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Support notebook code to write any file format and allow user to 'Export' (download)

Currently, DSXL only supports writing .csv files in Data Sets. In that case, the user can view the file and export/download the file to the local machine for further processing.
Other file formats can be written, but the file cannot be viewed or exported.
DSXL needs to support any file format that notebooks want to write and allow the user to download these file individually.

This is in particularly important for debugging decision optimization models.
Generated optimization models can be exported by the doCplex library as '.lp' files, which is a readable, textual format for optimization models.
The ability to get access to the .lp file of a model is crucial for serious optimization model development.

Other examples are image files.

The current work-around is:
1. Write the file to datasets
2. Use bash commands in a Jupyter notebook to rename the file extension to .csv. (For example using '%mv $original_name $csv_name')
3. Export the file to the local machine.
4. Rename the file extension back to the original.
5. Delete the file from Data Sets
This work-around works, but is ugly and not user friendly.

Work-around update: instead of a bash command for the rename, you can also use Python using 'os.rename(original_name, csv_name)'

  • Victor Terpstra
  • Mar 14 2018
  • Planned
Role Summary Data Scientist
  • Attach files
  • Brittany Bogle commented
    March 14, 2018 03:39

    I agree... I’ve run into this issue with trying to get something as common as a PDF or PNG off of DSX local and onto my machine. Users need to be able to move files easily from DSX local to their machine.

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