birdnotes.py: Objects to represent bird note files

Translate the instance back to XML.

# - - -   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