tests.py

self.stats = {
            ('myfile.py', 1, 'function_name'):
            (1,2,3,4,
                {
                    ('myfile2.py', 1, 'function_name_2'):
                        (1,2,3,4)
                }
            ),
            ('myfile3.py', 1, 'function_name_3'):
                (1,2,3,4)
        }