test_kwargs_and_defaults.cpp revision 11986
1/* 2 tests/test_kwargs_and_defaults.cpp -- keyword arguments and default values 3 4 Copyright (c) 2016 Wenzel Jakob <wenzel.jakob@epfl.ch> 5 6 All rights reserved. Use of this source code is governed by a 7 BSD-style license that can be found in the LICENSE file. 8*/ 9 10#include "pybind11_tests.h" 11#include <pybind11/stl.h> 12 13std::string kw_func(int x, int y) { return "x=" + std::to_string(x) + ", y=" + std::to_string(y); } 14 15std::string kw_func4(const std::vector<int> &entries) { 16 std::string ret = "{"; 17 for (int i : entries) 18 ret += std::to_string(i) + " "; 19 ret.back() = '}'; 20 return ret; 21} 22 23py::tuple args_function(py::args args) { 24 return args; 25} 26 27py::tuple args_kwargs_function(py::args args, py::kwargs kwargs) { 28 return py::make_tuple(args, kwargs); 29} 30 31struct KWClass { 32 void foo(int, float) {} 33}; 34 35test_initializer arg_keywords_and_defaults([](py::module &m) { 36 m.def("kw_func0", &kw_func); 37 m.def("kw_func1", &kw_func, py::arg("x"), py::arg("y")); 38 m.def("kw_func2", &kw_func, py::arg("x") = 100, py::arg("y") = 200); 39 m.def("kw_func3", [](const char *) { }, py::arg("data") = std::string("Hello world!")); 40 41 /* A fancier default argument */ 42 std::vector<int> list; 43 list.push_back(13); 44 list.push_back(17); 45 m.def("kw_func4", &kw_func4, py::arg("myList") = list); 46 47 m.def("args_function", &args_function); 48 m.def("args_kwargs_function", &args_kwargs_function); 49 50 m.def("kw_func_udl", &kw_func, "x"_a, "y"_a=300); 51 m.def("kw_func_udl_z", &kw_func, "x"_a, "y"_a=0); 52 53 py::class_<KWClass>(m, "KWClass") 54 .def("foo0", &KWClass::foo) 55 .def("foo1", &KWClass::foo, "x"_a, "y"_a); 56}); 57