Each line of pylint output can be broken into 4 parts. We can break them down with the following example:

simplecaesar.py:3:0: W0301: Unnecessary semicolon (unnecessary-semicolon)

The first part of the output will be the name of the file with a given mesasge, such as simplesaesar.py

This will be followed by the row and column, and then the id of the message, such as "W0301".

The message will be followed by the actual message itself, and then a symbolic name for the message, which in this example is "unnecessary-semicolon"