Python lists and ranges

Question

I'm trying to practice my python so I can improve. I'm kinda stuck and not sure how to proceed. I get an error saying "can only concatenate list(not 'int') to list." I'll leave my code and what I'm trying to do below.

• Input a word string (word)
• find the string length of word
• use range() to iterate through each letter in word (can use to range loops)
• Save odd and even letters from the word as lists
  • odd_letters: starting at index 0,2,...
  • even_letters: starting at index 1,3,...

• print odd and even lists

  word = input("Type: ")
  
  word = list(word)
  print(word)
  
  odd_letters = []
  even_letters = []
  
  length = int(len(word))
  
  for i in range(length):
      if i/2 == 0:
          even_letters = even_letters + i
  
      elif i/2 != 0:
          odd_letters = odd_letters + i
  
  print(even_letters)
  print(odd_letters)
  

Answer 1

I wrote this... Let me know what you think...

word = input("Choose a word to test: ")
word_len = len(word)
print(word," contains ",word_len," letters")
odd_letters = []
even_letters = []
for i in range(1,len(word),2):
    even_letters.append(word[i])
for i in range(0,word_len,2):
    odd_letters.append(word[i])

print("Odd letters are: ",odd_letters)
print("Even letters are: ",even_letters)