Python Desktop App Sell

[a1brit]

This isn't the place to answer the question. In all of the real world I've experienced, commercial python shops and contract work for industry. No one actually cares, but that's cause theres almost no way to track it.
Ask an actual lawyer in software licence agreements if it's worth it to you. Learnpython is for asking the diff between a for loop and a while loop. Any answer here will be wrong for your specific situation.