tree 463bc799fc770422568b3d70deba3a031b99792b
parent 03f9e4a8ec10eaab2181da7ec7d629f0dce74c30
author Jason Rhinelander <jason@imaginary.ca> 1514069767 -0400
committer Wenzel Jakob <wenzel.jakob@epfl.ch> 1587917271 +0200

Support keyword-only arguments

This adds support for a `py::args_kw_only()` annotation that can be
specified between `py::arg` annotations to indicate that any following
arguments are keyword-only.  This allows you to write:

    m.def("f", [](int a, int b) { /* ... */ },
          py::arg("a"), py::args_kw_only(), py::arg("b"));

and have it work like Python 3's:

    def f(a, *, b):
        # ...

with respect to how `a` and `b` arguments are accepted (that is, `a` can
be positional or by keyword; `b` can only be specified by keyword).