Fix type hintings in the Python wheel.

Author: bcoconni

.github/workflows/cpp-python-build.yml

@@ -497,7 +497,7 @@ jobs:
         run: ctest --parallel $(sysctl -n hw.logicalcpu) --output-on-failure
       - name: Build the source package for Python
         run: |
-          python python/pyxstubgen.py --pyxfile=build/python/_jsbsim.pyx --output=python/_jsbsim.pyi
+          python python/pyxstubgen.py --pyxfile=build/python/_jsbsim.pyx --output=python/__init__.pyi
           cp build/python/pyproject.toml .
           python -m build --sdist
       - name: Check reset for real time execution

python/__init__.py

@@ -1,4 +1,3 @@
-from . import _jsbsim
 from ._jsbsim import (
     __version__,
     Attribute,

python/jsbsim.pyx.in

@@ -270,7 +270,7 @@ cdef class FGPropertyNode:
         self.__intercept_invalid_pointer()
         return GetFullyQualifiedName(self.thisptr.ptr()).decode()
 
-    def get_node(self, path: str, create: bool = False) -> Optional[SGPropertyNode]:
+    def get_node(self, path: str, create: bool = False) -> Optional[FGPropertyNode]:
         """Get a pointer to another node by relative path.
 
            :param path: The relative path from the node.
@@ -325,7 +325,7 @@ cdef class FGPropertyManager:
         if not self.thisptr:
             raise MemoryError()
 
-    def get_node(self, path: Optional[str] = None, create: bool = False) -> Optional[SGPropertyNode]:
+    def get_node(self, path: Optional[str] = None, create: bool = False) -> Optional[FGPropertyNode]:
         """@Dox(JSBSim::FGPropertyManager::GetNode)"""
         node = FGPropertyNode()
         if path is None: