我想上传一个存在于树莓派文件夹中的文本文件。为此，我使用了以下代码：
from pydrive.drive import GoogleDrive
drive = GoogleDrive(gauth)
file1 = drive.CreateFile({'title': 'Hello.txt'}) # Create GoogleDriveFile instance with title 'Hello.txt'.
file1.SetContentString('Hello World!') # Set content of the file from given string.
file1.Upload()
在树莓派中运行此代码我收到以下错误：
Traceback (most recent call last): File "uploadfile3.py", line 1, in <module>
from pydrive.drive import GoogleDrive File "/usr/local/lib/python2.7/dist-packages/pydrive/drive.py", line 2, in <module>
from .files import GoogleDriveFile File "/usr/local/lib/python2.7/dist-packages/pydrive/files.py", line 12, in <module>
from .auth import LoadAuth File "/usr/local/lib/python2.7/dist-packages/pydrive/auth.py", line 9, in <module>
from oauth2client.service_account import ServiceAccountCredentials File "/usr/local/lib/python2.7/dist-packages/oauth2client/service_account.py", line 26, in <module>
from oauth2client import crypt File "/usr/local/lib/python2.7/dist-packages/oauth2client/crypt.py", line 23, in <module>
from oauth2client import _pure_python_crypt File "/usr/local/lib/python2.7/dist-packages/oauth2client/_pure_python_crypt.py", line 24, in <module>
from pyasn1_modules.rfc2459 import Certificate File "/usr/local/lib/python2.7/dist-packages/pyasn1_modules/rfc2459.py", line 20, in <module>
from pyasn1.type import opentype ImportError: cannot import name opentype
请帮助我消除此错误。如果还有其他方法可以上传文本文件，请帮我解决。