LSST Applications  21.0.0-172-gfb10e10a+18fedfabac,22.0.0+297cba6710,22.0.0+80564b0ff1,22.0.0+8d77f4f51a,22.0.0+a28f4c53b1,22.0.0+dcf3732eb2,22.0.1-1-g7d6de66+2a20fdde0d,22.0.1-1-g8e32f31+297cba6710,22.0.1-1-geca5380+7fa3b7d9b6,22.0.1-12-g44dc1dc+2a20fdde0d,22.0.1-15-g6a90155+515f58c32b,22.0.1-16-g9282f48+790f5f2caa,22.0.1-2-g92698f7+dcf3732eb2,22.0.1-2-ga9b0f51+7fa3b7d9b6,22.0.1-2-gd1925c9+bf4f0e694f,22.0.1-24-g1ad7a390+a9625a72a8,22.0.1-25-g5bf6245+3ad8ecd50b,22.0.1-25-gb120d7b+8b5510f75f,22.0.1-27-g97737f7+2a20fdde0d,22.0.1-32-gf62ce7b1+aa4237961e,22.0.1-4-g0b3f228+2a20fdde0d,22.0.1-4-g243d05b+871c1b8305,22.0.1-4-g3a563be+32dcf1063f,22.0.1-4-g44f2e3d+9e4ab0f4fa,22.0.1-42-gca6935d93+ba5e5ca3eb,22.0.1-5-g15c806e+85460ae5f3,22.0.1-5-g58711c4+611d128589,22.0.1-5-g75bb458+99c117b92f,22.0.1-6-g1c63a23+7fa3b7d9b6,22.0.1-6-g50866e6+84ff5a128b,22.0.1-6-g8d3140d+720564cf76,22.0.1-6-gd805d02+cc5644f571,22.0.1-8-ge5750ce+85460ae5f3,master-g6e05de7fdc+babf819c66,master-g99da0e417a+8d77f4f51a,w.2021.48
LSST Data Management Base Package
cppimport.cc
Go to the documentation of this file.
1 /*
2  * LSST Data Management System
3  * Copyright 2008-2016 AURA/LSST.
4  *
5  * This product includes software developed by the
6  * LSST Project (http://www.lsst.org/).
7  *
8  * This program is free software: you can redistribute it and/or modify
9  * it under the terms of the GNU General Public License as published by
10  * the Free Software Foundation, either version 3 of the License, or
11  * (at your option) any later version.
12  *
13  * This program is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16  * GNU General Public License for more details.
17  *
18  * You should have received a copy of the LSST License Statement and
19  * the GNU General Public License along with this program. If not,
20  * see <https://www.lsstcorp.org/LegalNotices/>.
21  */
22 
23 #include "pybind11/pybind11.h"
24 
26 
27 namespace py = pybind11;
28 
29 namespace lsst {
30 namespace base {
31 
33 public:
34  static ModuleImporter const* get() {
35  static PythonModuleImporter const instance;
36  return &instance;
37  }
38 
39 private:
41 
42 protected:
43  virtual bool _import(std::string const& name) const;
44 };
45 
47  PyObject* mod = PyImport_ImportModule(name.c_str());
48  if (mod) {
49  Py_DECREF(mod);
50  return true;
51  } else {
52  // If the Python C API call returned a null pointer, it will
53  // also have set an exception. We don't want that, because
54  // this isn't necessarily an error (that's up to the caller).
55  PyErr_Clear();
56  }
57  return false;
58 }
59 
60 void installPythonModuleImporter() { ModuleImporter::install(PythonModuleImporter::get()); }
61 
62 PYBIND11_MODULE(cppimport, mod) {
64 }
65 
66 }
67 } // namespace lsst::base
table::Key< std::string > name
Definition: Amplifier.cc:116
Mechanism for safely importing Python modules from C++; should not be included except by its own impl...
Base class that defines an interface for importing Python modules.
virtual bool _import(std::string const &name) const
Definition: cppimport.cc:46
static ModuleImporter const * get()
Definition: cppimport.cc:34
void installPythonModuleImporter()
Definition: cppimport.cc:60
PYBIND11_MODULE(cppimport, mod)
Definition: cppimport.cc:62
A base class for image defects.