Im trying to make a Pyqt5 app with aiohttp request, and asyncio tasks. Im using quamash package too and it requires Python 3.7 so i installed this version.(it didn't work on Python 3.10) The main reason i use asyncio and quamash is because i want to do requests and without freezing the GUI of the app.
I get this error when i click the Start button and close the app:
Task exception was never retrieved
future: <Task finished coro=<App.rotator() done, defined at C:\Users\Zsolt\Documents\python-example\stack_exmaple.py:37> exception=RuntimeError('no running event loop')>
Traceback (most recent call last):
File "C:\Users\Zsolt\Documents\python-example\stack_exmaple.py", line 41, in rotator
response = await get()
File "C:\Users\Zsolt\Documents\python-example\stack_exmaple.py", line 51, in get
async with session.get(pokemon_url) as resp:
File "C:\Users\Zsolt\AppData\Local\Programs\Python\Python37\lib\site-packages\aiohttp\client.py", line 1138, in __aenter__
self._resp = await self._coro
File "C:\Users\Zsolt\AppData\Local\Programs\Python\Python37\lib\site-packages\aiohttp\client.py", line 533, in _request
async with ceil_timeout(real_timeout.connect):
File "C:\Users\Zsolt\AppData\Local\Programs\Python\Python37\lib\site-packages\aiohttp\helpers.py", line 734, in ceil_timeout
return async_timeout.timeout(None)
File "C:\Users\Zsolt\AppData\Local\Programs\Python\Python37\lib\site-packages\async_timeout\__init__.py", line 30, in timeout
loop = _get_running_loop()
File "C:\Users\Zsolt\AppData\Local\Programs\Python\Python37\lib\site-packages\async_timeout\__init__.py", line 236, in _get_running_loop
return asyncio.get_running_loop()
RuntimeError: no running event loop
Here is the full code:
from PyQt5.QtWidgets import *
from PyQt5.QtGui import QKeySequence, QPalette, QColor
from PyQt5.QtCore import Qt
from PyQt5 import QtGui, QtCore
import asyncio
import aiohttp
import quamash
import os.path
import json
import sys
class App(QWidget):
run = 0
response = ''
def __init__(self, loop):
super().__init__()
btn = QPushButton('Start', self)
btn.resize(btn.sizeHint())
btn.clicked.connect(self.start)
self.setGeometry(200, 200, 700, 400)
self.display = QLabel(self)
self.display.resize(200, 500)
self.display.move(1, 50)
self.count = 0
self.show()
self.loop = loop
self.tasks = []
self.tasks.append(loop.create_task(self.rotator()))
async def rotator(self):
while await asyncio.sleep(0, True):
if (self.run == 1):
self.count += 1
response = await get()
self.display.setText(str(response))
def start (self):
self.run = 1
async def get():
async with aiohttp.ClientSession() as session:
pokemon_url = 'https://pokeapi.co/api/v2/pokemon/151'
async with session.get(pokemon_url) as resp:
pokemon = await resp.json()
print(pokemon)
return pokemon
app = QApplication(sys.argv)
app.setApplicationName("Sample ;)")
loop = quamash.QEventLoop(app)
asyncio.set_event_loop(loop)
with loop:
window = App(loop)
window.show()
loop.run_forever()
If i comment out the response = await get() it works, it counts the self.count += 1 and it shows the variable on self.display.setText(str(self.count)) . But i need to get it to work with the aiohttp request so it should print out the response from the request.
aiohttpprevius release.pip install aiohttp==3.7.4