Fix Windows debug with python debug (#1991)

Signed-off-by: Cédrik Fuoco <cedrik.fuoco@autodesk.com>

Author: cedrik-fuoco-adsk

CMakeLists.txt

@@ -191,7 +191,7 @@ if(WIN32)
     # Windows debug builds for Python require a d in order for the module to
     # load. This also helps ensure that debug builds in general are matched
     # to the Microsoft debug CRT.
-    set(OTIO_DEBUG_POSTFIX "d")
+    set(OTIO_DEBUG_POSTFIX "_d")
 endif()
 
 set_property(GLOBAL PROPERTY USE_FOLDERS ON)

src/py-opentimelineio/opentimelineio-bindings/otio_utils.cpp

@@ -98,10 +98,13 @@ void _build_any_to_py_dispatch_table() {
     }
 }
 
-static py::object _value_to_any = py::none();
+// Initialized lazily after the interpreter is ready.
+// constructing py::none() at static init time triggers 
+// pybind11 GIL assertions in Debug builds.
+static py::object _value_to_any;
 
 static void py_to_any(py::object const& o, std::any* result) {
-    if (_value_to_any.is_none()) {
+    if (!_value_to_any || _value_to_any.is_none()) {
         py::object core = py::module::import("opentimelineio.core");
         _value_to_any = core.attr("_value_to_any");
     }