ResourceUseDisplay instance expected an int or a callable, not the str

[masip85]

Installing nbresuse with conda for jupyterlab 2.2.9, I get following error at cpu_limit or memlimit when I use like this:

docker run --name ${NAME}_cont \
	--cpus=$CONTAINER_CPU_PER --cpuset-cpus=$CONTAINER_CPU_ARRAY \
	--memory=${CONTAINER_MEM} \
	[...]
	$IMAGE_NAME start.sh jupyter lab \
	--NotebookApp.password=$(<../.hashedPass.pwd) \
    --NotebookApp.base_url="/" \
    --NotebookApp.ResourceUseDisplay.mem_limit=${CONTAINER_MEM}   \
    --NotebookApp.ResourceUseDisplay.track_cpu_percent=True \
    --NotebookApp.ResourceUseDisplay.cpu_limit=$CONTAINER_CPU_NUM \
    --NotebookApp.allow_origin='https://colab.research.google.com' \
    --NotebookApp.port_retries=0
    

W 23:51:55.317 LabApp] Error loading server extension nbresuse
Traceback (most recent call last):
File "/opt/conda/lib/python3.8/site-packages/notebook/notebookapp.py", line 1945, in init_server_extensions
func(self)
File "/opt/conda/lib/python3.8/site-packages/nbresuse/init.py", line 35, in load_jupyter_server_extension
resuseconfig = ResourceUseDisplay(parent=nbapp)
File "/opt/conda/lib/python3.8/site-packages/traitlets/config/configurable.py", line 104, in init
self.config = config
File "/opt/conda/lib/python3.8/site-packages/traitlets/traitlets.py", line 604, in set
self.set(obj, value)
File "/opt/conda/lib/python3.8/site-packages/traitlets/traitlets.py", line 593, in set
obj._notify_trait(self.name, old_value, new_value)
File "/opt/conda/lib/python3.8/site-packages/traitlets/traitlets.py", line 1217, in _notify_trait
self.notify_change(Bunch(
File "/opt/conda/lib/python3.8/site-packages/traitlets/traitlets.py", line 1227, in notify_change
return self._notify_observers(change)
File "/opt/conda/lib/python3.8/site-packages/traitlets/traitlets.py", line 1264, in _notify_observers
c(event)
File "/opt/conda/lib/python3.8/site-packages/traitlets/traitlets.py", line 888, in compatible_observer
return func(self, change)
File "/opt/conda/lib/python3.8/site-packages/traitlets/config/configurable.py", line 208, in _config_changed
self._load_config(change.new, traits=traits, section_names=section_names)
File "/opt/conda/lib/python3.8/site-packages/traitlets/config/configurable.py", line 175, in _load_config
setattr(self, name, deepcopy(config_value))
File "/opt/conda/lib/python3.8/site-packages/traitlets/traitlets.py", line 604, in set
self.set(obj, value)
File "/opt/conda/lib/python3.8/site-packages/traitlets/traitlets.py", line 578, in set
new_value = self._validate(obj, value)
File "/opt/conda/lib/python3.8/site-packages/traitlets/traitlets.py", line 610, in _validate
value = self.validate(obj, value)
File "/opt/conda/lib/python3.8/site-packages/traitlets/traitlets.py", line 1981, in validate
self.error(obj, value)
File "/opt/conda/lib/python3.8/site-packages/traitlets/traitlets.py", line 690, in error
raise TraitError(e)
traitlets.traitlets.TraitError: The 'mem_limit' trait of a ResourceUseDisplay instance expected an int or a callable, not the str '14427566899'.

It's always a str, it doesn't matter I use hardcoded number, | bc ,or expr.

[jtpio]

Thanks @masip85.

This looks like an issue with traitlets 5, and a change in the way command line parameters are parsed.

It will probably for now by downgrading to traitlets 4. Although this indicates a fix in jupyter-resource-usage might also be needed.

[masip85]

So requirements of jupyter-resource-usage must change? I mean,if I want to downgrade,major changes have to be applied:

UnsatisfiableError: The following specifications were found
to be incompatible with the existing python installation in your environment:

Specifications:

  - traitlets=4.2.1 -> python=3.6
  - traitlets=4.2.1 -> python[version='2.7.*|3.4.*|3.5.*']

Your python: python=3.8