cli-logger 1.0

A module to pretty-print outputs for command-line programs.

cli_logger

Easy logger for python command line programs using click.

What it does

Use this script in your programs to get pretty-printed messages printed to STDOUT. To see what it does, just execute the script in test_manuell (which does not contain a unit test, but a script to see what it does.

Here's a screenshot:

It comes with these features:

• Setting a severity level, to hide non-relevant / verbouse output.
• Printing text at level Debug, Information, Warning and Error.
• Retrieve a return code in case a warning (1) or an error (2) has been raised.
• Configurable progress bar.

How to use

Program initialisation

At program initialisation, use set_minimum_severity_level to decide from which level and above messages should be printed.

Level	Rank	MessageClass=	Description
1	Lowest	DEBUG	Information helping to understand the program flow or to search for errors. Of course, developers might use debuggers, but consider a productive use where debugging is not possible.
2		INFORMATION	Default level. Information to the user that does not require to intervent.
3		WARNING	Hint that something hasn't been as expected. Results might be erreneous.
4	Highest	ERROR	Something went wrong and it wasn't possible to resolve the situation.

Program execution

Print to the screeneee

Use debug('my message'), information('my message'), warning and error to create output. log, information, set_minimum_severity_level, error, debug, warning, returnCode,

Print a progress bar

printProgressBar

Program termination

Retrieve a return code returnCode() which indicates if a warning or error has been issued. For sure, a discussion could be opened wether this is a good method or wether exceptions would suit better.

Rules to create a return code (last verified rule wins):

Event	Return Code
Only messages of type DEBUG or INFORMATION have been issued.	0
At least one WARNING has been issued.	1
At least one ERROR has been issued.	2