base.py 文件源码

def settimeout(self, howlong):
        if howlong is None or howlong == _GLOBAL_DEFAULT_TIMEOUT:
            self.setblocking(True)
            return
        try:
            f = howlong.__float__
        except AttributeError:
            raise TypeError('a float is required')
        howlong = f()
        if howlong < 0.0:
            raise ValueError('Timeout value out of range')
        if howlong == 0.0:
            self.act_non_blocking = True
            self._timeout = 0.0
        else:
            self.act_non_blocking = False
            self._timeout = howlong