input: from typing import List
  
  
  def filter_strings_containing(strings: List[str], substring: str) -> List[str]:
      """ Return a list of strings from the input list that include the specified substring
      >>> filter_strings_containing([], 'a')
      []
      >>> filter_strings_containing(['abc', 'bacd', 'cde', 'array'], 'a')
      ['abc', 'bacd', 'array']
      """
output:     return [s for s in strings if substring in s]