As reported by the Debian packaging ``` /usr/lib/python3/dist-packages/catfish/CatfishSearchEngine.py:273: SyntaxWarning: "is" with a literal. Did you mean "=="? if method.method_name is 'walk': /usr/lib/python3/dist-packages/catfish/CatfishSearchEngine.py:277: SyntaxWarning: "is" with a literal. Did you mean "=="? if method.method_name is 'fulltext': ```