frame_manager.py 文件源码

def waitFor(self, selectorOrFunctionOrTimeout: Union[str, int, float],
                options: dict = None, **kwargs: Any) -> Awaitable:
        """Wait until `selectorOrFunctionOrTimeout`."""
        if options is None:
            options = dict()
        options.update(kwargs)
        if isinstance(selectorOrFunctionOrTimeout, (int, float)):
            fut: Awaitable[None] = asyncio.ensure_future(
                asyncio.sleep(selectorOrFunctionOrTimeout))
            return fut
        if not isinstance(selectorOrFunctionOrTimeout, str):
            fut = asyncio.get_event_loop().create_future()
            fut.set_exception(TypeError(
                'Unsupported target type: ' +
                str(type(selectorOrFunctionOrTimeout))
            ))
            return fut
        if ('=>' in selectorOrFunctionOrTimeout or
                selectorOrFunctionOrTimeout.strip().startswith('function')):
            return self.waitForFunction(selectorOrFunctionOrTimeout, options)
        return self.waitForSelector(selectorOrFunctionOrTimeout, options)