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Some geometry extensions do not provide a PyObject as they do not have a Python counterpart
as it would serve no purpose to have it.
This commit handles this situation making sure to provide the right error to Python
or to ignore the extension where appropriate.
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This commits removes the Geometry construction data member and adapts sketcher code to use
GeometryFacade to access construction information via the SketchGeometryExtension.
When using gcc 10 and PyCXX 7.1.4 on Fedora there is an error because the conversion from size_t to Py_ssize_t is ambiguous
See https://forum.freecadweb.org/viewtopic.php?f=4&t=52502
The class Py::Tuple is also incorrectly used here and causes a memory leak
Found via `codespell -q 3 -I ../fc-word-whitelist.txt -S ./.git,*.po,*.ts,./ChangeLog.txt,./src/3rdParty,./src/Mod/Assembly/App/opendcm,./src/CXX,./src/zipios++,./src/Base/swig*,./src/Mod/Robot/App/kdl_cp,./src/Mod/Import/App/SCL,./src/WindowsInstaller`
inherit Base.FreeCADError form RuntimeError
inherit Part.OCCError from Base.FreeCADError
inherit OCCDomainError from Part.OCCError
inherit OCCRangeError from Part.OCCError
inherit OCCConstructionError from OCCDomainError
inherit OCCDimensionError from OCCDomainError
Added PY_CATCH_OCC macro
replace PyExc_Exception
use FreeCADError in makeWireString
catch exception in BSplineCurve.increasedegree
