Metadata-Version: 2.1
Name: pybind11
Version: 2.6.0rc3
Summary: Seamless operability between C++11 and Python
Home-page: https://github.com/pybind/pybind11
Author: Wenzel Jakob
Author-email: wenzel.jakob@epfl.ch
License: BSD
Download-URL: https://github.com/pybind/pybind11/tarball/v2.6.0rc3
Description: .. figure:: https://github.com/pybind/pybind11/raw/master/docs/pybind11-logo.png
           :alt: pybind11 logo
        
        pybind11 — Seamless operability between C++11 and Python
        ========================================================
        
        |Latest Documentation Status| |Stable Documentation Status| |Gitter chat| |CI| |Build status|
        
        .. warning::
        
           Combining older versions of pybind11 (< 2.6.0) with the brand-new Python
           3.9.0 will trigger undefined behavior that typically manifests as crashes
           during interpreter shutdown (but could also destroy your data. **You have been
           warned.**)
        
           We recommend that you wait for Python 3.9.1 slated for release in December,
           which will include a `fix <https://github.com/python/cpython/pull/22670>`_
           that resolves this problem.  In the meantime, please update to the latest
           version of pybind11 (2.6.0 or newer), which includes a temporary workaround
           specifically when Python 3.9.0 is detected at runtime.
        
        **pybind11** is a lightweight header-only library that exposes C++ types
        in Python and vice versa, mainly to create Python bindings of existing
        C++ code. Its goals and syntax are similar to the excellent
        `Boost.Python <http://www.boost.org/doc/libs/1_58_0/libs/python/doc/>`_
        library by David Abrahams: to minimize boilerplate code in traditional
        extension modules by inferring type information using compile-time
        introspection.
        
        The main issue with Boost.Python—and the reason for creating such a
        similar project—is Boost. Boost is an enormously large and complex suite
        of utility libraries that works with almost every C++ compiler in
        existence. This compatibility has its cost: arcane template tricks and
        workarounds are necessary to support the oldest and buggiest of compiler
        specimens. Now that C++11-compatible compilers are widely available,
        this heavy machinery has become an excessively large and unnecessary
        dependency.
        
        Think of this library as a tiny self-contained version of Boost.Python
        with everything stripped away that isn’t relevant for binding
        generation. Without comments, the core header files only require ~4K
        lines of code and depend on Python (2.7 or 3.5+, or PyPy) and the C++
        standard library. This compact implementation was possible thanks to
        some of the new C++11 language features (specifically: tuples, lambda
        functions and variadic templates). Since its creation, this library has
        grown beyond Boost.Python in many ways, leading to dramatically simpler
        binding code in many common situations.
        
        Tutorial and reference documentation is provided at
        `pybind11.readthedocs.io <https://pybind11.readthedocs.io/en/latest>`_.
        A PDF version of the manual is available
        `here <https://media.readthedocs.org/pdf/pybind11/master/pybind11.pdf>`_.
        And the source code is always available at
        `github.com/pybind/pybind11 <https://github.com/pybind/pybind11>`_.
        
        Core features
        -------------
        
        pybind11 can map the following core C++ features to Python:
        
        -  Functions accepting and returning custom data structures per value,
           reference, or pointer
        -  Instance methods and static methods
        -  Overloaded functions
        -  Instance attributes and static attributes
        -  Arbitrary exception types
        -  Enumerations
        -  Callbacks
        -  Iterators and ranges
        -  Custom operators
        -  Single and multiple inheritance
        -  STL data structures
        -  Smart pointers with reference counting like ``std::shared_ptr``
        -  Internal references with correct reference counting
        -  C++ classes with virtual (and pure virtual) methods can be extended
           in Python
        
        Goodies
        -------
        
        In addition to the core functionality, pybind11 provides some extra
        goodies:
        
        -  Python 2.7, 3.5+, and PyPy/PyPy3 7.3 are supported with an
           implementation-agnostic interface.
        
        -  It is possible to bind C++11 lambda functions with captured
           variables. The lambda capture data is stored inside the resulting
           Python function object.
        
        -  pybind11 uses C++11 move constructors and move assignment operators
           whenever possible to efficiently transfer custom data types.
        
        -  It’s easy to expose the internal storage of custom data types through
           Pythons’ buffer protocols. This is handy e.g. for fast conversion
           between C++ matrix classes like Eigen and NumPy without expensive
           copy operations.
        
        -  pybind11 can automatically vectorize functions so that they are
           transparently applied to all entries of one or more NumPy array
           arguments.
        
