fetch对列表数据无效

[fastpx2014]

代码示例

from borax.datasets.fetch import fetch

points =  [
    ['a', 1, 3],
    ['b', 2, 4]
]

names, xs = fetch(points, 0, 1) # 预期 ['a', 'b'], [1,2]
names, xs = fetch(points, 0, 1, getter=lambda item, key: item[key])

代码执行错误

  File "E:\projects\demo.py", line 8, in fujian_area_bar
    names, xs = fetch(points, 0, 1)
  File "D:\py\lib\site-packages\borax\datasets\fetch.py", line 72, in fetch
    return list(ifetch(iterable, key, *keys, default=default, defaults=defaults, getter=getter))
  File "D:\py\lib\site-packages\borax\datasets\fetch.py", line 44, in _getter
    return partial(bget, key=key, default=default)(item)
  File "D:\py\lib\site-packages\borax\datasets\fetch.py", line 20, in bget
    return getattr(obj, key)
TypeError: getattr(): attribute name must be string

[fastpx2014]

    try:
        return obj[key]
    except KeyError:
        pass

该段代码无法处理 TypeError