Fang Chao

How to post multipartWriter form using Streaming?

3

## Long story short I post a from with file datas to S3. ## Expected behaviour I want using Streaming to read file ## my code ``` multipartWriter = aiohttp.MultipartWriter('mixed')...

[BUG]: Pure Virtual Function Call When Creating Python-derived Instance via C++ Callback

4

### Required prerequisites - [x] Make sure you've read the [documentation](https://pybind11.readthedocs.io). Your issue may be addressed there. - [x] Search the [issue tracker](https://github.com/pybind/pybind11/issues) and [Discussions](https:/pybind/pybind11/discussions) to verify that this hasn't...