<div dir="ltr"><div>Dear<span class="gmail_default" style="font-size:small"> </span>Pietro D<span class="gmail_default" style="font-size:small">.</span> Delugas<span class="gmail_default" style="font-size:small">,</span></div><div><span class="gmail_default" style="font-size:small"><br></span></div><div><span class="gmail_default" style="font-size:small">Thank you for your reply. It is quite helpful (I wrote a small parser for getting atomic positions etc, but the mentioned implementation is very extensive and should be used). <br></span></div><div><span class="gmail_default" style="font-size:small"><br></span></div><div style="font-size:small" class="gmail_default">Regarding the error (maybe, it is a stupid mistake): I was testing the examples in  "qeschema-master/tests" using "test_qeschema.py", where I got the following error: <br></div><div style="font-size:small" class="gmail_default">----------------------------------------------------------------------------------------------------------------------------------------------------<br></div><div style="font-size:small" class="gmail_default">Traceback (most recent call last):<br>  File "test_qeschema.py", line 79, in <module><br>    import qeschema<br>  File "~/.local/lib/python3.6/site-packages/qeschema-0.5.0-py3.6.egg/qeschema/__init__.py", line 13, in <module><br>    from .documents import QeDocument, PwDocument, PhononDocument, NebDocument, TdDocument, SpectrumDocument<br>  File "~/.local/lib/python3.6/site-packages/qeschema-0.5.0-py3.6.egg/qeschema/documents.py", line 13, in <module><br>    import xmlschema<br>  File "~/.local/lib/python3.6/site-packages/xmlschema-0.9.30-py3.6.egg/xmlschema/__init__.py", line 18, in <module><br>    from .validators.exceptions import (<br>  File "~/.local/lib/python3.6/site-packages/xmlschema-0.9.30-py3.6.egg/xmlschema/validators/__init__.py", line 15, in <module><br>    from .constraints import XsdSelector, XsdFieldSelector, XsdConstraint, XsdKeyref, XsdKey, XsdUnique<br>  File "~/.local/lib/python3.6/site-packages/xmlschema-0.9.30-py3.6.egg/xmlschema/validators/constraints.py", line 40, in <module><br>    XsdConstraintXPathParser.end()<br>AttributeError: type object 'XsdConstraintXPathParser' has no attribute 'end'<br></div><div style="font-size:small" class="gmail_default">----------------------------------------------------------------------------------------------------------------------------------------------------</div><div><div style="font-size:small" class="gmail_default"></div><br></div><div><div style="font-size:small" class="gmail_default">bests,</div><div style="font-size:small" class="gmail_default">S. Kumar<br></div><div style="font-size:small" class="gmail_default"></div><br></div><div style="font-size:small" class="gmail_default"><br></div><div style="font-size:small" class="gmail_default"><br></div><div style="font-size:small" class="gmail_default"><br></div></div>