/test_read_math_function.py

@@ -34,6 +34,8 @@ class read_function(unittest.TestCase):
 
     def test_easy_function_wrong_type(self):
         self.assertEqual(simplify_easy_math_function("a", "42x"), False)
+    def test_easy_function_number_as_function_return(self):
+        self.assertEqual(simplify_easy_math_function("v", 42), 42)
 
 if __name__ == '__main__':
     unittest.main()