This post is inspired on an issue I once found, while I was using a well-known library in Python for parsing YAML files. The problem was that when it was loading the content of the file, the result was not coherent, because sometimes it returned the content as a python dict, but if the file was empty, the return value was None.

Do you notice something odd here?

What if I want to use the result? I cannot do it safely, for example: