input: import string
  
  def remove_punctuations(s):
      """
      Removes all punctuations from a given string of sentences.
      
      >>> remove_punctuations("This is a sample string!")
      'This is a sample string'
      >>> remove_punctuations("Hello, World! How are you?")
      'Hello World How are you'
      """
      return s.translate(str.maketrans('', '', string.punctuation))
output:     return s.translate(str.maketrans('', '', string.punctuation))