Define a simple list

In the code you'll find a simple function simple_list returning an empty list. Modify the program and return instead a list with the elements 1, 'a' and True. Example:

print(simple_list())  # [1, 'a', True]
import unittest


class SimpleListTestCase(unittest.TestCase):

    def test_list_is_correct(self):
        self.assertEqual(simple_list(), [1, 'a', True])