Unable to import kaleido when running (price / price.iloc[0]).vbt.plot().show_svg() in example PortfolioOptimization.ipynb

[ljhust]

When I running a PortfolioOptimization.ipynb example in colab, there was an error that occurred like below:

ValueError:
Image export using the "kaleido" engine requires the kaleido package,
which can be installed using pip:
$ pip install -U kaleido

[polakowo]

@ljhust, you must install kaleido explicitly, it's not included in the distribution. Or, you can specify `engine="orca"', see https://plotly.com/python/static-image-export/.

[andreas-vester]

If you simply pip install kaleido it will install version 0.2.1.post1 (as of 2022-01-17). From personal experience, I can tell that the simple fact that the version contains post1 can lead to errors with respect to package management.

If you encounter any difficulties, try to use the previous version, i.e. pip install kaleido==0.2.1.

[anhoa-vu]

Try to use .show() instead of .show_svg()

[Hoernchen]

win64/py310/kaleido 0.2.1: broken, show_svg() hangs forever - see plotly/Kaleido#126
solution:
pip install --upgrade "kaleido==0.1.*"
pip install nbformat <- runtime complaint because the old kaleido needs this

[eromoe]

It is super slow to running with vbt.plot().show_svg() , try with Hoernchen method works fine now.