def run_test_line_plus():
    ' Tests the   line_plus   method of the Line class. '
    m1t.run_test_line_plus()
    line1 = Line(Point(500, 20), Point(100, 8))
    line2 = Line(Point(100, 13), Point(400, 8))
    line3 = line1.line_plus(line2)
    print(line3)
    print('The above should print:  Line[(600, 33), (500, 16)]')
Tests the   line_plus   method of the Line class.
def run_test_line_plus():
    '  '
    m1t.run_test_line_plus()
    line1 = Line(Point(500, 20), Point(100, 8))
    line2 = Line(Point(100, 13), Point(400, 8))
    line3 = line1.line_plus(line2)
    print(line3)
    print('The above should print:  Line[(600, 33), (500, 16)]')