Code in tutorial not working about lifetimes

[CamDavidsonPilon]

I can confirm I get the same thing, investigating now.

Edit: it seems to be caused by c2bf495#diff-ca060ac937e79ba22cb0a6e9b881675aL43. Unfortunately, I can't recall why I made that change.

[CamDavidsonPilon]

Hmm, the algorithm in the background is random - perhaps you got unlucky? Try running it again, and please report back the findings.

[paoloRais]

I re-ran it several times, obtaining the same results.

I know it is unlikely, but can this strange behaviour be related to the fact that I am using Python 3.4 (while your tutorial seems to be in Python 2.7)?

I am also experiencing issues with this part of the tutorial:

from lifetimes.datasets import load_summary_data_with_monetary_value

summary_with_money_value = load_summary_data_with_monetary_value()
summary_with_money_value.head()
returning_customers_summary = summary_with_money_value[summary_with_money_value['frequency'] > 0]

returning_customers_summary.head()

I get an error:

ImportError: cannot import name 'load_summary_data_with_monetary_value'

When I try to import the file cdnow_customers_transactions.csv by hand, the result of returning_customers_summary.head() is:

             frequency  recency      T  monetary_value
customer_id  
1                    2    30.43  38.86           22.35
2                    1     1.71  38.86           11.77
6                    7    29.43  38.86           73.74
7                    1     5.00  38.86           11.77
9                    2    35.71  38.86           25.55

Which is consistent with the content of the file (but not with the tutorial).

[paoloRais]

I installed a separate Python 2.7 environment using Anaconda, and I still obtain the same graph. I wonder what the reason for this can be. I am still testing things and I will keep you updated.

[CamDavidsonPilon]

The first issue should be solved in 3eda411

[CamDavidsonPilon]

I've upload this bug fix to PyPI too. I image the latest should also have cdnow_customers_transactions.csv - let me know if this is wrong.

[paoloRais]

Thank you!

[Kristalli]

😀