SyntaxWarning: "is" with a literal
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':