Saxon » SaxonC

From the documentation and some examples (although there the XdmValue seems a sequence of nodes) I take it that with SaxonC and Python you should be able to use the Python for .. in loop on an PyXdmValue.

But while I can do that for a sequence of nodes with e.g.

from saxonc import *

with PySaxonProcessor(license=False) as proc:
    print("Test SaxonC on Python")
    print(proc.version)

    xpath_processor = proc.new_xpath_processor()

    result = xpath_processor.evaluate('(1 to 5) ! parse-xml("<item>item " || . || "</item>")')

    if result is None and xpath_processor.exception_occurred:
        print(xpath_processor.error_message)

    print(isinstance(result, PyXdmValue))
    
    print(result)
    
    for item in result:
        print(isinstance(item, PyXdmItem))
        print(isinstance(item, PyXdmNode))
        print(item)

the same with a sequence of maps fails:

Test SaxonC on Python
SaxonC-HE 11.2 from Saxonica
True
map{"value":1}
map{"value":2}
map{"value":3}
map{"value":4}
map{"value":5}
True
False
Traceback (most recent call last):
  File "C:\Users\marti\SomePath\arrays-and-maps\returnSequenceOfXdmMapsFromXPathTest2.py", line 21, in <module>
    print(item)
TypeError: __str__ returned non-string (type NoneType)

Sample:

from saxonc import *

with PySaxonProcessor(license=False) as proc:
    print("Test SaxonC on Python")
    print(proc.version)

    xpath_processor = proc.new_xpath_processor()

    result = xpath_processor.evaluate('(1 to 5) ! map { "value" : . }')

    if result is None and xpath_processor.exception_occurred:
        print(xpath_processor.error_message)

    print(isinstance(result, PyXdmValue))
    
    print(result)
    
    for item in result:
        print(isinstance(item, PyXdmItem))
        print(isinstance(item, PyXdmMap))
        print(item)