generate 50 characters long for django

1def get_random_secret_key():
2    """
3    Return a 50 character random string usable as a SECRET_KEY setting value.
4    """
5    chars = 'abcdefghijklmnopqrstuvwxyz0123456789!@#$%^&*(-_=+)'
6    return get_random_string(50, chars)