MultiFab: Allow Dynamic Attributes (#500)

ax3l · web-flow · commit f56da4a68868 · 2025-11-04T15:02:43.000-08:00
Allow to add attributes dynamically to the `MultiFab` type. Needed for: BLAST-WarpX/warpx#6344 Background: https://pybind11.readthedocs.io/en/stable/classes.html#dynamic-attributes
diff --git a/src/Base/MultiFab.cpp b/src/Base/MultiFab.cpp
@@ -20,7 +20,7 @@ void init_MultiFab(py::module &m, py::class_< amrex::MFIter > & py_MFIter)
 {
     using namespace amrex;
 
-    py::class_< MultiFab, FabArray<FArrayBox> > py_MultiFab(m, "MultiFab");
+    py::class_< MultiFab, FabArray<FArrayBox> > py_MultiFab(m, "MultiFab", py::dynamic_attr());
 
     py_MFIter
         .def("__repr__",

Original file line number	Diff line number	Diff line change
`@@ -20,7 +20,7 @@ void init_MultiFab(py::module &m, py::class_< amrex::MFIter > & py_MFIter)`
`20`	`20`	`{`
`21`	`21`	`using namespace amrex;`
`22`	`22`
`23`		`- py::class_< MultiFab, FabArray<FArrayBox> > py_MultiFab(m, "MultiFab");`
	`23`	`+ py::class_< MultiFab, FabArray<FArrayBox> > py_MultiFab(m, "MultiFab", py::dynamic_attr());`
`24`	`24`
`25`	`25`	`py_MFIter`
`26`	`26`	`.def("__repr__",`