fix ci

Author: zhiqiu

python/paddle/fluid/layers/io.py

@@ -32,7 +32,7 @@
 import logging
 from ..data_feeder import check_dtype, check_type
 from paddle.fluid.framework import static_only
-from ..framework import _get_paddle_place
+from ..framework import _get_paddle_place, _current_expected_place, _set_expected_place
 
 __all__ = [
     'data', 'read_file', 'double_buffer', 'py_reader',