Python while loop counter ignores limit

I am new to stackoverflow so I apologise if I have not formatted my code correctly. In my hangman game, the while loop is supposed to stop when count==0. However, it stops when count=-2. What have I done wrong and how can I solve it?
Thanks!

word = 'hello'
dict1 = {}
import time

def words(words):
  count = len(words) + 3
  lines = []
  for i in words:
      lines.append('_')

  print('It is a', len(word), 'letter wordn',
      'You have ', count, 'guesses!')
  time.sleep(1)
  print('The first word is: ', words[0])
  while count > 0:
      for i in words:
          count -= 1
          time.sleep(1)
          answer = input('please input a letter')
          if answer=='':
              print('This is incorrect. You have ',count,' goes left')
          elif answer == '{}'.format(answer) in word:
              dict1.setdefault(answer, 0)
              dict1[answer] = dict1[answer] + 1
              for k, v in dict1.items():
                  if dict1[answer] > 1:
                      print('No duplicates! You have ', count, 'goes left')
                  else:
                      for i in range(0, len(word)):
                          if word[i] == answer:
                              lines[i] = answer
                      print( 'n Well done! You have ', count, 'goes left!')
              hangwords = ''.join(map(str, lines))
              print(hangwords)
              if hangwords == words:
                  print('You have won! You had', count, 'goes left!')
                  return hangwords

          else:
            print('This is incorrect! You have', count, 'goes left')

  if count==0:
      print('You have failed. The word was '+word)
      exit()

print(words(word))