# 1.基础篇 [Google Colab的基础使用](https://zhuanlan.zhihu.com/p/54389036) *** # 2.Google Colab初始化 ## 2.1安装必要的库 ```python !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} ``` ## 2.2挂在目录 google colab要挂载在当前目录 ```python !ls ``` 得到当前的目录![image-20210416184645628](D:\笔记\照片\image-20210416184645628.png) 进入当前文件夹,更换目录 ```python import sys from google.colab import drive # 这个命令是将Drive挂载到‘/content/drive’下,查看此时的目录就知道了 drive.mount('/content/drive') # 加入系统路径 sys.path.append('/content/drive/MyDrive/Palmprint') # 进入当前路径 %cd /content/drive/MyDrive/Palmprint ``` --- # 3.查看gup使用情况 ```python torch.cuda.is_available() cuda是否可用; torch.cuda.device_count() 返回gpu数量; torch.cuda.get_device_name(0) 返回gpu名字,设备索引默认从0开始; torch.cuda.current_device() 返回当前设备索引; !/opt/bin/nvidia-smi 查看GPU情况 ```