pybind11

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proposal: single template to check castability and return result as std::optional

1

## Issue description I find myself often checking whether a particular py::object wraps this or that c++ class, and if it does, extract the result. This can be done with...

eudoxos

Issue binding protobuf RepeatedField and RepeatedPtrField

1

**OS**: Windows 10 **Compiler**: MSVC 2017 x64 **Python**: Python 3.6.4 (x64) I'm trying to bind repeated fields generated by google protocol buffers. The binding code uses a custom `type_caster` to...

cjgdev

[BUG]: send a python function to c++ as a std::function to create Python subclass instance,the constructor of python class be called but the instance still the base class

1

### 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...

ddv5

compare_buffer_info does not consider <i and i equal on a little-endian machine

1

The `compare_buffer_info` template will reject buffer formats of `

eric-wieser

Build platform ABI tag improvements

3

With pybind11 and nanobind considering changes to the platform ABI tag, there is a nice opportunity to make them consistent with each other. This would make it potentially possible to...

wjakob

### 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...

tttapa

### 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...

MaartenBaert

2.3.0 regression: <class 'bytes'> is not converted to std::vector<uint8_t> anymore

5

To reproduce, create the following C++ extension: ```c++ #include #include #include #include void take_bytes(const std::vector &raw) {} PYBIND11_MODULE(my_ext, m) { m.def("take_bytes", &take_bytes); } ``` And invoke it from a Python...

Vlad-Shcherbina