(self, val)
return '{}'.format(self.values[int(val)])
Return a textual representation of the value (`self.values[int(val)]`)
        or "?" if the value is unknown.

        :param val: value
        :type val: float (should be whole number)
        :rtype: str
Return a textual representation of the value (`self.values[int(val)]`)
        or "?" if the value is unknown.
Return a textual representation of the value ( self . values [ int ( val ) ] ) or ? if the value is unknown .
def repr_val(self, val):
        """
        Return a textual representation of the value (`self.values[int(val)]`)
        or "?" if the value is unknown.

        :param val: value
        :type val: float (should be whole number)
        :rtype: str
        """
        if isnan(val):
            return "?"
        return '{}'.format(self.values[int(val)])
def repr_val ( self , val ) : if isnan ( val ) : return "?" return '{}' . format ( self . values [ int ( val ) ] )