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cart's Issues

ValueError: max() arg is an empty sequence

Hi there,

I am a Business student in university and have a module that requires us to search for from scratch algorithms online that can work with our business problem. I found this CART code and tried to apply it to my dataset for telecom churn. I have converted the categorical variables to numerical (int/float) but the code won't run. It gives ValueError: max() arg is an empty sequence and I am unsure how to solve it since I am not a CompSci student. Is anyone able to help me?

Screenshot 2022-02-05 163629
Screenshot 2022-02-05 163611
Screenshot 2022-02-05 163558
Screenshot 2022-02-05 163529
Screenshot 2022-02-05 163508

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