関連ワード:  check for a word in a string python    search for a word in a string python    finding a word in a string python    check if word in a string python    how to check for a specific word in a string python    check if a word appears in a string python    finding longest word in a string python    how to search for a specific word in a string python    how to detect a word in a string python    check if given words are present in a string