pyflakes: pyflakes (passive checker of Python programs) pyflakes: pyflakes: Pyflakes is a program to analyze Python programs and detect various pyflakes: errors. It works by parsing the source file, not importing it, so it pyflakes: is safe to use on modules with side effects. It's also much faster pyflakes: passive checker of Python programs. pyflakes: pyflakes: pyflakes: pyflakes: pyflakes: