input: from typing import List
  
  def remove_punctuations(s: str) -> str:
      """ Removes all the punctuation marks from the given string of sentences.
      >>> remove_punctuations("This is a sample string!")
      'This is a sample string'
      >>> remove_punctuations("Hello, World! Is it really true?")
      'Hello World Is it really true'
      """
output:     import string
      return ''.join([char for char in s if char not in string.punctuation])