Trouble with save document

[dmkh1984]

Good day.
I open document (try DXF2018 and DXF2010/2013 formats, works same), delete some entities with paperspace.delete_entity(entity) and try to save document with doc.save() and got broken file and this:
`Traceback (most recent call last):
File "F:\Scipts\Delete\Delete.py", line 35, in
doc.save()
File "C:\Users\PyDev\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0\LocalCache\local-packages\Python39\site-packages\ezdxf\document.py", line 543, in save
self.write(fp, fmt=fmt) # type: ignore
File "C:\Users\PyDev\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0\LocalCache\local-packages\Python39\site-packages\ezdxf\document.py", line 601, in write
self.export_sections(tagwriter)
File "C:\Users\PyDev\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0\LocalCache\local-packages\Python39\site-packages\ezdxf\document.py", line 620, in export_sections
self.entities.export_dxf(tagwriter)
File "C:\Users\PyDev\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0\LocalCache\local-packages\Python39\site-packages\ezdxf\sections\entities.py", line 111, in export_dxf
layouts.modelspace().entity_space.export_dxf(tagwriter)
File "C:\Users\PyDev\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0\LocalCache\local-packages\Python39\site-packages\ezdxf\entitydb.py", line 391, in export_dxf
entity.export_dxf(tagwriter)
File "C:\Users\PyDev\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0\LocalCache\local-packages\Python39\site-packages\ezdxf\entities\dxfentity.py", line 686, in export_dxf
self.export_entity(tagwriter)
File "C:\Users\PyDev\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0\LocalCache\local-packages\Python39\site-packages\ezdxf\entities\ellipse.py", line 126, in export_entity
assert is_valid_ratio(self.dxf.ratio)

AssertionError`

Overall, great package, big thanks.

[mozman]

There exist an ELLIPSE entity in the DXF file which has an invalid ratio. According to my research the ELLIPSE ratio must be in the range of 1e-6 to 1.0, otherwise AutoCAD will not open the DXF file.

• Was the source file created by AutoCAD?
• Can AutoCAD open the source file?
• Can you upload the zipped sample file?

EDIT: the ezdxf.recover module should fix this error (?) at the loading stage

[dmkh1984]

Answers:

• Was the source file created by AutoCAD? - Source of DWG file - my customer. Though I believe this file itself was create from multiply sources (like different people inserted different blocks, and they do it in a lot of different AudoDesk and nonAudoDesk apps)
• Can AutoCAD open the source file? - Yes, Autocad 2018 easily open source file and working like a charm with this file.
• Can you upload the zipped sample file? - Yep, I think I can upload file, but I need it to clean first from some "sensitive" info (I bet my customer will not be happy find out his file on internet)))
• the ezdxf.recover module should fix this error (?) at the loading stage - thanks, I try it (but Autocad itself aren't able to recover file)