从字典列表中提取字符串

Question

如何在此词典列表中仅打印"mid"或"status"？

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list = [{'status': 'OK', 'mid': '6269'}, {'status': 'OK', 'mid': '6270'},{'status': 'OK', 'mid': '6271'}, {'status': 'OK', 'mid': '6272'}, {'status': 'OK', 'mid': '6273'}, {'status': 'OK', 'mid': '6274'},{'status': 'OK', 'mid': '6288'}, {'status': 'OK', 'mid': '6289'}]

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我尝试过:print list[0]['mid']但它只给出了列表中第一项的'mid'值？我怎么能这样做呢list？

Answer 1

使用列表理解:

data = [{'status': 'OK', 'mid': '6269'},
        {'status': 'OK', 'mid': '6270'},
        {'status': 'OK', 'mid': '6271'},
        {'status': 'OK', 'mid': '6272'},
        {'status': 'OK', 'mid': '6273'},
        {'status': 'OK', 'mid': '6274'},
        {'status': 'OK', 'mid': '6288'},
        {'status': 'OK', 'mid': '6289'}]

print [item['mid'] for item in data]

PS:不要命名你的变量list,你不能使用内置的list.