[英]How to properly handle this error while using multi thread
我正在使用凝固汽油彈庫通過 GNS3 連接到 Arista vEOS。 我故意放錯了 IP 只是為了看看我的代碼是如何處理錯誤的。 但是 try and except 沒有按預期工作。
import napalm
import concurrent.futures
def napalm_library(ip):
driver = napalm.get_network_driver(ip[3])
optional = {"transport": "telnet"}
with driver(hostname=ip[0], username=ip[1], password=ip[2], optional_args=optional) as device:
device.load_merge_candidate("test.txt")
device.commit_config()
with concurrent.futures.ThreadPoolExecutor() as executor:
t = executor.submit(napalm_library, ['1.1.1.1','username','pass','ios'])
try:
t.result()
except TimeoutError as err1:
print(err1)
相反,它給了我這個 TimeoutError 事件,我已經嘗試捕獲 TimeoutError。
[WinError 10060] A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond
Traceback (most recent call last):
File "C:\Python38-32\lib\site-packages\pyeapi\eapilib.py", line 436, in send
self.transport.endheaders(message_body=data)
File "C:\Python38-32\lib\http\client.py", line 1225, in endheaders
self._send_output(message_body, encode_chunked=encode_chunked)
File "C:\Python38-32\lib\http\client.py", line 1004, in _send_output
self.send(msg)
File "C:\Python38-32\lib\http\client.py", line 944, in send
self.connect()
File "C:\Python38-32\lib\http\client.py", line 1392, in connect
super().connect()
File "C:\Python38-32\lib\http\client.py", line 915, in connect
self.sock = self._create_connection(
File "C:\Python38-32\lib\socket.py", line 808, in create_connection
raise err
File "C:\Python38-32\lib\socket.py", line 796, in create_connection
sock.connect(sa)
TimeoutError: [WinError 10060] A connection attempt failed because the connected party did not properly r
啟發我,因為我應該如何處理錯誤。
當您像這樣檢索線程結果時,您應該捕獲錯誤:
from concurrent.futures import ThreadPoolExecutor
with ThreadPoolExecutor() as executor:
t = executor.submit(napalm_library, ip_addresses)
try:
t.result()
except TimeoutError as err:
print(err)
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