Simple spinner for long proccess

spinner.py

import time
from multiprocessing import Process, Value

class spinner():
    def __init__(self, desc="", animation="|/-\\", end="✔", sleep=0.05):
        self.text = desc
        self.end = end
        self.animation = animation
        self.sleep = sleep
        self.idx = 0
        self.p = Process(target=self._thread_func)
        self.running = Value('i', True)

    def __enter__(self):
        self.p.start()

    def _thread_func(self):
        while self.running.value:
            print('\r' + self.text + self.animation[self.idx], end='', flush=True)
            self.idx = (self.idx + 1) % len(self.animation)
            time.sleep(self.sleep)

    def __exit__(self, arg2, arg3, arg4):
        self.running.value = False
        self.p.join()
        print('\r' + self.text + self.end)

with spinner(desc='Loading model '):
    time.sleep(3)