code: 
  
  
  
  
  """simple docstring"""
  
  
  
  from .stack import Stack
  
  
  
  
  
  
  
  def 						_SCREAMING_SNAKE_CASE     (							lowercase_		)		->	bool:
   A__ =       Stack()
   A__ =       {"(": ")", "[": "]", "{": "}"}
   for bracket in parentheses:
    if bracket in bracket_pairs:
     stack.push(lowercase_		)
    elif bracket in (")", "]", "}"):
     if stack.is_empty() or bracket_pairs[stack.pop()] != bracket:
      return False
   return stack.is_empty()
  
  
  if __name__ == "__main__":
        from doctest import testmod
  
        testmod()
  
        SCREAMING_SNAKE_CASE       = ["((()))", "((())", "(()))"]
        print("Balanced parentheses demonstration:\n")
        for example in examples:
              SCREAMING_SNAKE_CASE       = "" if balanced_parentheses(example) else "not "
              print(f'{example} is {not_str}balanced')
  
  
  
  
  
  
style_context: 
  
  
  
  
  """simple docstring"""
  
  
  
  def 						_SCREAMING_SNAKE_CASE     (							lowercase_		)		->	str:
   return " ".join(sorted(set(sentence.split()		)		)		)
  
  
  if __name__ == "__main__":
        import doctest
  
        doctest.testmod()
  
  
  
  
  
  