Driver code
if __name__ == " _ _ main _ _ " : NEW_LINE INDENT string = " this ▁ is ▁ a ▁ test ▁ string " NEW_LINE pat = " tist " NEW_LINE print ( " Smallest ▁ window ▁ is ▁ : ▁ " ) NEW_LINE print ( findSubString ( string , pat ) ) NEW_LINE DEDENT