def chart_at(string, index):
    return string[index:index+1]
Verifies that an attempt to delete a timeout within the
dataset/ETHPy150Open aronwoost/sublime-expand-region/latex.py/chart_at--crossover with--dataset/ETHPy150Open pika/pika/tests/unit/select_connection_ioloop_tests.py/IOLoopTimerTestSelect.test_timer_for_deleting_itself