What do these marks indicate exactly on these tray icons when I run Python from a terminal?

I ran an Anaconda Python installation from iTerm using python -i myscript.py. It made a plot using Matplotlib. After I closed the plot, the two icons remain.

Each has a dot under it, and a little arrow on the bottom left corner.

• When I type exit() at the python prompt the Python icon disappears and the iTerm icon remains unchanged.

• When I close iTerm the dot disappears, but the arrow remains.

Exactly what do these indicate? What is it exactly that these dots and arrows are trying to tell me?

Solution 1:

The short arrow is indicating alias. Some like that are also there in my Applications folder for apps which are located in ~/Library folder.

So I can guess that when first photo's original process is done, alias is still active. This happens to me while using OpenCV. closewindow() is hard to perform. I have to force quit it every time(it kills jupyter server too), or reuse the window.