def _normalize(row):
    total = row.abs().sum()
    proportion = row/total
    return proportion
Test a column on a mixin with an alternate attribute name,
dataset/ETHPy150Open QuantSoftware/QuantSoftwareToolkit/QSTK/qstksim/tradesim.py/_normalize--crossover with--dataset/ETHPy150Open zzzeek/sqlalchemy/test/ext/declarative/test_mixin.py/DeclarativeMixinTest.test_columns_single_table_inheritance