This program is suppose to take 3 functions and implement it into one program th

Question

This program is suppose to take 3 functions and implement it into one program that computes the sum of the squares of numbers read from a file. The program should prompt for a file name and print out the sum of the squares of the values in the file. Hint: use readlines(). My professor said it should look something like this:
main():
ask for file name
read the file and produce a list of strings
toNumbers()-should be the first function, converts the list of strings into number(probably by the float command)
squareEach()-this function squares each of the numbers
sumList()-this function sums of the squares

here is what i have so far if it helps:(i think part of my problem is naming things)

Explanation / Answer

Sorry I had a typo: s/b: s=sumList(a) not a=sumList(a)

def toNumber(line):
    return float(line)

def squareEach(x):
    y=[]
    for i in x:
        y.append(i**2)
    return y

def sumList(x):
    sum=0.0
    for i in range(len(x)):
        sum=sum+x[i]
    return sum

def main():
    fileName=raw_input("Enter filename:")
    infile=open(fileName,'r')
    a=[]
    for line in infile.readlines():
        a.append(toNumber(line))
    a=squareEach(a)
    s=sumList(a)
    print "The sum of the squared values are: ",s
    infile.close()

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.