関連ワード:  python index start from 0 or 1    python list index start from 0 or 1    does python index start from 0 or 1    python array index start from 0 or 1    python index from 0 or 1    string index starts from 0 or 1 in python    does python index from 0 or 1    python list index from 0 or 1    does python index start at 0