def send_unsent(self):
        for i in range(len(self.unsent)):
            recipients, msg_string = self.unsent.pop(i)
            self._attempt_send(recipients, msg_string)
Uploads a file to the Document List feed.
dataset/ETHPy150Open kootenpv/yagmail/yagmail/yagmail.py/SMTP.send_unsent--crossover with--dataset/ETHPy150Open acil-bwh/SlicerCIP/Scripted/attic/PicasaSnap/gdata/docs/service.py/DocsService._UploadFile