docs: def list_contains(list_of_strings, substring, return_true_false_array=False):
      """ Get strings in list which contains substring.
  
      """
      key_tf = [keyi.find(substring) != -1 for keyi in list_of_strings]
      if return_true_false_array:
          return key_tf
      keys_to_remove = list_of_strings[key_tf]
      return keys_to_remove