fix tempfile

[barneydobson]

Description

Something to do with tempfile preventing some people from running the notebooks locally

Fixes #364

Type of change

• Documentation (non-breaking change that adds or improves the documentation)
• New feature (non-breaking change which adds functionality)
• Optimization (non-breaking, back-end change that speeds up the code)
• Bug fix (non-breaking change which fixes an issue)
• Breaking change (whatever its nature)

Key checklist

• All tests pass (eg. python -m pytest)
• The documentation builds and looks OK (eg. python -m sphinx -b html docs docs/build)
• Pre-commit hooks run successfully (eg. pre-commit run --all-files)

Further checks

• Code is commented, particularly in hard-to-understand areas
• Tests added or an issue has been opened to tackle that in the future. (Indicate issue here: # (issue))

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 88.09%. Comparing base (6682860) to head (d315251).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #414   +/-   ##
=======================================
  Coverage   88.09%   88.09%           
=======================================
  Files          22       22           
  Lines        2252     2252           
  Branches      282      282           
=======================================
  Hits         1984     1984           
  Misses        191      191           
  Partials       77       77           

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[barneydobson]

@meghnathomas did you want to try this branch to see if it fixes your problem?

I already merged it because my office is too hot to concentrate, but hopefully now works, let me know any issues. I'll implement the same fix on the other two notebook issues #395 and #396