It worked!!
I could stop Action.repeat().
Thank you so much!!

I'm making a sound pitch study app.

To repeat the program I used 'while and break' statement at first, but it didn't work in the 'scene'.
So I'm trying to use 'Action.repeat()' to repeat program. It works very fine.
And now I want to stop (cancel) the repeat and go back to 'setup(self)' or 'new_play(self)' screen when I touch 'stop_icon' SpriteNode automatically in the middle of the repeat program (when I don't want to repeat them10times (in my program below)).

Please help me achieve it.

from scene import *
import sound
from random import randint
#A = Action

class MyScene (Scene):
	def setup(self):
		self.background_color='#0000ff'
		ground=Node(parent=self)
				
		icons=['iob:ios7_play_32','iob:ios7_pause_32']
		
		self.start_icon=SpriteNode(icons[0],position=(self.size.w/2,150))
		self.start_icon.size*=3		

		self.stop_icon=SpriteNode(icons[1],position=(self.size.w/2,150))
		self.stop_icon.size*=3
		
		self.pmi=self.start_icon
		self.add_child(self.pmi)
		self.play_mode=False
	
	def did_change_size(self):
		pass	

		
	def sound_list(self):
		num=randint(0,12)
						
		sl=['piano:C4','piano:C#4','piano:D4','piano:D#4','piano:E4','piano:F4','piano:F#4','piano:G4','piano:G#4','piano:A4,'piano:A#4','piano:B4','piano:C5']
	
		self.player=sound.Player(sl[num])
		self.player.play()
		
	def new_play(self):
		self.pmi.remove_from_parent()
		self.pmi=self.start_icon
		self.add_child(self.pmi)
		self.play_mode=False
		
	def update(self):	# I don't want to use this update() function.
		pass
				
	def touch_began(self, touch):
		if self.play_mode==False:
			if touch.location in self.pmi.frame:
				self.pmi.remove_from_parent()
				self.pmi=self.stop_icon
				self.add_child(self.pmi)
				self.play_mode=True
				sq_1=Action.sequence(Action.call(self.sound_list),Action.wait(2.0))	# And more actions continue actually.
				
				rp_num=10	# I want to stop Action.repeat(sounds) when I touch 'stop_icon', when I don't want to repeat 10times in this case.
				rp=Action.repeat(sq_1,rp_num)
				
				sq_2=Action.sequence(rp,Action.call(self.new_play))
				
				self.run_action(sq_2)

	
		elif self.play_mode==True:	# I want to stop Action.repeat(sounds) when I touch 'stop_icon'(self.pmi), when I don't want to repeat 10times in this case.
			if touch.location in self.pmi.frame:
				self.pmi.remove_from_parent()
				self.pmi=self.start_icon
				self.add_child(self.pmi)
				self.play_mode=False
				
	def touch_moved(self, touch):
		pass
	
	def touch_ended(self, touch):
		pass
		
if __name__ == '__main__':
	run(MyScene(), show_fps=False)