System variables in Mantid script interperter become not set.

[Alex Buts]

script below

import os
print "file is: ", __file__
print "path is: ", os.path.dirname(os.path.realpath(__file__))

does not work if run from Mantid script interpreter complaining that file is an unknown variable.

It does run though if the script is loaded in the script interpreter and only the row

print "file is: ", __file__ 

or a selection or rows including the one above is executed.

[Martyn Gigg]

Keep special file variable when clearing Python locals...

in MantidPlot. Refs #10012

Changeset: eb4b296f8b9aef9388106591153b2b09c8d8bb72

[Martyn Gigg]

Branch: ​bugfix/10012_maintain_file_var_in_script_window

Tester: Start MantidPlot, open the Python script window and paste in the following code

x = 1
y = 2
print x
print y
print __file__

Execute the code and there should be an error that no __file__ variable is defined. Now save the script to a file somewhere and execute the script. It should now print the location of the file on the last line.

Now comment out the y = 2 line and execute the script, it should stop at the print y line as it should no longer know what y is.

[Alex Buts]

Merge remote-tracking branch 'origin/bugfix/10012_maintain_file_var_in_script_window'

Full changeset: ​c43cd8f24563c6196424e52283a93cca9790f3d8

[Martyn Gigg]

Cherry-pick fixes from bugfix/10012_maintain_file_var_in_script_window

into next

Changes:

Keep special file variable when clearing Python locals...

in MantidPlot. Refs #10012 (cherry picked from commit eb4b296f8b9aef9388106591153b2b09c8d8bb72)

Changeset: 0019275fb477a270009e08020fac08e4fdcb806b

[Stuart Campbell]

This ticket has been transferred to github issue ​10854