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maybe you're passing

product

to the function that stores the

get.csv

instead of

product[key]

?

sure - just generated code with

ploomber skaffold

import pandas as pd
from sklearn import datasets


def get(product):
    d = datasets.load_iris()
    df = pd.DataFrame(d['data'])

    df.columns = d['feature_names']
    df['target'] = d['target']
    df.to_csv(product, index=False)

ah yes. i see the problem. so functions cannot generate output notebooks. if you want an output notebook, your source must be a script or a notebook. if you want to keep the function, then remove the

nb: outputs/raw/get.ipynb

and then in your get function change

<http://df.to|df.to>_csv(product, index=False)

to

<http://df.to|df.to>_csv(product['data'], index=False)

Ah, ok - gotcha. So the step itself must be a script or notebook. Thanks! Will try that