Linux Python Script To Check RAM Usage for Multiple Instances of the Same Application or An Application Which Uses Multiple Processes

Mem Info is an interesting Python script that allows you to check the RAM usage of processes that are running on your computer. What's great about it is that you can see the memory used by all the instances of an application, together which can be very useful in certain situations, for example: the RAM memory used by all the tabs of Chromium browser, etc.