Mathematica is using definitions from other open files in the same folder.

I want variables not defined in a particular file to be treated as undefined variables. I do not want Mathematica to pick the expression of these variables from other files. Is there any way to go about this?

  • $\begingroup$ Maybe run Exit[] in your current notebook before you execute anything else in it? That should unload all the definitions. $\endgroup$ – Shredderroy Jun 28 '18 at 7:42
  • $\begingroup$ @Shredderroy That works. Thanks! $\endgroup$ – cord Jun 28 '18 at 7:47
  • $\begingroup$ Have a look to this question, you can also set a context "unique to this Notebook" $\endgroup$ – rhermans Jun 28 '18 at 7:49
  • $\begingroup$ @rhermans Thanks for the second link. Changing the global policy for CellContext to "Notebook" does exactly what I was looking for. $\endgroup$ – cord Jun 28 '18 at 7:56

Set the option value for CellContext to Notebook:

SetOptions[EvaluationNotebook[], CellContext -> Notebook]

Use $FrontEndSession (respectively, $FrontEnd) in place of EvaluationNotebook[] for the option setting to apply to all the notebooks in the current session (respectively, to all notebooks globally).

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  • $\begingroup$ This works, but changing the default global policy for CellContext was more convenient for me. Link for future reference $\endgroup$ – cord Jun 28 '18 at 8:00

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