input: Write a function to remove all punctuations from a given string of sentences. If the given string is empty then return the 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("No punctuation here") == "No punctuation here"
  assert remove_punctuations("") == ""
output: def remove_punctuations(s):
      import string
      return s.translate(str.maketrans('', '', string.punctuation))