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cookbook: reusing tasks #680

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edublancas opened this issue Mar 24, 2022 · 0 comments

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edublancas commented Mar 24, 2022 •

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we've been getting the question of re-using tasks a few times now, this is possible turning extract_upstream off, we should add a cookbook:

# pipeline.yaml
meta:
  extract_upstream: false

tasks:
  - source: task.py
    name: task-a
    products: ...
    upstream [another]

  - source: task.py
    name: task-b
    products: ...
    upstream [a-different-one]

Also, show how to use .first in function tasks

def drop_columns(upstream, product):
    train = pd.read_csv(upstream.first["train"])
    holdout = pd.read_csv(upstream.first["holdout"])
    # cleaning....

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