'NoneType' object is not subscriptable

import matplotlib
import matplotlib.pyplot as plt
import pandas as pd
import numpy as np

The above code will lead to a ‘NoneType’ object is not subscriptable, but same code can run perfectly in Jupyter. I wonder what was wrong. Perhaps I didn’t switch to scientific mode?

Hello @DongYunhao, does your notebook have access to workspace files? What responce does os.path.exists("/data/workspace_files/exp4/train.csv") produce?

It gives the same responce as the code above. In addition, print(data.head()) is available but data.head() is not.

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Sorry for the inconvenience and thank you for the report, it seems that there is a bug in the Reactive kernel, will fix it soon. You can switch to regular non-reactive kernel at the moment, it should work properly