如何在 Python 中與其他線程一起運行異步永遠線程？

Question

我正在嘗試與其他線程一起運行異步run_forever 。 但我只從永遠線程中獲得輸出，讓我認為第二個線程甚至沒有啟動。

代碼 - Classes.py：

import asyncio

class Class1:
    def __init__(self):
        self.loop = asyncio.get_event_loop()

    async def _funcClass1(self):
        while True:
            await asyncio.sleep(5)
            print('Hello async/threading world')

    def funcClass1(self):
        asyncio.ensure_future(self._funcClass1())
        self.loop.run_forever()

class Class2:
    def __init__(self):
        self.loop = asyncio.get_event_loop()
    
    async def _funcClass2(self, name):
        print(f'Hello {name}')
    
    def funcClass2(self):
        self.loop.run_until_complete(self._funcClass2())

代碼 - main.py：

from Classes import Class1, Class2
import threading
import asyncio

class1 = Class1()
class2 = Class2()

if __name__ == "__main__":
    t1 = threading.Thread(target=asyncio.run, args=(class1.funcClass1(), ))
    t2 = threading.Thread(target=class2.funcClass2, args=('john', ))

    t1.start()
    t2.start()

    t1.join()
    t2.join()

輸出：

Hello async/threading world
Hello async/threading world
Hello async/threading world
Hello async/threading world
Hello async/threading world
Hello async/threading world
Hello async/threading world
Hello async/threading world
Hello async/threading world

Answer 1

run_forever()將阻止下一行代碼。

在運行第二個線程后嘗試放置它

classes.py

import asyncio

class Class1:
    def __init__(self):
        self.loop = asyncio.get_event_loop()

    async def _funcClass1(self):
        while True:
            await asyncio.sleep(5)
            print('Hello async/threading world')

    def funcClass1(self):
        asyncio.ensure_future(self._funcClass1())

class Class2:
    def __init__(self):
        self.loop = asyncio.get_event_loop()
    
    async def _funcClass2(self, name):
        print(f'Hello {name}')
    
    def funcClass2(self):
        self.loop.run_until_complete(self._funcClass2())

main.py

from Classes import Class1, Class2
import threading
import asyncio

class1 = Class1()
class2 = Class2()

if __name__ == "__main__":
    t1 = threading.Thread(target=asyncio.run, args=(class1.funcClass1(), ))
    t2 = threading.Thread(target=class2.funcClass2, args=('john', ))

    t1.start()
    t2.start()

    class1.loop.run_forever()

    t1.join()
    t2.join()

Answer 2

在玩弄了@danangjoyoo 的答案之后。 我想出了這個（兩個函數都需要作為target=asyncio.run執行）：

classes.py ：

import asyncio

class Class1:
    def __init__(self):
        self.loop = asyncio.get_event_loop()

    async def _funcClass1(self):
        while True:
            await asyncio.sleep(5)
            print('Hello async/threading world')

    def funcClass1(self):
        asyncio.ensure_future(self._funcClass1())

class Class2:
    def __init__(self):
        self.loop = asyncio.get_event_loop()
    
    async def _funcClass2(self, name):
        print(f'Hello {name}')
    
    def funcClass2(self, name):
        asyncio.ensure_future(self._funcClass2(name))

main.py ：

from Classes import Class1, Class2
import threading
import asyncio

class1 = Class1()
class2 = Class2()

if __name__ == "__main__":
    t1 = threading.Thread(target=asyncio.run, args=(class1.funcClass1()))
    t2 = threading.Thread(target=asyncio.run, args=(class2.funcClass2('john')))

    class1.loop.run_forever()
    class2.loop.run_until_complete()

    t1.start()
    t2.start()

    t1.join()
    t2.join()