Plotly not install errror, though installed

Hi All,

I have Plotly installed and I am getting an error from optuna that it isn’t. My version of plotly is 4.8.1. Is there a solution for this? If I should install an older version of plotly, which version should it be?

Thanks! Chris

---

ImportError Traceback (most recent call last) <ipython-input-308-04cb7fde5fca> in <module> ----> 1 optuna.visualization.plot_intermediate_values(study)

~\Anaconda3\lib\site-packages\optuna\visualization\intermediate_values.py in plot_intermediate_values(study) 68 “”" 69 —> 70 _check_plotly_availability() 71 return _get_intermediate_plot(study) 72

~\Anaconda3\lib\site-packages\optuna\visualization\utils.py in _check_plotly_availability() 38 "Plotly can be installed by executing $ pip install plotly. " 39 "For further information, please refer to the installation guide of plotly. " —> 40 "(The actual import error is as follows: " + str(plotly_imports._import_error) + “)” 41 ) 42

ImportError: Plotly is not available. Please install plotly to use this feature. Plotly can be installed by executing $ pip install plotly. For further information, please refer to the installation guide of plotly. (The actual import error is as follows: No module named ‘plotly’)

[Hurricane-k]

encounter the same issue in Ubuntu my OS is Ubuntu 20.04.3, python 3.8.10, plotly 5.3.1, optuna 2.9.1 when i am gonna use plot_optimization_history(study) ( i have installed plotly by pip install and i confirm two of these packages are at same location and i have imported plt before.

but it also reminded me that i need to install plotly to use this feature

i just dont know how to deal with it

here is my error report:

ModuleNotFoundError Traceback (most recent call last) /usr/local/lib/python3.8/dist-packages/optuna/visualization/_plotly_imports.py in <module> 6 with try_import() as _imports: # NOQA ----> 7 import plotly # NOQA 8 from plotly import version as plotly_version

ModuleNotFoundError: No module named ‘plotly’

The above exception was the direct cause of the following exception:

ImportError Traceback (most recent call last) <ipython-input-72-db7ed42732c3> in <module> ----> 1 plot_intermediate_values(study)

/usr/local/lib/python3.8/dist-packages/optuna/visualization/_intermediate_values.py in plot_intermediate_values(study) 64 “”" 65 —> 66 _imports.check() 67 return _get_intermediate_plot(study) 68

/usr/local/lib/python3.8/dist-packages/optuna/_imports.py in check(self) 84 if self._deferred is not None: 85 exc_value, message = self._deferred —> 86 raise ImportError(message) from exc_value 87 88

ImportError: Tried to import ‘plotly’ but failed. Please make sure that the package is installed correctly to use this feature. Actual error: No module named ‘plotly’.

[pallogu]

I had the same issue on MacOS. It resolved itself when I started a new notebook without matlotlib. I think there might be some conflict between those two libs.