How to realize array summation and average by python

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array sum and average ls=[4,9,19,8,391,39,9,283,45]sum(ls)average=sum(ls)/len(ls)print ('accumulated value', sum(ls),'average', average) Find the average of the array elements

Python environment: Python 2.7.12 x64

IDE：Wing IDE Professional 5.1.12-1

Topic: Finding the Average Value of Array Elements

#Find the average of array elements a=[1,4,8,10,12]b=len(a)sum=0print "Array length is: ",bfor i in a: sum=sum+iprint "Mean is: ",sum/b

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