snippy | A fairly full featured Pastie clone on Rails | Collaboration library

I have just started learning linux CLI. I am using snippy tool for comparing multiple files that require a .tab format file. This tab formatted file should be consisting of the paths and filenames separated by tab (\t).

I have run this two commands separately to generate a list of filenames and paths.

I'm attempting to resolved an issue with a left over square after my snipping program is done snipping. I would like to delete any instance of the square drawing after the initial snip

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Steps to replicate:

Select "mode" > select "snip" > drag rectangle and take a screen snip

Select "mode" > select "snip" > now observe the previous snip still has the rectangle on the screen (as shown in the picture)

My code:

I'm in the process of converting my successful screen snipping program from Tkinter to PYQT5. My question is how to create a fully transparent snipping area (a dynamically updating square region would be nice). The outside of the square will be semi-opaque. I've looked all over stack overflow and the internet and could not find an example of this (others are not a fully transparent drawing window). I've attached my code and a picture example of what I am looking for. The "SnippingWidget" is the class that does the snipping logic.

the image shows the test dataset I am using to verify if the right averages are being calculated.

I want to be able to get the average of the corresponding values in the 'G' column based on the filtered values in the 'T' column.

So I set the values for the 'T' coloumn based on which I want to sum the values in the 'G' column and then divide the total by the count to get an average, which is appended to a variable. however the average is not correctly calculated. see below screenshot