(self, parameter='t')
return [t, -5, 5]
The plot interval for the default geometric plot of line. Gives
        values that will produce a line that is +/- 5 units long (where a
        unit is the distance between the two points that define the line).

        Parameters
        ==========

        parameter : str, optional
            Default value is 't'.

        Returns
        =======

        plot_interval : list (plot interval)
            [parameter, lower_bound, upper_bound]

        Examples
        ========

        >>> from sympy import Point, Line
        >>> p1, p2 = Point(0, 0), Point(5, 3)
        >>> l1 = Line(p1, p2)
        >>> l1.plot_interval()
        [t, -5, 5]
The plot interval for the default geometric plot of line. Gives
        values that will produce a line that is +/- 5 units long (where a
        unit is the distance between the two points that define the line).
The plot interval for the default geometric plot of line . Gives values that will produce a line that is + / - 5 units long ( where a unit is the distance between the two points that define the line ) .
def plot_interval(self, parameter='t'):
        """The plot interval for the default geometric plot of line. Gives
        values that will produce a line that is +/- 5 units long (where a
        unit is the distance between the two points that define the line).

        Parameters
        ==========

        parameter : str, optional
            Default value is 't'.

        Returns
        =======

        plot_interval : list (plot interval)
            [parameter, lower_bound, upper_bound]

        Examples
        ========

        >>> from sympy import Point, Line
        >>> p1, p2 = Point(0, 0), Point(5, 3)
        >>> l1 = Line(p1, p2)
        >>> l1.plot_interval()
        [t, -5, 5]

        """
        t = _symbol(parameter)
        return [t, -5, 5]
def plot_interval ( self , parameter = 't' ) : t = _symbol ( parameter ) return [ t , - 5 , 5 ]