Python Mutli-Language XMLs as string resources

I want to implement language XML into my project and change all hard-code strings into language.xml references based on the way Android uses string resources. (I have not found anything that does this)

en_gb.xml:

<resource>
  <section1>
    <string name="hello">Hello</string>
    <string name="bye">Goodbye</string>
  </section1>
  <section2>
    <string name="world">World</string>
    <string name="end">!</string>
  </section2>
</resource>

jp_tr.xml

<resource>
  <section1>
    <string name="hello">こんにちは</string>
    <string name="bye">さようなら</string>
  </section1>
  <section2>
    <string name="world">世界</string>
    <string name="end">!</string>
  </section2>
</resource>

Not using this anymore See Edit-> now using ElementTree and exec() i can build classes based on these files

class en_gb:
    tr = ET.parse(r'.\assets\local\en_gb.xml')
    for rs in tr.getroot():
        exec(f'class {rs.tag}:pass')
        for c in rs:
            exec(f'{rs.tag}.{c.attrib["name"]}=str("{c.text}")')

This creates a structure as 'lang.section.strname' which i can then use in code

from localization import en_gb, jp_tr
lang = en_gb
print(lang.section1.hello) #> Hello
lang = jp_tr
print(lang.section2.world) #> 世界

Now i want to programically create all the base classes to automatically create the structure. However i cannot find a method to add a class to another class programically and construct it in the same way.

import xml.etree.ElementTree as ET
import os
from pathlib import Path
for lang in os.listdir('.\\assets\local\\'):
    lang = Path(language).stem
    exec(f'class {lang}:pass')
    for rs in ET.parse(fr'.\assets\local\{lang}.xml').getroot():
        exec(f'class{lang}.{rs.tag} = class {rs.tag}:pass')
        for c in rs:
            exec(f'{rs.tag}.{c.attrib["name"]}=str("{c.text}")')

however en_gb.base = class base:pass is not a valid syntax and so I'm stuck.

After creation here is how it should look (as in the raw code):

class en_gb:
    class section1:
        hello = "Hello"
        bye = "Goodbye"
    class section2:
        world = "World"
        end = "!"
class jp_tr:
    class section1:
        hello = "こんにちは"
        bye = "さようなら"
    class section2:
        world = "世界"
        end = "!"

Edit: I have replaced the previous method with SimpleNamespace

class local(object):
    def __init__(self, lang="en_gb"):
        l = localization()
        self = getattr(l.langs, lang)
    def set_lang(self, lang:str):
        self = getattr(l.langs, lang)

class localization:
    def __init__(self, lang="en_gb"):
        langs = {}
        for language in list(Path('./assets/local/').glob('*.xml')):
            l_name = Path(language).stem
            tree = ElementTree.parse(f".\\assets\\local\\{l_name}.xml")
            d = {}
            for child in tree.getroot():
                tmp = {}
                for c in child:
                    tmp[c.attrib['name']] = c.text
                d[child.tag] = SimpleNamespace(**tmp)
            langs[l_name] = SimpleNamespace(**d)
        self.langs = SimpleNamespace(**langs)
    def __get__(self):
        print("getting")
        return self.langs

However i cannot change the language using the locals class.

l = localization()
print(l.langs.en_gb.section1.hello) ##this works

lg = local()
print(lg.section1.hello) ##this doesnt work
#this should be able to change on the flu
lg.set_lang('jp_tr')
print(lg.section1.hello) ##should now be こんにちは