a.py

class Connect(object):
    def describe(self):
        return some_code2(self)

    def check(self):
        r = self.describe()
        return some_code3(self, r)

    def find(self):
        r = some_code1(self)
        r = self.check(r)
        r = some_code4(self, r)
        return some_code5(r)


class AsyncConnect(object):
    async def describe(self):
        return await some_async_code2(self)

    async def check(self):
        r = await self.describe()
        return some_code3(self, r)

    async def find(self):
        r = some_code1(self)
        r = await self.check(r)
        r = some_code4(self, r)
        return await some_async_code5(r)