wpUploadMedia.py

def upload_media(self, filePath, alt_text="", caption=""):
        new_session = self.session
        data = open(filePath, "rb").read()
        new_session.headers.update(
            {
                "Content-Type": "",
                "Content-Disposition": f'attachment; filename="{filePath}"',
            }
        )

        upload_media_endpoint = f"{self._endpoint}media"

        response = new_session.post(
            upload_media_endpoint,
            json={"alt_text": alt_text, "caption": caption},
            data=data,
        )
        return response.json()