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def find_avg(list_num): result_sum = 0 for num in list_num: result_sum += num result_avg = result_sum/len(list_num) find_avg([5, 8, 5]) print(result_avg)
When the control calls print(result_avg) , result_avg , as a local variable whose scope is bound to find_avg , is no longer present in memory. It will throw a NameError exception. (w3schools.com/python/gloss_python_global_variables.asp)
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