Python3从self.connect（（'badhost'，6667））捕获错误）

问题描述

看起来asyncio是要使用的模块。我会离开这个问题，因为它看起来不像有一个方法来捕捉具体的错误与asynchat。

Looks like asyncio is the module to use. I'll leave this question up anyway, because it doesn't look like there is a way to catch specific errors with asynchat.

class mysocket(asynchat.async_chat):
    terminator = b'\n'
    def __init__(self,sock=None):
        asynchat.async_chat.__init__(self,sock)
        self.create_socket()
        # Try always succeeds with self.connect
        try:
            self.connect(('badhost',6667))
            print('command always successful')
        except:
            print('This never gets printed')

如何从引发未捕获异常的self.connect（）方法中捕获错误。

How do I catch errors from the self.connect() method that causes an uncaught exception.

错误：uncaptured python exception，closing channel< main .mysocket badhost：6667 at 0x7f0a03e66a58>（：[Errno 111] Connection refused [/usr/lib/python3.4/asyncore.py|read|83] [/usr/lib/python3.4/asyncore。 py | handle_read_event | 439] [/ usr / l ib / python3.4 / asyncore.py | handle_connect_event | 447]）

error: uncaptured python exception, closing channel <main.mysocket badhost:6667 at 0x7f0a03e66a58> (:[Errno 111] Connection refused [/usr/lib/python3.4/asyncore.py|read|83] [/usr/lib/python3.4/asyncore.py|handle_read_event|439] [/usr/lib/python3.4/asyncore.py|handle_connect_event|447])

所有要尝试的都是覆盖handle_connect_event（）方法，并将asyncore.handle_connect_event（self ）。

All that is left to try is overwrite the handle_connect_event() method and put asyncore.handle_connect_event(self). I would like to get a professional answer to this dilemma.

推荐答案

尝试覆盖默认的handle_error方法：

Try to override default handle_error method:

def handle_error(self):
    t, v, tb = sys.exc_info()
    if t == socket.error:
        # do smth with it
        print("Connect error")

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