Exercising What is problem here?

[Random13-sketch]

from time import sleep
class Workout:
def init(self, exercise,time):#time with seconds
self.exercise = exercise
self.time = time

def counting_time(self):#time with secons
	for i in range (self.time, 0, -1):
		sleep(1)
		print(i)
	sleep(1)
	print(f"{self.exercise} has been finished succesfully in {self.time} seconds")

workout1=Workout("Running", int(input("Enter the time that you want to exercise > ")))
workout1.counting_time(self.time)