random_gen.py

import asyncio
import random


class Genropy:

    _number = None

    @property
    def number(self):
      cls = self.__class__
      return cls._number

    @classmethod
    async def gen(cls):
      while True:
        if cls._number is None:
          cls._number = 0

        await asyncio.sleep(random.randint(0,5))

        yield cls._number

        cls._number += 1


service = Genropy()

async def main(id):
  async for number in service.gen():
    print(f"Main {id} - {number}")

loop = asyncio.get_event_loop()
loop.create_task(main(1))
loop.create_task(main(2))
try:
  loop.run_forever()
except KeyboardInterrupt:
  loop.close()

print(service.number)