Question

in python, please provide code that can be edit.

Create software for a full-service voting machine. The user (voter) supplies a voter ID and the candidate he is voting for. The program checks for

• The user is a registered voter, by comparing the user's voter ID to a list of valid voter IDs
• The user has not already voted, by comparing the user's voter ID to a list of voter IDs of people who have already voted
• The user is voting for a valid candidate, by comparing the vote supplied to a list of valid candidate (no write-ins allowed, at least at this point)

If everything is valid the vote is counted and added to a total for the specified candidate

If the user is not a registered voter he can register to vote. This adds his name to the registeredVoter list and makes it immediately possible for him to vote

At the end of the voting period, the winning candidate is announced along with the total number of votes for that candidate and the total number of votes for all candidates

Answer 1

#voting_machine.py
#function that generates voter ids from starting to ending range
#voter id format VOXXXX --> where X is the digit
def generateVoters(start_range, end_range):
   voters = []
   for i in range(start_range, end_range):
       pre = "VO"+str(i)
       voters.append([pre,1])
   return voters
#function to print candidates
def print_candidates(candidates):
   print("*****************************\n")
   print(" Welcome to 2019 Elections\n")
   print("Participating Candidates are:\n")
   for i,cand in enumerate(candidates):
       print(i+1,".",cand[0].title())
   print("\n*****************************\n")
#function that returns given voter is valid
#voter is already voter or not
def validate_voter(voters,voter):
   #for each voter in voters list
   for i in range(len(voters)):
       #if voter passed is present in voters list
       if(voters[i][0] == voter):
           #if voter is not already voted return index of i
           if(voters[i][1] == 1):
               return i
           #else return 2 , which stands for already voted
           else:
               return -2
   #if voter not present return 0
   return -1
def validate_cand(candidates, cand):
   #for each candidate
   for i in range(len(candidates)):
       #find if candidate passed is equal to the candiates in list
       #return index of candidate in list
       if(candidates[i][0] == cand):
           return i
   #return -1 if candidate is not present
   return -1
#FUNCTION that finds the winner among the candidates
def find_winner(candidates):
   #intial max votes and max votes candidate index in list
   max_votes = 0
   cand_ind = -1
   #for each candidate find max votes and index of the candidatesh/h
   for ind in range(len(candidates)):
       votes = candidates[ind][1]
       if(max_votes < votes):
           max_votes = votes
           cand_ind = ind
   #check for tied candidates
   count = 0
   #intially put candidate with max votes find above
   tied_cands = [candidates[cand_ind]]
   for i in range(len(candidates)):
       votes = candidates[i][1]
       #if candidate is not the one find in above for loop
       #with same number of max votes add it to the tied cands array
       if(votes == max_votes and i != cand_ind):
           count += 1
           tied_cands.append(candidates[i])
   #return the candidates tied
   return tied_cands
voters = generateVoters(1000,1200)
candidates = [["joe biden",0],["kamala harris",0],["bernie sanders",0],["bill de blasio",0],["elizabeth warren",0]]
voter = 0
choice = ""
while(choice.upper() != "Q" ):
   print_candidates(candidates)
   voter = input("\nEnter Voter Id: ").strip().upper()
   ind = validate_voter(voters, voter)
   if(ind >= 0):
       cand = input("Enter Candidate Name you Wish to Vote for: ").strip().lower()
       cand_ind = validate_cand(candidates,cand)
       if(cand_ind == -1):
           print("Invalid Candidate Name Entered")
       else:
           candidates[cand_ind][1] += 1
           voters[ind][1] = 0
   elif(ind == -2):
       print("Voter with voter Id:",voter," is Already Voted")
   else:
       print("Invalid Voter Id Entered")
   choice = input("\nEnter Q to Quit or any key to continue: ").strip()
cand = find_winner(candidates)
print("\n")
if(len(cand) == 1):
   print("*****************************\n")
   print("Winner of Election is:",cand[0][0].title(),"With",cand[0][1],"votes.")
   print("\n*****************************\n")
else:
   print("\n*****************************\n")
   print("Candidates are tied with",cand[0][1],"Votes.")
   print("Tied Candidates are:")
   for cands in cand:
       print(cands[0].title())
   print("\n*****************************\n")