linked list example

from List import *

def main():
   arr = eval(input("Enter an array of integers: "))
   strings = ArrayToList(arr)
   integers = ListMap(int, strings)

   print("The list of integers:")
   printList(integers)

   smallest, index = minimumList(integers)
   print("The smallest value in the list:", smallest, "and it exists at:", index)

   subList = getSubList(integers, index)
   print("The sublist:")
   printList(subList)

   s = sumList(subList)
   print("Sum of sublist:", s)

def sumList(lst):
   s = 0
   spot = lst
   while (spot != None):
      s += head(spot)
      spot = tail(spot)
   return s

def getSubList(lst, index):
   spot = lst
   for i in range(0, index, 1):
      spot = tail(spot)
   return tail(spot)

def minimumList(lst):
   count = 0
   index = 0
   smallest = head(lst)
   spot = tail(lst)
   while (spot != None):
      if (head(spot) < smallest):
         smallest = head(spot)
         index = count
      count += 1
      spot = tail(spot)
   return smallest,index+1

def printList(lst):
   spot = lst
   while (spot != None):
      print(head(spot))
      spot = tail(spot)

main()