h5a.AttrID for an attribute through the high-level API-开源...

来自 : CSDN技术社区 发布时间：2021-03-25

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weixin_39887531 2020-12-06 19:34 首页 开源项目 h5a.AttrID for an attribute through the high-level API

First, thanks a lot for also offering a low-level API in addition to the high-level one.

In my case I m making a small validation tool which validates a directory/file based storage format of ours. Among the things the tool has to do is to verify some constraints on HDF5 files (data type, dimensionality, size of datasets and attributes). In doing this, it s important that I can query the exact HDF5 type of a dataset or attribute, since we have tools in C/C that also must read these files, and they are more rigid than h5py, so the tool can t just inspect the numpy dtype and call it a day, but must know the underlying type.

For datasets I was able to use data_set.id.get_type() to get the low-level type for a high-level Dataset, and compare that to constants in h5t. But for attributes, I still haven t found a public API way to go from an attribute on a high-level Dataset, to a AttrID on which I could call get_type to get the low-level type.

I may have missed something, but if it s not possible, it would be great if it could be added. Perhaps as a new type of query method on AttributeManager?

该提问来源于开源项目 h5py/h5py

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weixin_39637924 3月前 1278 would add ds.attrs.get_id(name) 点赞 评论 复制链接分享

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weixin_39887531 3月前

Alright, I might have a go at it. It s been a while since I last looked at it.

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weixin_39614675 3月前

If you can provide a PR adding this, I d be willing to look at it.

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weixin_39887531 3月前

What I ve found, through looking at AttributeManager.__getitem__, that I think might work, is something like attr h5a.open(data_set.id, data_set._e(name)), which would give me the AttrID. But then I d have to use the private CommonStateObject._e metod to encode the name properly :(

I would really like something like AttributeManager.attr_id, such that I could do data_set.attrs.attr_id(name).

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