[英]How to perform groupby in one column and count distinct values of another column in each group in pandas
提取條件后,將它們分組並制成表格。
df['part_work_hour'] = df[df['Line_Type'] == 'parts'].groupby(['Work_Order_Number', 'Line_Type'])['Work_Duration'].transform(lambda x: x.mean() / x.count())
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