Provide Way to Wipe Saved Variables in Python Scripting Window

[Peter Parker]

Currently the functionality of the Python Scripting Window is such that each tab in the window remembers the values of variables that have been set, and also which modules have been imported.

There have been a few cases where this has lead users to mistakenly believe that the script contains something which it doesn't, so that when it is run on someone else's PC it reports an error.

In any case, it would be nice to see whether or not a script would run just after being loaded without having to save -> close -> reopen it.

Possible solutions:

• Have a button in one of the menus that users can click to clear the stored information.

• Since the current functionality was meant to facilitate "Execute Selection" and doesn't really apply to "Execute All", clear the stored information whenever the entire script is run.

[Peter Parker]

Triage note: I have left the milestone field blank.

[Martyn Gigg]

Clear python variables in script window when executing whole script

Refs #9270

Changeset: 6c861ad2cb6363b778cb716f5ad481f61be2a701

[Martyn Gigg]

Provide menu option to clear current script variables

Refs #9270

Changeset: 013ee3ecbe57d4b6dede0638b917fd927a478750

[Martyn Gigg]

Branch: feature/9270_clear_script_dict_exec_all

Tester: To test that the variables are cleared when "Execute all" is triggered, do the following:

• Open script window and type

  x = 1
  y = 2
  print x
  print y
  

• Run "Execute All" and the values of x and y should be printed to the output box.
• Comment out the y=2 line and then run "Execute All". There should now be an error that y has not been defined.

Now try a similar thing using the new option Execute->Clear Variables:

• in the script above put back in the line y=2 and execute all to redefine y
• click the "Execute->Clear Variables" menu option
• highlight just the single line print y and click "Execute->Execute Selection"
• there should be a similar error about y being undefined.

[Arturs Bekasovs]

The changes do what is described: saved info is cleared when running the whole script, not cleared if running only a part of it, and cleared when using the new menu option. I've tried it with both variables (as per testing description) and imports. Works OK with multiple scripts open - variables are cleared in the current tab only. The code is understandable and looks neat.

[Arturs Bekasovs]

Merge remote-tracking branch 'origin/feature/9270_clear_script_dict_exec_all'

Full changeset: ​c94ee7117d605b95e252de8c08d43980115ec64e

[Stuart Campbell]

This ticket has been transferred to github issue ​10113