You could use neologger that provides methods to remark logs, or you can set up a template and even apply styles like italic or bold.
This is a log with a label. Example with Label
This is a log with template. Example of Template
This is a log with custom styles Example of Custom font styles
For more details on how to implement it follow this link: NeoLogger
And the PiPy page here: enter link description here
Hope it helps.