how can i aggregate without group by in pandas
df.groupby(lambda _ : True).agg(new_col_name = ('col_name', 'agg_function'))how can i aggregate without group by in pandas
df.groupby(lambda _ : True).agg(new_col_name = ('col_name', 'agg_function'))pandas agg rename columns
grouped = df.groupby('id').agg({'col1': [('name1', 'sum')], 'col2': [('name2_mean', 'sum'), ('name2_custom_std', lambda x: np.std(x))]})
grouped.columns = grouped.columns.droplevel()Copyright © 2021 Codeinu
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