La commande d'evenement recursif n'utilise pas la bonne methode de print

La commande est trop verbeuse, ça pollue les logs de CI.

Cf https://docs.djangoproject.com/en/2.2/howto/custom-management-commands

When you are using management commands and wish to provide console output, you should write to self.stdout and self.stderr, instead of printing to stdout and stderr directly. By using these proxies, it becomes much easier to test your custom command.