Tempfile cleanup

[fyrdahl]

Problem: It appears that temp files are accumulating when repeatedly running scripts using bartpy. This behavior is different from the "old" Python wrapper found within BART.

Expected outcome: The wrapper should delete temp files

Observed outcome: Temp files are not deleted

Proposed solution: Either using context managers or keeping track of created files and deleting manually. I believe the latter is how the old wrapper does it. I would be happy to work on a patch for this, but I felt like it may involve some substantial changes, so I decided to open an issue for potential discussions first.

MWE:

import bartpy.tools as bart
phantom = bart.phantom()

du -sh /tmp
for i in {1..100}
do
    python3 test.py
done
du -sh /tmp

Output:

264K    /tmp
14M     /tmp

The same problem does not occur if using the "old" Python wrapper:

from bart import bart
phantom = bart(1,'phantom')

Output:

264K    /tmp
264K    /tmp