old_contents: def is_contains_unique_chars(input_str: str) -> bool:
      """
      Check if all characters in the string is unique or not.
      >>> is_contains_unique_chars("I_love.py")
      True
      >>> is_contains_unique_chars("I don't love Python")
      False
  
      Time complexity: O(n)
      Space compexity: O(1) 19320 bytes as we are having 144697 characters in unicode
      """
  
      # Each bit will represent each unicode character
      # For example 65th bit representing 'A'
      # https://stackoverflow.com/a/12811293
      bitmap = 0
      for ch in input_str:
          ch_unicode = ord(ch)
          ch_bit_index_on = pow(2, ch_unicode)
  
          # If we already turned on bit for current character's unicode
          if bitmap >> ch_unicode & 1 == 1:
              return False
          bitmap |= ch_bit_index_on
      return True
  
  
  if __name__ == "__main__":
      import doctest
  
      doctest.testmod()
  
new_contents: def is_contains_unique_chars(input_str: str) -> bool:
      """
      Check if all characters in the string is unique or not.
      >>> is_contains_unique_chars("I_love.py")
      True
      >>> is_contains_unique_chars("I don't love Python")
      False
  
      Time complexity: O(n)
      Space complexity: O(1) 19320 bytes as we are having 144697 characters in unicode
      """
  
      # Each bit will represent each unicode character
      # For example 65th bit representing 'A'
      # https://stackoverflow.com/a/12811293
      bitmap = 0
      for ch in input_str:
          ch_unicode = ord(ch)
          ch_bit_index_on = pow(2, ch_unicode)
  
          # If we already turned on bit for current character's unicode
          if bitmap >> ch_unicode & 1 == 1:
              return False
          bitmap |= ch_bit_index_on
      return True
  
  
  if __name__ == "__main__":
      import doctest
  
      doctest.testmod()
  
subject: fix typo (#6375)