def load(self, requirements_file=None):
        """Load or reload requirements from a requirements.txt file.

        :param requirements_file: if not given, the filename used from
            initialization will be read again.
        """
        if requirements_file is None:
            requirements_file = self.filename
            if requirements_file is None:
                raise ValueError("no filename provided")
        elif isinstance(requirements_file, text_type):
            requirements_file = Path(requirements_file)
        self.clear()
        with requirements_file.open() as f:
            self.loads(f.read())

        if isinstance(requirements_file, (text_type, Path)):
            self.filename = requirements_file
def approve(self, user_id=None, service=""):
        """
        Approve the verification attempt for user

        Valid attempt statuses when calling this method:
            `submitted`, `approved`, `denied`

        After method completes:
            status is set to `approved`
            expiry_date is set to one year from now
        """
        self.expiry_date = now() + timedelta(
            days=settings.VERIFY_STUDENT["DAYS_GOOD_FOR"]
        )
        super(SoftwareSecurePhotoVerification, self).approve(user_id, service)