Is my Tree code too long?

[BladedSupernova]

Also I made the code smaller, is it really small now for what it does or not at all?? Just curious.

tree = ['']
window_start = 1
window_end = 4
for count2 in range(2):
  window = 'ababa'[window_start - 1 : window_end]
  window_start = window_start + 1
  window_end = window_end + 1
  char_location = 1
  node = 1
  for count in range(4):
    char_in_window = window[char_location - 1]
    char_location = char_location + 1
    char_index = tree[node - 1].find(char_in_window) + 1
    if char_index == 0:
      tree[node - 1] = str(tree[node - 1]) + str(char_in_window)
      if node == len(tree):
        tree.append([])
      tree[(node + 1 - 1)].append(len(tree) + 1)
      tree.append('')
      node = len(tree)
    else:
      node = tree[(node + 1 - 1)][char_index - 1]
print(tree)