def is_visible(self):
        """:return: is this connection is visible
        :rtype: bool

        A connection is visible if it is longer that 0."""
        if self._start.y + 1 < self._stop.y:
            return True
        return False
def is_visible(self):
        """:return: is this connection is visible
        :rtype: bool

        A connection is visible if it is longer that 0."""
        if self._start.y + 1 < self._stop.y:
            return True
        return False
def is_visible ( self ) : if self . _start . y + 1 < self . _stop . y : return True return False
:return: is this connection is visible
        :rtype: bool

        A connection is visible if it is longer that 0.
: return : is this connection is visible : rtype : bool