new value of accumulation partial result where the partial result comes from combining item with the current value of accumulation playing computerfollowing code line by line of execution this either tests that you understand your code (and it works rightor it helps you find where it goes wrong [updating variables (page )successive modification loops (page )more playing computer (page )(amake sure line numbers are labeled (bmake table with heading for line numbersall variables that might be changingand comments (cfollow the order of executionone statement at timebeing careful to update variable values and only use the latest variable valuesand carefully following the flow of control through loops and into and out of function calls with loops and user function callsthe order is not just textual sequential order beginning with python