ImportError: No module named fb

1

Hi, when i run caffe2/quantization/server/utils.py, i get this error:

Traceback (most recent call last):
  File "caffe2/quantization/server/conv_dnnlowp_op_test.py", line 8, in <module>
    from caffe2.quantization.server import utils as dnnlowp_utils
  File "/home/ryankang/workspace/projects/pytorch/build/caffe2/quantization/server/utils.py", line 8, in <module>
    from caffe2.python.fb import hardcode_scale_zp
ImportError: No module named fb

How to deal it? thanks!