1.修改了创建连接数据库引擎时的方言类型 2.修改了爬取数据的逻辑以及相关的异常分析代码

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2023-12-22 d03320352e3b34f2601aa8af9fd800a27c1adada

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S)aëClose an async resource or async generator immediately, without
    blocking to do any graceful cleanup.
 
    :class:`~trio.abc.AsyncResource` objects guarantee that if their
    :meth:`~trio.abc.AsyncResource.aclose` method is cancelled, then they will
    still close the resource (albeit in a potentially ungraceful
    fashion). :func:`aclose_forcefully` is a convenience function that
    exploits this behavior to let you force a resource to be closed without
    blocking: it works by calling ``await resource.aclose()`` and then
    cancelling it immediately.
 
    Most users won't need this, but it may be useful on cleanup paths where
    you can't afford to block, or if you want to close a resource and don't
    care about handling it gracefully. For example, if
    :class:`~trio.SSLStream` encounters an error and cannot perform its
    own graceful close, then there's no point in waiting to gracefully shut
    down the underlying transport either, so it calls ``await
    aclose_forcefully(self.transport_stream)``.
 
    Note that this function is async, and that it acts as a checkpoint, but
    unlike most async functions it cannot block indefinitely (at least,
    assuming the underlying resource object is correctly implemented).
 
    N)ÚtrioZCancelScopeÚcancelÚaclose)ÚresourceÚcs©r
úNd:\z\workplace\vscode\pyvenv\venv\Lib\site-packages\trio/_highlevel_generic.pyÚaclose_forcefully    s


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Zdd„ZdS)Ú StapledStreama–This class `staples <https://en.wikipedia.org/wiki/Staple_(fastener)>`__
    together two unidirectional streams to make single bidirectional stream.
 
    Args:
      send_stream (~trio.abc.SendStream): The stream to use for sending.
      receive_stream (~trio.abc.ReceiveStream): The stream to use for
          receiving.
 
    Example:
 
       A silly way to make a stream that echoes back whatever you write to
       it::
 
          left, right = trio.testing.memory_stream_pair()
          echo_stream = StapledStream(SocketStream(left), SocketStream(right))
          await echo_stream.send_all(b"x")
          assert await echo_stream.receive_some() == b"x"
 
    :class:`StapledStream` objects implement the methods in the
    :class:`~trio.abc.HalfCloseableStream` interface. They also have two
    additional public attributes:
 
    .. attribute:: send_stream
 
       The underlying :class:`~trio.abc.SendStream`. :meth:`send_all` and
       :meth:`wait_send_all_might_not_block` are delegated to this object.
 
    .. attribute:: receive_stream
 
       The underlying :class:`~trio.abc.ReceiveStream`. :meth:`receive_some`
       is delegated to this object.
 
    cÃs|j 
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 ¡IdHSdS)zªShuts down the send side of the stream.
 
        If ``self.send_stream.send_eof`` exists, then calls it. Otherwise,
        calls ``self.send_stream.aclose()``.
 
        Úsend_eofN)Úhasattrrrrrr
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zStapledStream.send_eofNcÃs|j 
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HS)z+Calls ``self.receive_stream.receive_some``.N)Úreceive_streamÚreceive_some)rZ    max_bytesr
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rrbszStapledStream.receive_somec

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