learn python the hard way 第48个习题答案（ex48）

自己写的代码 可能有不完善的地方 请见谅

def scan(content):
    stuff = {'north': 'direction',
             'south': 'direction',
             'east': 'direction',
             'go': 'verb',
             'kill': 'verb',
             'eat': 'verb',
             'the': 'stop',
             'in': 'stop',
             'of': 'stop',
             'bear': 'noun',
             'princess': 'noun',
             3: 'number',
             91234: 'number',
             'IAS': 'error',
             'ASDFADFASDF': 'error',
             1234: 'number'}

    result = []
    words = content.split()

    for word in words:
        if word.isdigit():
            word = int(word)
            result.append((stuff[word], word))
        else:
            result.append((stuff[word], word))
    return result