kivy on_touch_up() fires more than one time?

Question

I wonder, is there a way in kivy, where the method on_touch_up() fires continuously, when true? The output would look like this:

from kivy.app import App
from kivy.uix.widget import Widget
from kivy.graphics import Color, Ellipse, Line


class MyPaintWidget(Widget):

    def on_touch_down(self, touch):
        with self.canvas:
            Color(1, 1, 0)
            touch.ud['line'] = Line(points=(touch.x, touch.y))
        print(touch.spos, "Down")

    def on_touch_move(self, touch):
        touch.ud['line'].points += [touch.x, touch.y]
        print(touch.spos,"Move")

    def on_touch_up(self, touch):
        print(touch.spos,"Up")
        ### 
        #while on_touch_up():
            #print(touch.spos,"Up")
        ###

class MyPaintApp(App):

    def build(self):
        return MyPaintWidget()


if __name__ == '__main__':
    MyPaintApp().run()

It prints:

((0.2175, 0.7716666666666667), 'Down')
((0.2175, 0.7716666666666667), 'Move')
((0.2175, 0.685), 'Move')
((0.2175, 0.5516666666666667), 'Move')
((0.2175, 0.4633333333333334), 'Move')
((0.2175, 0.44666666666666666), 'Move')
((0.2175, 0.44666666666666666), 'Up')
((0.2175, 0.43500000000000005), 'Down')
((0.23, 0.43500000000000005), 'Move')
((0.67, 0.5916666666666667), 'Up')

but I would like to have more "Up" in the output(like every 0.1s). I've tried while with time.sleep() but the program crushes.

Answer 1

Simpler way to do it: add is_down property.

Example:

def on_touch_down(self, touch, pos):
    self.is_down = True
    <your code>
def on_touch_up(self, touch, pos):
    if self.is_down:
        self.is_down = False
        <your code>