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