socket.py 文件源码

def __init__(self, sock, mode='rb', bufsize=-1, close=False):
        self._sock = sock
        self.mode = mode # Not actually used in this version
        if bufsize < 0:
            bufsize = self.default_bufsize
        self.bufsize = bufsize
        self.softspace = False
        # _rbufsize is the suggested recv buffer size.  It is *strictly*
        # obeyed within readline() for recv calls.  If it is larger than
        # default_bufsize it will be used for recv calls within read().
        if bufsize == 0:
            self._rbufsize = 1
        elif bufsize == 1:
            self._rbufsize = self.default_bufsize
        else:
            self._rbufsize = bufsize
        self._wbufsize = bufsize
        # We use StringIO for the read buffer to avoid holding a list
        # of variously sized string objects which have been known to
        # fragment the heap due to how they are malloc()ed and often
        # realloc()ed down much smaller than their original allocation.
        self._rbuf = StringIO()
        self._wbuf = [] # A list of strings
        self._wbuf_len = 0
        self._close = close