I am using some legacy code from python2 that has to work with python3. So far so good, most of the things work as they should. However I get the most vage error from a library called lxml.
In my understanding this is a library that binds to a binary program written in c.
The problem comes from this piece of code:
with etree.xmlfile(self.temp_file, encoding='utf-8') as xf:
with xf.element('{http://www.opengis.net/citygml/2.0}CityModel', nsmap=nsmap):
with open(input_gml, mode='rb') as f:
context = etree.iterparse(f)
for action, elem in context:
if action == 'end' and elem.tag == '{http://www.opengis.net/citygml/2.0}cityObjectMember':
# Duplicate feature and subfeatures
self.duplicateFeature(xf, elem)
# Clean up the original element and the node of its previous sibling
# (https://www.ibm.com/developerworks/xml/library/x-hiperfparse/)
elem.clear()
while elem.getprevious() is not None:
del elem.getparent()[0]
del context
xf.flush()
It processes this xml file. And gets the following error:
Traceback (most recent call last):
File "/usr/local/bin/stetl", line 4, in <module>
__import__('pkg_resources').run_script('Stetl==2.0', 'stetl')
File "/usr/local/lib/python3.6/site-packages/pkg_resources/__init__.py", line 666, in run_script
self.require(requires)[0].run_script(script_name, ns)
File "/usr/local/lib/python3.6/site-packages/pkg_resources/__init__.py", line 1446, in run_script
exec(code, namespace, namespace)
File "/usr/local/lib/python3.6/site-packages/Stetl-2.0-py3.6.egg/EGG-INFO/scripts/stetl", line 43, in <module>
main()
File "/usr/local/lib/python3.6/site-packages/Stetl-2.0-py3.6.egg/EGG-INFO/scripts/stetl", line 36, in main
etl.run()
File "/usr/local/lib/python3.6/site-packages/Stetl-2.0-py3.6.egg/stetl/etl.py", line 157, in run
chain.run()
File "/usr/local/lib/python3.6/site-packages/Stetl-2.0-py3.6.egg/stetl/chain.py", line 172, in run
packet = self.first_comp.process(packet)
File "/usr/local/lib/python3.6/site-packages/Stetl-2.0-py3.6.egg/stetl/component.py", line 213, in process
packet = self.next.process(packet)
File "/usr/local/lib/python3.6/site-packages/Stetl-2.0-py3.6.egg/stetl/component.py", line 213, in process
packet = self.next.process(packet)
File "/usr/local/lib/python3.6/site-packages/Stetl-2.0-py3.6.egg/stetl/component.py", line 213, in process
packet = self.next.process(packet)
File "/usr/local/lib/python3.6/site-packages/Stetl-2.0-py3.6.egg/stetl/component.py", line 199, in process
packet = self.invoke(packet)
File "/app/bgt/etl/stetlbgt/subfeaturehandler.py", line 144, in invoke
del context
File "src/lxml/serializer.pxi", line 925, in lxml.etree.xmlfile.__exit__
File "src/lxml/serializer.pxi", line 1263, in lxml.etree._IncrementalFileWriter._close
File "src/lxml/serializer.pxi", line 1269, in lxml.etree._IncrementalFileWriter._handle_error
File "src/lxml/serializer.pxi", line 199, in lxml.etree._raiseSerialisationError
lxml.etree.SerialisationError: unknown error -2029930774
I'm not sure what's going wrong here. It seems that something is wrong with some weird encoded character.
How to debug this?
