Pyntch is a Python source code analyzer. It can detect possible runtime errors before actually running a Python code. Pyntch examines a source code statically and infers all possible types of variables, class attributes, function signatures, and return values of each function or method. Then it detects possible errors caused by type mismatch or other exceptions raised from each function. Unlike other Python code checker (such as Pychecker or Pyflakes), Pyntch does not check the style issues. http://www.unixuser.org/~euske/python/pyntch/index.html