I get "TypeError: 'module' object is not subscriptable" for cm module

[Sunprince22]

"3rd Chapter - Classification"

from matplotlib import cm
cm[1, 1] / (cm[1, 1] + (cm[1, 0] + cm[0, 1]) / 2)

for the above code I get this typerror. It will so helpful if you could help me resolve this issue with my system.

TypeError Traceback (most recent call last)
in <cell line: 2>()
1 from matplotlib import cm
----> 2 cm[1, 1] / (cm[1, 1] + (cm[1, 0] + cm[0, 1]) / 2)

TypeError: 'module' object is not subscriptable

[rupeshchiluka001]

The cm mentioned in the chapter is referring to confusion_matrix (which is imported from sklearn.metrics), not matplotlib.cm.

[Sunprince22]

Thank you so much @rupeshchiluka001