pybind11 | Seamless operability between C++11 and Python

by pybind C++ Version: 2.12.0 License: Non-SPDX

X-Ray Key Features Code Snippets(6)Community Discussions(10)Vulnerabilities Install Support

kandi X-RAY | pybind11 Summary

pybind11 is a C++ library. pybind11 has no bugs, it has no vulnerabilities and it has medium support. However pybind11 has a Non-SPDX License. You can download it from GitHub.

Seamless operability between C++11 and Python

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Quality

Security

License

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Support

pybind11 has a medium active ecosystem.

It has 12952 star(s) with 1849 fork(s). There are 247 watchers for this library.

There were 1 major release(s) in the last 6 months.

There are 451 open issues and 1538 have been closed. On average issues are closed in 230 days. There are 113 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of pybind11 is 2.12.0

Quality

pybind11 has 0 bugs and 0 code smells.

Security

pybind11 has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

pybind11 code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

pybind11 has a Non-SPDX License.

Non-SPDX licenses can be open source with a non SPDX compliant license, or non open source licenses, and you need to review them closely before use.

Reuse

pybind11 releases are available to install and integrate.

It has 9077 lines of code, 681 functions and 60 files.

It has medium code complexity. Code complexity directly impacts maintainability of the code.

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pybind11 Key Features

No Key Features are available at this moment for pybind11.

pybind11 Examples and Code Snippets

overview.rst

C++

Lines of Code : 12

License : Non-SPDX (NOASSERTION)

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void print_list(py::list my_list) {
    for (auto item : my_list)
        std::cout << item << " ";
}

>>> print_list([1, 2, 3])
1 2 3

void print_vector(const std::vector &v) {
    for (auto item : v)
        std::cout <&

release.rst

C++

Lines of Code : 6

License : Non-SPDX (NOASSERTION)

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#define PYBIND11_VERSION_MAJOR X
#define PYBIND11_VERSION_MINOR Y
#define PYBIND11_VERSION_PATCH Z.dev1

brew bump-formula-pr --url https://github.com/pybind/pybind11/archive/vX.Y.Z.tar.gz

nox -s build
twine upload dist/*

Intro

C++

Lines of Code : 1

License : Non-SPDX (NOASSERTION)

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Contents:

pybind11 - benchmark

Python

Lines of Code : 74

License : Non-SPDX

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import datetime as dt
import os
import random

nfns = 4  # Functions per class
nargs = 4  # Arguments per function


def generate_dummy_code_pybind11(nclasses=10):
    decl = ""
    bindings = ""

    for cl in range(nclasses):
        decl += f"clas

Build pyBind11 module

python

Lines of Code : 5

License : Permissive (MIT License)

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def build_pybind11(c):
    """Build the pybind11 wrapper library"""
    print_banner("Building PyBind11 Module")
    compile_python_module("pybind11_wrapper.cpp", "pybind11_example")
    print("* Complete")

Test PyBind11 module .

python

Lines of Code : 4

License : Permissive (MIT License)

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def test_pybind11(c):
    """Run the script to test PyBind11"""
    print_banner("Testing PyBind11 Module")
    invoke.run("python3 pybind11_test.py", pty=True)

Community Discussions

Trending Discussions on pybind11

Pybind11 Shared Library Visibility Issues

Int8 quantization of a LSTM model. No matter which version, I run into issues

Wrap python argument for pybind11 overloaded methods

How to statically link PROJ to pybind11

How to use pybind11 in omnet++ projects like veins

pybind11 - Return a shared_ptr of std::vector

Calling member function through a pointer from Python with pybind11

Any C++ macro that can export all member variables of a struct for pybind11

How to call a python function from C++ with pybind11?

pybind11: send MPI communicator from Python to CPP

QUESTION

Pybind11 Shared Library Visibility Issues

Asked 2022-Apr-02 at 13:51

We are trying to compile some c++ code into a shared library with pybind11. This shared library does not call python functions, but is instead called from a python script. Then we want to create an entrypoint C++ executable that uses this shared library to test the c++ code. It does not interface with pybind or the python side in any way.

When we do so, our shared library compiles successfully. However, in the executable target, we get a variety of linker errors specifying 'undefined reference to' our constructors in the shared library.

After reading the pybind documentation, we believe this is because the pybind11_add_module function forces cmake to compile the shared library with a 'hidden' visibility flag. We subsequently try to expose the relevant functions in our c++ shared library so that our executable can access it (using __attribute__((visibility("default")))). This resolves the undefined references to our constructors, but results in the errors provided below. Note that these errors occur when compiling our executable. The shared library still compiles succsesfully.

...

ANSWER

Answered 2022-Apr-02 at 13:51

I'm not sure what causes the errors you're getting, but I can suggest a workaround, and maybe a better way of doing this.

You could build two shared libraries: one that contains your C++ code you need to test, and a Pybind11 extension that dynamically links to the first one and only provides the binding definitions.

Then you could link with the first one for the tests, without Python getting in the way.

Source https://stackoverflow.com/questions/71710878

QUESTION

Int8 quantization of a LSTM model. No matter which version, I run into issues

Asked 2022-Mar-11 at 09:42

I want to use a generator to quantize a LSTM model.

Questions

I start with the question as this is quite a long post. I actually want to know if you have manged to quantize (int8) a LSTM model with post training quantization.

