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Translate the instance back to XML. The way the .long flag works is different from the rest of
the attributes: in anticipation of later direct editing
of the XML, we add a newline to the parent node's text
content so that it will use paired tags “<form>...</form>” so that is
easier to add other child content.
# - - - A g e S e x G r o u p . w r i t e N o d e
def writeNode(self, parent):
"""Translate self to XML.
"""
#-- 1 --
# [ if self.age is true ->
# parent := parent with an rnc.AGE_A attribute (self.age)
# else -> I ]
if self.age:
parent.attrib[rnc.AGE_A] = self.age
#-- 2 --
# [ simile ]
if self.sex:
parent.attrib[rnc.SEX_A] = self.sex
#-- 3 --
if self.q:
parent.attrib[rnc.Q_A] = self.q
#-- 4 --
if self.count:
parent.attrib[rnc.COUNT_A] = self.count
#-- 5 --
if self.fide:
parent.attrib[rnc.FIDE_A] = self.fide
The “long flag” inserts a newline and four spaces as the text of the parent node. This will produce output that looks like this:
<form ab6='...'>
</form>
#-- 6 --
if self.long:
parent.text = (parent.text or '') + '\n '