example-questionnaireresponse-compare.py

qr_string = """{
  "resourceType": "QuestionnaireResponse",
  "id": "3141",
  "text": {
    "status": "generated",
    "div": "<div xmlns=\"http://www.w3.org/1999/xhtml\">\n      <pre>\n            Comorbidity? YES\n              Cardial Comorbidity? YES\n                Angina? YES\n                MI? NO\n              Vascular Comorbidity?\n                (no answers)\n              ...\n            Histopathology\n              Abdominal\n                pT category: 1a\n              ...\n          </pre>\n    </div>"
  },
  "contained": [
    {
      "resourceType": "Patient",
      "id": "patsub",
      "identifier": [
        {
          "system": "http://cancer.questionnaire.org/systems/id/patientnr",
          "value": "A34442332"
        },
        {
          "type": {
            "text": "Dutch BSN"
          },
          "system": "urn:oid:2.16.840.1.113883.2.4.6.3",
          "value": "188912345"
        }
      ],
      "gender": "male",
      "birthDate": "1972-11-30"
    },
    {
      "resourceType": "ServiceRequest",
      "id": "order",
      "status": "unknown",
      "intent": "order",
      "subject": {
        "reference": "#patsub"
      },
      "requester": {
        "reference": "Practitioner/example"
      }
    },
    {
      "resourceType": "Practitioner",
      "id": "questauth",
      "identifier": [
        {
          "type": {
            "text": "AUMC, Den Helder"
          },
          "system": "http://cancer.questionnaire.org/systems/id/org",
          "value": "AUMC"
        }
      ]
    }
  ],
  "identifier": {
    "system": "http://example.org/fhir/NamingSystem/questionnaire-ids",
    "value": "Q12349876"
  },
  "basedOn": [
    {
      "reference": "#order"
    }
  ],
  "partOf": [
    {
      "reference": "Procedure/f201"
    }
  ],
  "status": "completed",
  "subject": {
    "reference": "#patsub"
  },
  "encounter": {
    "reference": "Encounter/example"
  },
  "authored": "2013-02-19T14:15:00-05:00",
  "author": {
    "reference": "#questauth"
  },
  "item": [
    {
      "linkId": "1",
      "item": [
        {
          "linkId": "1.1",
          "answer": [
            {
              "valueCoding": {
                "system": "http://cancer.questionnaire.org/system/code/yesno",
                "code": "1",
                "display": "Yes"
              },
              "item": [
                {
                  "linkId": "1.1.1",
                  "item": [
                    {
                      "linkId": "1.1.1.1",
                      "answer": [
                        {
                          "valueCoding": {
                            "system": "http://cancer.questionnaire.org/system/code/yesno",
                            "code": "1"
                          }
                        }
                      ]
                    },
                    {
                      "linkId": "1.1.1.2",
                      "answer": [
                        {
                          "valueCoding": {
                            "system": "http://cancer.questionnaire.org/system/code/yesno",
                            "code": "1"
                          }
                        }
                      ]
                    },
                    {
                      "linkId": "1.1.1.3",
                      "answer": [
                        {
                          "valueCoding": {
                            "system": "http://cancer.questionnaire.org/system/code/yesno",
                            "code": "0"
                          }
                        }
                      ]
                    }
                  ]
                }
              ]
            }
          ]
        }
      ]
    }
  ]
}
"""
# if FHIR version R4
from fhir.resources import construct_fhir_element
# if FHIR version STU3
# from fhir.resources.STU3 import construct_fhir_element
import datetime


questionnaire_obj = construct_fhir_element("QuestionnaireResponse", qr_string)

for item in questionnaire_obj.item:
    linkid = item.linkId
    if item.item:
        for itm in item.item:
            # check certain question ref
            if itm.linkId == "Foo LinkID":
                if itm.answer is None:
                    # do your action
                    pass
                elif itm.answer[0].valueCoding and itm.answer[0].valueCoding.code == "0":
                    # do action
                    pass
                elif itm.answer[0].valueDateTime and itm.answer[0].valueDateTime > datetime.datetime.now():
                    # do action
                    pass