Remove the characters which have odd index

Remove the characters which have odd index values of a given string.

def odd_values_string(S):
  result = ""
  for i in range(len(S)):
    if i % 2 == 0:
      result = result + S[i]
  return result

# test
print(odd_values_string('abcdef'))             # ace
print(odd_values_string('python'))             # pto

See also

https://www.w3resource.com/python-exercises/string/python-data-type-string-exercise-11.php