there is a subtle bug in
https://github.com/nutonomy/nuscenes-devkit/blame/master/python-sdk/nuscenes/eval/detection/data_classes.py:39
self.class_names = self.class_range.keys()
when this line is pickled for pytorch distributed training , it will cause TypeError: cannot pickle 'dict_keys' object.
so it is necessary to change it to self.class_names = list(self.class_range.keys()) .
there is a subtle bug in
https://github.com/nutonomy/nuscenes-devkit/blame/master/python-sdk/nuscenes/eval/detection/data_classes.py:39
self.class_names = self.class_range.keys()
when this line is pickled for pytorch distributed training , it will cause
TypeError: cannot pickle 'dict_keys' object.so it is necessary to change it to
self.class_names = list(self.class_range.keys()).