How would I improve this simple python class and its docstring ?

Question

This is a simple filter that I have been using for a project reading data over a serial connection, and thought it would be good to use it as my first attempt to write docstrings. Does anyone have any suggestions? I have been reading PEP 257. As it is a class, should the keyword arguments come after the __init__ ?

If there is a better way to write any part of it (not only the docstrings), I would appreciate it if people could point me in the right direction.

class Filter(object) :
    """Return x if x is greater than min and less than max - else return None. 

    Keyword arguments:
    min -- the minimum (default 0)
    max -- the maximum (default 0)

    Notes:
    Accepts integers and integer strings
    """
    def __init__(self, min=0, max=0) :
        self.min = min
        self.max = max
    def __call__(self, input) :
        try :
            if int(input) <= self.max and int(input) >= self.min : 
                return int(input)
        except : pass

Answer 1

It's usually a good idea to use pylint and pep8 to check the code conventions and common typing mistakes.