ReadonlyConfigError: Cannot change read-only config container full_key: num_classes reference_type=Optional[Dict[Union[str, Enum], Any]] object_type=dict

[jakeum]

ReadonlyConfigError: Cannot change read-only config container full_key: num_classes reference_type=Optional[Dict[Union[str, Enum], Any]] object_type=dict

import effdet from effdet import get_efficientdet_config, EfficientDet, DetBenchTrain from effdet.efficientdet import HeadNet

weight_path = '/media/ssd1/jake/eff_weights/tf_efficientdet_d5-ef44aea8.pth'

def get_net(): config = get_efficientdet_config('tf_efficientdet_d5') net = EfficientDet(config, pretrained_backbone=False) checkpoint = torch.load(weight_path) #d3-d7 ('efficientdet_model' folder) net.load_state_dict(checkpoint) print(config) config.num_classes = 1 config.image_size = 512 net.class_net = HeadNet(config, num_outputs=config.num_classes, norm_kwargs=dict(eps=.001, momentum=.01)) return DetBenchTrain(net, config) net = get_net()

---------------------------------------------------------------------------
ReadonlyConfigError                       Traceback (most recent call last)
<ipython-input-67-efc87f4a5fe3> in <module>
     15     net.class_net = HeadNet(config, num_outputs=config.num_classes, norm_kwargs=dict(eps=.001, momentum=.01))
     16     return DetBenchTrain(net, config)
---> 17 net = get_net()

<ipython-input-67-efc87f4a5fe3> in get_net()
     11     net.load_state_dict(checkpoint)
     12     print(config)
---> 13     config.num_classes = 1
     14     config.image_size = 512
     15     net.class_net = HeadNet(config, num_outputs=config.num_classes, norm_kwargs=dict(eps=.001, momentum=.01))

~/venv_11.1/lib/python3.6/site-packages/omegaconf/dictconfig.py in __setattr__(self, key, value)
    276             if isinstance(e, OmegaConfBaseException) and e._initialized:
    277                 raise e
--> 278             self._format_and_raise(key=key, value=value, cause=e)
    279             assert False
    280 

~/venv_11.1/lib/python3.6/site-packages/omegaconf/base.py in _format_and_raise(self, key, value, cause, type_override)
     99             msg=str(cause),
    100             cause=cause,
--> 101             type_override=type_override,
    102         )
    103         assert False

~/venv_11.1/lib/python3.6/site-packages/omegaconf/_utils.py in format_and_raise(node, key, value, msg, cause, type_override)
    692         ex.ref_type_str = ref_type_str
    693 
--> 694     _raise(ex, cause)
    695 
    696 

~/venv_11.1/lib/python3.6/site-packages/omegaconf/_utils.py in _raise(ex, cause)
    608     else:
    609         ex.__cause__ = None
--> 610     raise ex  # set end OC_CAUSE=1 for full backtrace
    611 
    612 

ReadonlyConfigError: Cannot change read-only config container
    full_key: num_classes
    reference_type=Optional[Dict[Union[str, Enum], Any]]
    object_type=dict

[rwightman]

By design, use the functionally provided so config is changed properly

[j-sieger]

Facing the same issue again. Not able to update the num_classes in config. Throwing same exception as above