The following code produces an AttributeError at kmeans.fit(x): (AttributeError: 'NoneType' object has no attribute 'split'). The same error also appears with the jupyter notebook solution downloaded from the resources. How do I solve this error? wcss = [] for i in range(1,7): kmeans = KMeans(i) kmeans.fit(x) wcss_iter = kmeans.inertia_ wcss.append(wcss_iter)

Seems the issue is with conda using an outdated version of threadpoolctl. Solve this by running pip install --upgrade threadpoolctl, then restarting your notebook kernel and run everything again. I'm surprised Python has so many dependency errors, I thought these kind of errors were usually JS and npm territory ^^

I have the same error, you can fix it by changing the range to (2,7). Maybe there was a change in the library, and KMeans (1) isn't working any more, as does not make a lot of sense.