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# ask-community
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Umar Hussain

01/07/2023, 11:04 PM
Hello! I'm attempting to do something more complex than the initial tutorials with
branching graphs
I have two ops:
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@op{out={'output_1' : Out(is_required=False)})
def get_parents_dataframe():
    df = pd.read_sql('...')
    data = df.groupby('parent')['id'].agg(list)
    for item in data.items():