input: def remove_punctuations(s: str) -> str:
      """Remove all punctuations from a given string of sentences.
      >>> remove_punctuations("Hello, world!")
      'Hello world'
      >>> remove_punctuations("This is a sample string!")
      'This is a sample string'
      """
  
      import string
      return s.translate(str.maketrans('', '', string.punctuation))
output:     import string
      return s.translate(str.maketrans('', '', string.punctuation))