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 submit(self, copy_id_photo_from=None):
        """
        Submit our verification attempt to Software Secure for validation. This
        will set our status to "submitted" if the post is successful, and
        "must_retry" if the post fails.

        Keyword Arguments:
            copy_id_photo_from (SoftwareSecurePhotoVerification): If provided, re-send the ID photo
                data from this attempt.  This is used for reverification, in which new face photos
                are sent with previously-submitted ID photos.

        """
        try:
            response = self.send_request(copy_id_photo_from=copy_id_photo_from)
            if response.ok:
                self.submitted_at = now()
                self.status = "submitted"
                self.save()
            else:
                self.status = "must_retry"
                self.error_msg = response.text
                self.save()
        except Exception:       # pylint: disable=broad-except
            log.exception(
                u'Software Secure submission failed for user %s, setting status to must_retry',
                self.user.username
            )
            self.status = "must_retry"
            self.save()