def not_found(message=None):
    message = message or 'Page not found.'
    return error(404, message, 'errors/404.html')
Tests that it chooses the best strategy.
dataset/ETHPy150Open rehandalal/buchner/buchner/project-template/PROJECTMODULE/errors.py/not_found--crossover with--dataset/ETHPy150Open Axelrod-Python/Axelrod/axelrod/tests/unit/test_qlearner.py/TestArrogantQLearner.test_strategy