Premx

# Read user input
def readInt(prompt,errormessage):
	while True:
		tmp = input(prompt)
		if tmp.isdecimal():
			return int(tmp)
		else:
			print(errormessage)

#Get up- and downBorder

Premx

#Nur Tabs

from time import *
from _thread import start_new_thread

t1 = clock()
t2 = clock()

def	exact(precision):
	t1 = clock()