If \var{onerror} is provided, it must be a callable that accepts
three parameters: \var{function}, \var{path}, and \var{excinfo}.
The first parameter, \var{function}, is the function which raised
- the exception; it will be \function{os.remove()} or
+ the exception; it will be \function{os.listdir()}, \function{os.remove()} or
\function{os.rmdir()}. The second parameter, \var{path}, will be
the path name passed to \var{function}. The third parameter,
\var{excinfo}, will be the exception information return by