当试图返回包含IfcOpenShell对象及其相应形状的字典时，IfcOpenShell:Segfault

Question

im试图从ifc文件中提取所有IfcProduct形状，并将它们(及其相应的Product(返回到程序的另一部分。问题是，当我试图返回一个包含这些对象及其相应形状的字典时，程序会以分段错误退出。在调试时，我看到数据保存在数据结构中，但在返回后或尝试访问此dict中包含的数据时，调试器会以segfault退出。

我通过conda安装了ifcopenshell，它在ubuntu docker vm中运行。

这是我试图运行的代码：

def create_shapes_from_ifcopenshell_object(ifcopenshell_object) -> dict:
"""Creates a shape from the given IfcOpenShell Object and returns a dictionary containing the GlobalId as the key
and the product and shape as dictionary."""
try:
print("Creating shape-objects from IfcProducts.")
settings = ifcopenshell.geom.settings()
products = ifcopenshell_object
product_shapes_dict = {}
for product in products:
if product.is_a("IfcOpeningElement") or product.is_a("IfcSite") or product.is_a("IfcAnnotation"):
continue
if product.Representation is not None:
try:
shape = ifcopenshell.geom.create_shape(settings, product).geometry
except Exception as e:
print(str(e) + ". Product:" + str(product))
continue
shape_entry = {"guid": product.GlobalId,
"product": product,
"shape": shape}
product_shapes_dict[shape_entry["guid"]] = shape_entry
except RuntimeError as re:
print("Runtime error" + str(re))
return {"ERROR": str(e)}
except Exception as e:
print("ERROR during shape creation.")
return {"ERROR": str(e)}
# pprint(product_shapes_dict) <-- THIS SHOWS THE CORRECT DICT
return product_shapes_dict # <-- Segfault directly after this

Answer 1

通过将shape_entry字典中的产品解析为字符串，修复了代码中的问题。

shape_entry = {"guid": product.GlobalId,
"product": str(product),
"shape": shape}