input: def is_happy(s):
      """Given a string s, determine whether it is a happy string.
      A string is considered happy if it has a minimum length of 3 and each set of 3 consecutive characters are unique.
      For example:
      is_happy(a) => False
      is_happy(aa) => False
      is_happy(abcd) => True
      is_happy(aabb) => False
      is_happy(adb) => True
      is_happy(xyy) => False
      """
output:     
      if len(s) < 3:
          return False
  
      for i in range(len(s) - 2):
          if len(set(s[i:i+3])) < 3:
              return False
  
      return True
  