Google colaboratory google colaboratory:无法执行单元格

最近，我尝试使用谷歌免费GPU来尝试一些新东西。我按照教程设置了我的第一个代码笔记本。 但是在我首先运行这些代码之后，为了安装必要的库并执行授权

!apt-get install -y -qq software-properties-common python-software-properties module-init-tools

!add-apt-repository -y ppa:alessandro-strada/ppa 2>&1 > /dev/null

!apt-get update -qq 2>&1 > /dev/null

!apt-get -y install -qq google-drive-ocamlfuse fuse

from google.colab import auth

auth.authenticate_user()

from oauth2client.client import GoogleCredentials

creds = GoogleCredentials.get_application_default()

import getpass

!google-drive-ocamlfuse -headless -id={creds.client_id} -secret={creds.client_secret} < /dev/null 2>&1 | grep URL

vcode = getpass.getpass()

!echo {vcode} | google-drive-ocamlfuse -headless -id={creds.client_id} -secret={creds.client_secret}

！apt get install-y-qq软件属性公共python软件属性模块初始化工具
!添加apt存储库-y ppa:alessandro strada/ppa 2>&1>/dev/null
!apt获取更新-qq 2>&1>/dev/null
!apt get-y安装-qq谷歌硬盘ocamlfuse保险丝
从google.colab导入验证
auth.authenticate_user（）
从oauth2client.client导入Google凭据
creds=GoogleCredentials.get\u application\u default（）
导入getpass
!googledrive ocamlfuse-headless-id={creds.client_id}-secret={creds.client_secret}&1 | grep URL
vcode=getpass.getpass（）
!echo{vcode}|谷歌硬盘ocamlfuse-headless-id={creds.client_id}-secret={creds.client_secret}

当我复制验证码并将其粘贴到文本框中时，一切都变得很奇怪。我无法运行execute cell并获取以下消息：

错误

无法执行单元格。无法向运行时发送执行消息：错误：未连接到运行时。

详情：

Not connected to a runtime.
eM@https://colab.research.google.com/v2/external/external_polymer_binary.js?vrz=colab_20180307_085323-RC00_188182835:2574:310

bM/<@https://colab.research.google.com/v2/external/external_polymer_binary.js?vrz=colab_20180307_085323-RC00_188182835:1903:489

mg/e.child</e.onFulfilled<@https://colab.research.google.com/v2/external/external_polymer_binary.js?vrz=colab_20180307_085323-RC00_188182835:640:214

wg@https://colab.research.google.com/v2/external/external_polymer_binary.js?vrz=colab_20180307_085323-RC00_188182835:644:292

sg@https://colab.research.google.com/v2/external/external_polymer_binary.js?vrz=colab_20180307_085323-RC00_188182835:644:164

ag.prototype.executeCallbacks_@https://colab.research.google.com/v2/external/external_polymer_binary.js?vrz=colab_20180307_085323-RC00_188182835:643:359

Xf@https://colab.research.google.com/v2/external/external_polymer_binary.js?vrz=colab_20180307_085323-RC00_188182835:634:564

未连接到运行时。
eM@https：//colab.research.google.com/v2/external/external\u polymer\u binary.js？vrz=colab\u 20180307\u 085323-RC00\u 188182835:2574:310
你到底想做什么？如果您只是尝试将google drive连接到google colab实例，则只需运行两行代码：

  from google.colab import drive
  drive.mount('/content/foo_directory')