Https://app.dataquest.io/m/468/business-metrics/8/churn-rate

Hi ,

https://app.dataquest.io/m/468/business-metrics/8/churn-rate

You need to import numpy first , and amend code to np.arange for this to work in jupyter notebook without error.

Kind regards
Gavin Vadivalloo

2 Likes

Or you can use

arange = __import__("numpy").arange

Similar you did for

Ellipse = __import__("matplotlib").patches.Ellipse