Can someone pin point why my data won't write to my file? My results are all 0's.

def main():
  endProgram = 'no'
  while endProgram == 'no':
    option = 0
    print ('Enter 1 to enter in new data and store to file')
    print ('Enter 2 to display data from the file')
    option = int(input('Enter now ->'))

    # declare variables
    pints = [0] * 7
    totalPints = 0
    averagePints = 0

    if option == 1:
      # function calls
      pints = getPints(pints)
      totalPints =getTotal(pints, totalPints)
      averagePints = getAverage(totalPints, averagePints)
      writeToFile(averagePints, pints)

    else:
      readFromFile(averagePints, pints) 

    endProgram = input('Do you want to end program? (Enter no or yes): ')
    while not (endProgram == 'yes' or endProgram == 'no'):
      print ('Please enter a yes or no')
      endProgram = input('Do you want to end program? (Enter no or yes): ')

#the getPints function
def getPints(pints):
   counter = 0
   while counter < 7:
     pints[counter] = input('Enter pints collected: ')
     counter = counter + 1
   return pints

#the getTotal function
def getTotal(pints, totalPints):
   counter = 0
   while counter < 7:
     totalPints = int(totalPints) + int(pints[counter])
     counter = counter + 1
   return totalPints

#the getAverage function
def getAverage(totalPints, averagePints):
   averagePints = float(totalPints)/7
   return averagePints

#the writeToFile function
def writeToFile(averagePints, pints):
   outFile = open('blood.txt', 'a')
   outFile.write('Pints Each Hour: '+'\n') 
   counter = 0
   while counter < 7:
     outFile.write(str(pints[counter])+'\n')
     counter = counter + 1
   outFile.write('Average Pints: '+'\n') 
   outFile.write(str(averagePints) + '\n\n')
   outFile.close()

#the readFromFile function
def readFromFile(averagePints, pints):
   inFile = open('blood.txt', 'r')
   str1 = inFile.read()
   print (str1)
   pints = inFile.read()
   print (pints)
   print #adds a blank line
   averagePints = inFile.read()
   print (averagePints)
   inFile.close()

# calls main
main()

def main():
  endProgram = 'no'

  while endProgram == 'no':
    months = ['January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December']
    option = 1
    print ('Enter 1 to enter new data')
    print ('Enter 2 to display to the screen')
    print ('Enter 3 to write savings to the file')
    print ('Enter 4 to read savings from the file')
    option = int(input('Enter option now: '))

    notGreenCost = [0] * 12
    goneGreenCost = [0] * 12
    savings = [0] * 12

    if option == 1:
      notGreencost = getNotGreen(notGreenCost, months)
      goneGreenCost = getGoneGreen(goneGreenCost, months)
      savings = energySaved(notGreenCost, goneGreenCost, savings)
    elif option == 2:
      displayInfo(notGreenCost, goneGreenCost, savings, months)
    elif option == 3:
      writeToFile(months, savings)
    elif option == 4:
      months, savings = readFromFile()

    endProgram = input('Do you want to end program? (Enter no or yes): ')
    while not (endProgram == 'yes' or endProgram == 'no'):
      print ('Please enter a yes or no')
      endProgram = input('Do you want to end program? (Enter no or yes): ')

def getNotGreen(notGreenCost, months):
  counter = 0
  while counter < 12:
    print ('Enter NOT GREEN energy costs for', months[counter])
    notGreenCost[counter] = input('Enter now -->')
    counter = counter + 1
  print ('-------------------------------------------------')
  return notGreenCost


def getGoneGreen(goneGreenCost, months):
  counter = 0
  while counter < 12:
    print ('Enter GONE GREEN energy costs for', months[counter])
    goneGreenCost[counter] = input('Enter now -->')
    counter = counter + 1
  print ('-------------------------------------------------')
  return goneGreenCost


def energySaved(notGreenCost, goneGreenCost, savings):
  counter = 0
  while counter < 12:
    savings[counter] = int(notGreenCost[counter]) - int(goneGreenCost[counter])
    counter = counter + 1
  return savings


def displayInfo(notGreenCost, goneGreenCost, savings, months):
  counter = 0
  print ('                        SAVINGS                      ')
  print ('_____________________________________________________')
  print ('SAVINGS     NOT GREEN     GONE GREEN       MONTH')
  print ('_____________________________________________________')

  while counter < 12:
    print ('$', savings[counter], '         $', notGreenCost[counter], '         $', goneGreenCost[counter], '         ', months[counter] )
    counter = counter + 1
  return notGreenCost, goneGreenCost, savings, months

def writeToFile(months, savings):
  outFile = open('savings1.txt', 'a')
  outFile.write('Energy Savings: '+'\n')
  counter = 0
  while counter < 12:
    outFile.write(str(months[counter]) + '\n')
    outFile.write(str(savings[counter]) + '\n')
    counter = counter + 1
  outFile.close()

def readFromFile():
  inFile = open('savings1.txt', 'r')
  months = inFile.read()
  print (months)
  savings = inFile.read()
  print (savings)
  inFile.close()
  return months, savings



main()