def t2(self, ai, b=None):
To be passed the result of the metric/test
dataset/ETHPy150Open francelabs/datafari/windows/python/Lib/idlelib/idle_test/test_calltips.py/TC.t2--crossover with--dataset/ETHPy150Open sunlightlabs/clearspending/completeness/__init__.py/Result.record_val