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 get_organizations(self):
        legis = Organization('Minnesota Legislature', classification='legislature')

        upper = Organization('Minnesota Senate', classification='upper',
                             parent_id=legis._id)
        lower = Organization('Minnesota House of Representatives',
                             classification='lower', parent_id=legis._id)

        for n in range(1, 68):
            upper.add_post(label=str(n), role='Senator',
                           division_id='ocd-division/country:us/state:mn/sldu:{}'.format(n))
            lower.add_post(label=str(n) + 'A', role='Representative',
                           division_id='ocd-division/country:us/state:mn/sldl:{}a'.format(n))
            lower.add_post(label=str(n) + 'B', role='Representative',
                           division_id='ocd-division/country:us/state:mn/sldl:{}b'.format(n))

        yield legis
        yield upper
        yield lower