input: Write a function to remove all punctuations from a given string of sentences. If the given string is empty then return an empty string.
  def remove_punctuations(s):
      return s.translate(str.maketrans('', '', string.punctuation))
  assert remove_punctuations("This is a sample string!")=="This is a sample string"
  assert remove_punctuations("Hello, World!")=="Hello World"
  assert remove_punctuations("Punctuation: [removed].")=="Punctuation removed"
  assert remove_punctuations("")==""
  assert remove_punctuations("NoPunctuation")=="NoPunctuation"
output: def remove_punctuations(s):
      import string
      return s.translate(str.maketrans('', '', string.punctuation))