def freeze(h, output_yaml, resolve, groups):
    """Output installed packages."""
    if not groups:
        groups = filter(lambda group: not group.lower().startswith("bower"),
                        h.requirements.keys())
    else:
        groups = [text_type.strip(group) for group in groups.split(",")]

    if output_yaml:
        for requirements in h.requirements.values():
            for requirement in requirements:
                if resolve and not requirement.version:
                    requirement.load_installed_version()
        click.echo(h.requirements.yaml)
    else:
        for group in groups:
            if not h.requirements[group]:
                continue
            click.echo("# {}".format(group))
            for requirement in h.requirements[group]:
                if resolve and not requirement.version:
                    requirement.load_installed_version()
                click.echo(str(requirement))
def upload_photo_id_image(self, img_data):
        """
        Upload an the user's photo ID image. `img_data` should be a raw
        bytestream of a PNG image. This method will take the data, encrypt it
        using a randomly generated AES key, encode it with base64 and save it
        to the storage backend. The random key is also encrypted using Software
        Secure's public RSA key and stored in our `photo_id_key` field.

        Yes, encoding it to base64 adds compute and disk usage without much real
        benefit, but that's what the other end of this API is expecting to get.
        """
        # Skip this whole thing if we're running acceptance tests or if we're
        # developing and aren't interested in working on student identity
        # verification functionality. If you do want to work on it, you have to
        # explicitly enable these in your private settings.
        if settings.FEATURES.get('AUTOMATIC_VERIFY_STUDENT_IDENTITY_FOR_TESTING'):
            # fake photo id key is set only for initial verification
            self.photo_id_key = 'fake-photo-id-key'
            self.save()
            return

        aes_key = random_aes_key()
        rsa_key_str = settings.VERIFY_STUDENT["SOFTWARE_SECURE"]["RSA_PUBLIC_KEY"]
        rsa_encrypted_aes_key = rsa_encrypt(aes_key, rsa_key_str)

        # Save this to the storage backend
        path = self._get_path("photo_id")
        buff = ContentFile(encrypt_and_encode(img_data, aes_key))
        self._storage.save(path, buff)

        # Update our record fields
        self.photo_id_key = rsa_encrypted_aes_key.encode('base64')
        self.save()