I tried it different TF versions but always bumped into an error. Below are some of my tries. Maybe you see an error I made or have a suggestion. Thanks

Working Part

The input is expected as (batch,1,45). Running inference with the un-quantized model runs fine. The model and csv can be found here:
csv file: https://mega.nz/file/5FciFDaR#Ev33Ij124vUmOF02jWLu0azxZs-Yahyp6PPGOqr8tok
modelfile: https://mega.nz/file/UAMgUBQA#oK-E0LjZ2YfShPlhHN3uKg8t7bALc2VAONpFirwbmys

...

ANSWER

Answered 2021-Sep-27 at 12:05

If possible, you can try modifying your LSTM so that is can be converted to TFLite's fused LSTM operator. https://www.tensorflow.org/lite/convert/rnn It supports full-integer quantization for basic fused LSTM and UnidirectionalSequenceLSTM operators.

Source https://stackoverflow.com/questions/69270295

QUESTION

Wrap python argument for pybind11 overloaded methods

Asked 2022-Feb-15 at 22:12

I'm trying to create python bindings for some legacy C++ code which implemented its own 'extended' string class aString which it uses extensively. This works fine for .def(py::init()), but once I start trying to wrap overloaded methods pybind11 does not appear to automatically cast std::string to aString. MWE adapted from the pybind11 docs:

src/example.cpp:

...

ANSWER

Answered 2022-Feb-15 at 14:01

You can enable an implicit conversion between types by adding the following statement:

Source https://stackoverflow.com/questions/71124629

QUESTION

How to statically link PROJ to pybind11

Asked 2022-Feb-13 at 03:03

I'm interested in statically linking PROJ to a library created with pybind11.
but, I get error by cmake.

Why am I getting this error and how can I fix it?

My CMakeLists.txt is this.

...

ANSWER

Answered 2022-Feb-13 at 03:03

Shared libraries must have position independent code, but your version of PROJ was built without it; you will have to rebuild PROJ with PIC.

Source https://stackoverflow.com/questions/71088327

QUESTION

How to use pybind11 in omnet++ projects like veins

Asked 2022-Feb-10 at 10:11

please suggest how to use pybind11 in omnet++ projects like veins. I am getting compile time errors. I can see so many posibilities with python being used in omnet++ simulation tool.

I tried this link Windows/Cygwin - Can't use pybind11 - make error for setting flags but not was successful.

I am using Instant veins vm.

...

ANSWER

Answered 2022-Feb-10 at 10:11

Just added

Include directories /usr/include/pybind11, /usr/include/python2.7 in paths and symbols
In Omnet++ Makemake options --> link added python2.7

It works...

Thanks SO.

Source https://stackoverflow.com/questions/71013592

QUESTION

pybind11 - Return a shared_ptr of std::vector

Asked 2022-Feb-01 at 00:02

I have a member variable that stores a std::shared_ptr of std::vector. I want to create a Python binding for test_func2() so that I can access that vector without any additional copy. Here is a skeleton code.

...

ANSWER

Answered 2022-Feb-01 at 00:02

According to this issue, it doesn't work because std::vector is not converted to a python type. So, you will have to return the dereferenced vector. To avoid copies, you can use PYBIND11_MAKE_OPAQUE

Source https://stackoverflow.com/questions/70933384

QUESTION

Calling member function through a pointer from Python with pybind11

Asked 2022-Jan-29 at 18:27

I am creating a Python module (module.so) following pybind11's tutorial on trampolines:

...

ANSWER

Answered 2022-Jan-29 at 18:27

Receiving raw pointers usually^* means you don't assume ownership of the object. When you receive IReader* in the constructor of C, pybind11 assumes you will still hold the temporary PklReader() object and keep it alive outside. But you don't, so it gets freed and you get a segfault.

I think

Source https://stackoverflow.com/questions/70901183

QUESTION

Any C++ macro that can export all member variables of a struct for pybind11

Asked 2022-Jan-27 at 09:33

I have a simple structure like:

...

ANSWER

Answered 2021-Dec-08 at 11:27

For number 2 you can try to check out my pod_reflection library:

Source https://stackoverflow.com/questions/70150907

QUESTION

How to call a python function from C++ with pybind11?

Asked 2022-Jan-27 at 07:42

Please consider the following C++ pybind11 program:

...

ANSWER

Answered 2022-Jan-27 at 07:42

So the initial problem (solved in the comments) was that having different globals and locals causes it to be evaluated as if it were in a class (see the Python documentation for exec - the PyBind11 function behaves basically the same):

Remember that at the module level, globals and locals are the same dictionary. If exec gets two separate objects as globals and locals, the code will be executed as if it were embedded in a class definition.

A function scope doesn't look up variables defined in its enclosing class - this wouldn't work

Source https://stackoverflow.com/questions/70846440

QUESTION

pybind11: send MPI communicator from Python to CPP

Asked 2022-Jan-24 at 10:03

I have a C++ class which I intend to call from python's mpi4py interface such that each node spawns the class. On the C++ side, I'm using the Open MPI library (installed via homebrew) and pybind11.

The C++ class is as follows:

...

ANSWER

Answered 2022-Jan-24 at 10:03

Using a void * as an argument compiled successfully for me. It's ABI-compatible with the pybind11 interfaces (an MPI_Comm is a pointer in any case). All I had to change was this:

Source https://stackoverflow.com/questions/70423477

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

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Install pybind11

You can download it from GitHub.

Support

For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

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