Python version 2.7: XML ElementTree: How to iterate through certain elements of a child element in order to find a match

Question

I\'m a programming novice and only rarely use python so please bear with me as I try to explain what I am trying to do :)

I have the following XML:

&         


        

Answer 1

This is untested by it should be fairly close to what you want.

for patient in root:
    patient_code =  patient.find('PatientCharacteristics').find('patientCode')
    if patient_code.text == code:
            for visit in patient.find('Visits'):
                    visit_date = visit.find('VisitDate')
                    if visit_date.text == date:
                        swol28 = visit.find('DAS').find('Joints').find('SWOL28')
                        if swol28.text:
                            visit.find('DAS').find('Joints').set('SWOL28', new_swol28)