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import pandas as pd import numpy as np data = { 'user_id': [1, 1, 1, 2, 2, 3, 3, 3, 4], 'date': ['[phone]', '[phone]', '[phone]', '[phone]', '[phone]', '[phone]', '[phone]', '[phone]', '[phone]'], 'revenue': [100, 200, 150, 300, 250, 100, 100, 100, 400] } df = pd.DataFrame(data) df['date'] = pd.to_datetime(df['date']) Посчитать общую сумму выручки (revenue) для каждого пользователя
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