Porting CESM2,ERROR:xml.etree.ElementTree.ParseError: unbound prefix

[CGL]

I wanna to port the CESM2 to the machine. I revised the config_machine.xml,config_batch.xml and config_compilers.xml.
When i try to create new case, Error was reported.
Traceback (most recent call last): File "./create_newcase", line 243, in <module> _main_func(__doc__) File "./create_newcase", line 238, in _main_func extra_machines_dir=extra_machines_dir) File "/data/sxh/CESM2/CESM/cesm2/cime/scripts/Tools/../../scripts/lib/CIME/case/case.py", line 1644, in create extra_machines_dir=extra_machines_dir) File "/data/sxh/CESM2/CESM/cesm2/cime/scripts/Tools/../../scripts/lib/CIME/case/case.py", line 963, in configure machobj = Machines(machine=machine_name, extra_machines_dir=extra_machines_dir) File "/data/sxh/CESM2/CESM/cesm2/cime/scripts/Tools/../../scripts/lib/CIME/XML/machines.py", line 43, in __init__ GenericXML.__init__(self, infile, schema) File "/data/sxh/CESM2/CESM/cesm2/cime/scripts/Tools/../../scripts/lib/CIME/XML/generic_xml.py", line 64, in __init__ self.read(infile, schema) File "/data/sxh/CESM2/CESM/cesm2/cime/scripts/Tools/../../scripts/lib/CIME/XML/generic_xml.py", line 102, in read self.read_fd(fd) File "/data/sxh/CESM2/CESM/cesm2/cime/scripts/Tools/../../scripts/lib/CIME/XML/generic_xml.py", line 126, in read_fd self.tree = ET.parse(fd) File "/usr/lib64/python2.7/xml/etree/ElementTree.py", line 1182, in parse tree.parse(source, parser) File "/usr/lib64/python2.7/xml/etree/ElementTree.py", line 656, in parse parser.feed(data) File "/usr/lib64/python2.7/xml/etree/ElementTree.py", line 1642, in feed self._raiseerror(v) File "/usr/lib64/python2.7/xml/etree/ElementTree.py", line 1506, in _raiseerror raise err xml.etree.ElementTree.ParseError: unbound prefix: line 73, column 4
How can i fix it? I feel maybe python version not match the CESM2. Current python version is 2.7.

 

[erik]

You will need a newer version of python for CESM2. I'm not sure if that's the error you are getting above, but I do recommend using a newer python version. We use python3.7.9 on cheyenne for example.

The above issue might also indicate a problem in your XML files. I'd suggest using xmllint by hand to see if you have valid XML. You can also use the XSD files under "cime/CIME/data/config/xml_schemas" to see if your XML follows our standards for those specific files.

 

[CGL]

Thanks. The problem is XML file have some wrong spell when i revise some function and definite. It's solved.