A string is not just a special kind of tuple. They have many similar properties, in particular, both are iterators, but they are distinct types and each defines the behavior of the in operator differently. See the docs on this here: https://docs.python.org/3/reference/expressions.html#in

A string is not just a special kind of tuple. They have many similar properties, in particular, both are iterators, but they are distinct types and each defines the behavior of the in operator differently. See the docs on this here: https://docs.python.org/3/reference/expressions.html#in

To solve your problem of finding whether one tuple is a sub-sequence of another tuple, writing an algorithm like in your answer would be the way to go. Try something like this:

def contains(inner, outer):
  inner_len = len(inner)
  for i, _ in enumerate(outer):
    outer_substring = outer[i:i+inner_len]
    if outer_substring == inner:
      return True
  return False