Maskrcnn-benchmark: where did this sentence import _C 'from maskrcnn_benchmark import _C'?

[FanShuixing]

❓ Questions and Help

Hi.I have seen this line 'from maskrcnn_benchmark import _C' many times in maskrcnn_benchmark/layers.For example, in maskrcnn_benchmark/layers/roi_pool.py,there is also importing _C,and in Line18,output, argmax = _C.roi_pool_forward( input, roi, spatial_scale, output_size[0], output_size[1] ),I can't understand _C's usage.Could you help to tell me how to understand this usage?
Looking forward you reply.

[simaiden]

It's used to open the config files in .yaml format

[FanShuixing]

@simaiden Hi,Thanks for your attention. I have figured out this question after many days, and _C is not used to open the config files.The _C is from the file _C.cpython-36m-x86_64-linux-gnu.so in maskrcnn-benchmark which is produced by the lines "python setup.py build develop".