関連ワード:  how to tokenize a string in python    how to tokenize a string in python using nltk    how to split a string in python    how to split a string in python by character    how to split a string in python with multiple delimiters    how to split a string in python into characters    how to split a string in python by length    how to split a string in python by space    how to split a string in python without space    how to split a string in python using for loop