def lpush_col(self, col, header=None):

        self.insert_col(0, col, header=header)
Test that a running iterator will not run to completion when the
dataset/ETHPy150Open cloudera/hue/desktop/core/ext-py/tablib-0.10.0/tablib/core.py/Dataset.lpush_col--crossover with--dataset/ETHPy150Open twisted/twisted/twisted/test/test_cooperator.py/CooperatorTests.testStopRunning