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Could you post the top part of the script you ran? I bet you forgot to add a #! /usr/bin/python or similar to the top of your file.

Could you post the top part of the script you ran? I bet you forgot to add a #! /usr/bin/python or similar to the top of your file.

If you have an executable file asd.py like

import numpy
a = 1
...

and do an './asd.py', Ubuntu will assume a bash-script (as there is no shebang) Now the first command is 'import' which can be used to make partial screenshots: import (bash). This is also the reason why your mouse pointer changes. (just type 'import asd.png' and mark a region) This also explains the new files (it's just the images (most probably postscript files)).