There are two bugs in robot.utils.Importer. Neither of them affect usage with Robot, but can be encountered if the Importer is used programmatically:

1. Using it with relative Path objects fails with a TypeError. With strings paths must be absolute to reliably separate paths from modules and that cannot be changed. We could also explicitly reject relative Path objects, but because we know they are paths, we can as well accept them.

2. Using Importer without a logger failed with an AttributeError if a module was removed from sys.modules as part of the importing process.