Logging validation errors

[tzachyrm]

[tzachyrm]

@Fischerfredl any chance to merge this? Thanks!

[Fischerfredl]

Hi @tzachyrm,

thank you for your pull request.

To incorporate logging, i would like to conform to standard logging practices.

See:

• https://docs.python.org/3/howto/logging.html
  • Specifically https://docs.python.org/3/howto/logging.html#advanced-logging-tutorial
  • and https://docs.python.org/3/howto/logging.html#configuring-logging-for-a-library
• https://docs.python.org/3/howto/logging.html#configuring-logging-for-a-library

I propose the following changes

• [ ] Leave the function interface as is
• [ ] create a logger based on __name__
• [ ] Use a fixed log level for logging
  • I'd consider failing validation and decoding as "events that occur during normal operation of a program" so info or debug would be more appropriate
• [ ] document logging in README.md
• [ ] Nice to have: tests

With those changes I wouldn't see a reason not to merge this.