(self, name, func)
Add a filter. The provided function is called with the configuration
        string as parameter and must return a (regexp, to_python, to_url) tuple.
        The first element is a string, the last two are callables or None.
Add a filter. The provided function is called with the configuration
        string as parameter and must return a (regexp, to_python, to_url) tuple.
        The first element is a string, the last two are callables or None.
Add a filter . The provided function is called with the configuration string as parameter and must return a ( regexp to_python to_url ) tuple . The first element is a string the last two are callables or None .
def add_filter(self, name, func):
        ''' Add a filter. The provided function is called with the configuration
        string as parameter and must return a (regexp, to_python, to_url) tuple.
        The first element is a string, the last two are callables or None. '''
        self.filters[name] = func
def add_filter ( self , name , func ) : self . filters [ name ] = func