def sum_(expression):
    variable = expression.copy()
    variable.tag.aggregation_scheme = Sum(expression)
    variable.name = expression.name
    return variable
Same as os.path.splitext() but faster.
dataset/ETHPy150Open rizar/attention-lvcsr/libs/blocks/blocks/monitoring/aggregation.py/sum_--crossover with--dataset/ETHPy150Open kayhayen/Nuitka/nuitka/build/inline_copy/lib/scons-2.3.2/SCons/Util.py/splitext