Python Programming: An Introduction To Computer Science ...

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# average1.py # A program to average a set of numbers # Illustrates counted loop with accumulator

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def main(): n = input("How many numbers do you have? ") sum = 0.0 for i in range(n): x = input("Enter a number >> ") sum = sum + x print "\nThe average of the numbers is", sum / n 8 & 9'9 sum/n % 6

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# average4.py # A program to average a set of numbers # Illustrates sentinel loop using empty string as sentinel

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line = infile.readline() while line != "" #process line line = infile.readline()

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