asynchat.py 文件源码

def __init__ (self, sock=None, map=None):
        # for string terminator matching
        self.ac_in_buffer = ''

        # we use a list here rather than cStringIO for a few reasons...
        # del lst[:] is faster than sio.truncate(0)
        # lst = [] is faster than sio.truncate(0)
        # cStringIO will be gaining unicode support in py3k, which
        # will negatively affect the performance of bytes compared to
        # a ''.join() equivalent
        self.incoming = []

        # we toss the use of the "simple producer" and replace it with
        # a pure deque, which the original fifo was a wrapping of
        self.producer_fifo = deque()
        asyncore.dispatcher.__init__ (self, sock, map)