It communicates my intent to the reviewer and future readers of the code that: 1) I mean to set the duration to 5 minutes, which is easier parsed by humans than 300 seconds. 2) I'm passing seconds into time.sleep, which makes any mistakes I make more obvious.

I'm not saying time.sleep can't be improved but my method makes it easier to find any mistakes I've made in the future.

As a demonstration, reading your code makes it more obvious that you've passed the wrong unit into time.sleep.