How Do I Upload a File from a Notebook Instance to OBS or Download a File from OBS to a Notebook Instance in ModelArts?

Using SDK to Upload and Download a File

Call the ModelArts SDK for downloading a file from OBS.

Sample code: Download file1.txt from OBS to /home/ma-user/work/ in the notebook instance. The bucket name, folder name, and file name are customizable.

from modelarts.session import Session
session = Session()
session.obs.download_file(src_obs_file="obs://bucket-name/dir1/file1.txt", dst_local_dir="/home/
ma-user/work/")

Call the ModelArts SDK for downloading a folder from OBS.

Sample code: Download dir1 from OBS to /home/ma-user/work/ in the notebook instance. The bucket name and folder name are customizable.

from modelarts.session import Session
session = Session()
session.obs.download_dir(src_obs_dir="obs://bucket-name/dir1/", dst_local_dir="/home/ma-user/work/")

Call the ModelArts SDK to upload a file to OBS.

Sample code: Upload file1.txt in the notebook instance to OBS bucket obs://bucket-name/dir1/. The bucket name, folder name, and file name are customizable.

from modelarts.session import Session
session = Session()
session.obs.upload_file(src_local_file='/home/ma-user/work/file1.txt', dst_obs_dir='obs://bucket-name/dir1/')

Call the ModelArts SDK to upload a folder to OBS.

Sample code: Upload /work/ in the notebook instance to obs://bucket-name/dir1/work/ of bucket-name. The bucket name and folder name are customizable.

from modelarts.session import Session
session = Session()
session.obs.upload_dir(src_local_dir='/home/ma-user/work/', dst_obs_dir='obs://bucket-name/dir1/')

Troubleshooting

If you download a file from OBS to your notebook instance and the system displays error message "Permission denied", perform the following operations for troubleshooting:

• Ensure that the target OBS bucket and notebook instance are in the same region. OBS buckets cannot be accessed across regions. For details, see Checking Whether the OBS Bucket and ModelArts Are in the Same Region.