        -  Python’s slice-based access and assignment operations can be
           supported with just a few lines of code.
        
        -  Everything is contained in just a few header files; there is no need
           to link against any additional libraries.
        
        -  Binaries are generally smaller by a factor of at least 2 compared to
           equivalent bindings generated by Boost.Python. A recent pybind11
           conversion of PyRosetta, an enormous Boost.Python binding project,
           `reported <http://graylab.jhu.edu/RosettaCon2016/PyRosetta-4.pdf>`_
           a binary size reduction of **5.4x** and compile time reduction by
           **5.8x**.
        
        -  Function signatures are precomputed at compile time (using
           ``constexpr``), leading to smaller binaries.
        
        -  With little extra effort, C++ types can be pickled and unpickled
           similar to regular Python objects.
        
        Supported compilers
        -------------------
        
        1. Clang/LLVM 3.3 or newer (for Apple Xcode’s clang, this is 5.0.0 or
           newer)
        2. GCC 4.8 or newer
        3. Microsoft Visual Studio 2015 Update 3 or newer
        4. Intel C++ compiler 18 or newer
           (`possible issue <https://github.com/pybind/pybind11/pull/2573>`_) on 20.2)
        5. Cygwin/GCC (tested on 2.5.1)
        6. NVCC (CUDA 11.0 tested)
        7. NVIDIA PGI (20.7 and 20.9 tested)
        
        About
        -----
        
        This project was created by `Wenzel
        Jakob <http://rgl.epfl.ch/people/wjakob>`_. Significant features and/or
        improvements to the code were contributed by Jonas Adler, Lori A. Burns,
        Sylvain Corlay, Trent Houliston, Axel Huebl, @hulucc, Sergey Lyskov
        Johan Mabille, Tomasz Miąsko, Dean Moldovan, Ben Pritchard, Jason
        Rhinelander, Boris Schäling, Pim Schellart, Henry Schreiner, Ivan
        Smirnov, and Patrick Stewart.
        
        Contributing
        ~~~~~~~~~~~~
        
        See the `contributing
        guide <https://github.com/pybind/pybind11/blob/master/.github/CONTRIBUTING.md>`_
        for information on building and contributing to pybind11.
        
        License
        ~~~~~~~
        
        pybind11 is provided under a BSD-style license that can be found in the
        `LICENSE <https://github.com/pybind/pybind11/blob/master/LICENSE>`_
        file. By using, distributing, or contributing to this project, you agree
        to the terms and conditions of this license.
        
        .. |Latest Documentation Status| image:: https://readthedocs.org/projects/pybind11/badge?version=latest
           :target: http://pybind11.readthedocs.org/en/latest
        .. |Stable Documentation Status| image:: https://img.shields.io/badge/docs-stable-blue
           :target: http://pybind11.readthedocs.org/en/stable
        .. |Gitter chat| image:: https://img.shields.io/gitter/room/gitterHQ/gitter.svg
           :target: https://gitter.im/pybind/Lobby
        .. |CI| image:: https://github.com/pybind/pybind11/workflows/CI/badge.svg
           :target: https://github.com/pybind/pybind11/actions
        .. |Build status| image:: https://ci.appveyor.com/api/projects/status/riaj54pn4h08xy40?svg=true
           :target: https://ci.appveyor.com/project/wjakob/pybind11
        
Keywords: C++11,Python bindings
Platform: UNKNOWN
Classifier: Development Status :: 5 - Production/Stable
Classifier: Intended Audience :: Developers
Classifier: Topic :: Software Development :: Libraries :: Python Modules
Classifier: Topic :: Utilities
Classifier: Programming Language :: C++
Classifier: Programming Language :: Python :: 2.7
Classifier: Programming Language :: Python :: 3
Classifier: Programming Language :: Python :: 3.5
Classifier: Programming Language :: Python :: 3.6
Classifier: Programming Language :: Python :: 3.7
Classifier: Programming Language :: Python :: 3.8
Classifier: License :: OSI Approved :: BSD License
Classifier: Programming Language :: Python :: Implementation :: PyPy
Classifier: Programming Language :: Python :: Implementation :: CPython
Classifier: Programming Language :: C++
Classifier: Topic :: Software Development :: Libraries :: Python Modules
Requires-Python: !=3.0,!=3.1,!=3.2,!=3.3,!=3.4,>=2.7
Description-Content-Type: text/x-rst
Provides-Extra: global
