converting json to xml

[pasi12]

HI,
I am new to python and learning , need help converting json file to xml . I have below code ( found on web ) modified a bit but is not parsing the whole file only few lines: 
appreciate any help!
Thanks!
Output:

Output:
<Core>
<case_id>
CASE_17BC95
</case_id>
<case_id>
CASE_17D59E
</case_id>
</Core>t]
Process finished with exit code 0

here is the code:

import json

def json2xml(json_obj, Line_spacing=""):
   result_list = list()
   json_obj_type = type(json_obj)

   if json_obj_type is list:
       for sub_elem in json_obj:
           result_list.append(json2xml(sub_elem, Line_spacing))

       return "\n".join(result_list)
   if json_obj_type is dict:
       for tag_name in json_obj:
           sub_obj = json_obj[tag_name]
           result_list.append("%s<%s>" % (Line_spacing, tag_name))
           result_list.append(json2xml(sub_obj, "\t" + Line_spacing))
           result_list.append("%s</%s>" % (Line_spacing, tag_name))
           # print(result_list)
           return "\n".join(result_list)
   return "%s%s" % (Line_spacing, json_obj)

with open ("C://Users//test//Documents//json2.txt") as s:
data = json.load(s)
print(json2xml(data))