py2.py 文件源码

def __init__(self, f, mode='r', bufsize=-1):
        if not isinstance(f, six.string_types + (int, file)):
            raise TypeError('f(ile) should be int, str, unicode or file, not %r' % f)

        if isinstance(f, six.string_types):
            f = open(f, mode, 0)

        if isinstance(f, int):
            fileno = f
            self._name = "<fd:%d>" % fileno
        else:
            fileno = os.dup(f.fileno())
            self._name = f.name
            if f.mode != mode:
                raise ValueError('file.mode %r does not match mode parameter %r' % (f.mode, mode))
            self._name = f.name
            f.close()

        super(GreenPipe, self).__init__(_SocketDuckForFd(fileno), mode, bufsize)
        set_nonblocking(self)
        self.softspace = 0