I used to be able to successfully obtain data using the following code, but now the data cannot be displayed
The hardware I am using is Canable.
Additional context
OS and version:Windows10/Ubuntu 24.04
Python version:Python3.10/Python3.12
python-can version:4.2.0/4.4.2
python-can interface/s (if applicable):slcan
Traceback and logs
The environment that was once able to run successfully：
```python
cantools==39.3.0
mqtt==0.0.1
paho-mqtt==1.6.1
pyserial==3.5
python-can==4.2.0
```
this is my code example,It was once able to run successfully.
```python
# This is a sample Python script.
import asyncio
import time
from typing import List
import can
from can.notifier import MessageRecipient
# import cantools
import serial.tools.list_ports
# import paho.mqtt.client as mqtt
# import json
# client = mqtt.Client()
# db = cantools.database.load_file('.\wuling.dbc')
def on_connect(client, userdata, flags, rc):
print(f"Connected with result code {rc}")
async def main() -> None:
port = None
ports_list = list(serial.tools.list_ports.comports())
if len(ports_list) <= 0:
print("无串口设备,即将退出...")
time.sleep(2)
exit(0)
else:
print("可用的串口设备如下：")
for comport in ports_list:
print(comport.name + "，描述：" + str(comport.description) + "，设备ID：" + str(comport.vid) + ":" + str(
comport.pid))
for comport in ports_list:
if comport.pid == 4478 and comport.vid == 5840:
print("选择第一个CAN设备：" + comport.name + " " + str(comport.description))
port = comport
break
if port is None:
print("未发现CAN设备,即将退出...")
time.sleep(2)
exit(0)
# client.on_connect = on_connect
# client.username_pw_set(username="user", password="user")
# client.connect("127.0.0.1", 1883, 60)
"""The main function that runs in the loop."""
with can.interface.Bus(bustype='slcan', channel=str(port.name), bitrate=500000, ) as bus:
reader = can.AsyncBufferedReader()
listeners: List[MessageRecipient] = [
reader,
]
loop = asyncio.get_running_loop()
notifier = can.Notifier(bus, listeners, loop=loop)
while True:
msg = await reader.get_message()
try:
print(msg)
except Exception as ex:
print(ex)
pass
pass
if __name__ == "__main__":
asyncio.run(main())
```
Describe the bug
I used to be able to successfully obtain data using the following code, but now the data cannot be displayed The hardware I am using is Canable.
Additional context
OS and version:Windows10/Ubuntu 24.04 Python version:Python3.10/Python3.12 python-can version:4.2.0/4.4.2 python-can interface/s (if applicable):slcan
Traceback and logs
The environment that was once able to run successfully： ```python cantools==39.3.0 mqtt==0.0.1 paho-mqtt==1.6.1 pyserial==3.5 python-can==4.2.0 ``` this is my code example,It was once able to run successfully. ```python # This is a sample Python script. import asyncio import time from typing import List import can from can.notifier import MessageRecipient # import cantools import serial.tools.list_ports # import paho.mqtt.client as mqtt # import json # client = mqtt.Client() # db = cantools.database.load_file('.\wuling.dbc') def on_connect(client, userdata, flags, rc): print(f"Connected with result code {rc}") async def main() -> None: port = None ports_list = list(serial.tools.list_ports.comports()) if len(ports_list) <= 0: print("无串口设备,即将退出...") time.sleep(2) exit(0) else: print("可用的串口设备如下：") for comport in ports_list: print(comport.name + "，描述：" + str(comport.description) + "，设备ID：" + str(comport.vid) + ":" + str( comport.pid)) for comport in ports_list: if comport.pid == 4478 and comport.vid == 5840: print("选择第一个CAN设备：" + comport.name + " " + str(comport.description)) port = comport break if port is None: print("未发现CAN设备,即将退出...") time.sleep(2) exit(0) # client.on_connect = on_connect # client.username_pw_set(username="user", password="user") # client.connect("127.0.0.1", 1883, 60) """The main function that runs in the loop.""" with can.interface.Bus(bustype='slcan', channel=str(port.name), bitrate=500000, ) as bus: reader = can.AsyncBufferedReader() listeners: List[MessageRecipient] = [ reader, ] loop = asyncio.get_running_loop() notifier = can.Notifier(bus, listeners, loop=loop) while True: msg = await reader.get_message() try: print(msg) except Exception as ex: print(ex) pass pass if __name__ == "__main__": asyncio.run(main()) ```