AttributeError: 'datetime.timezone' object has no attribute '_utcoffset'

[tvandraren]

I'm trying to execute this code from a 2 year-old project:

import pytz
from django.utils import timezone

pytz.timezone('Europe/Madrid').normalize(timezone.now())

and it suddenly gives me this:

Traceback (most recent call last):
  File "C:\Users\tvand\Documents\repos\Mitios\venv\lib\site-packages\django\core\handlers\exception.py", line 55, in inner
    response = get_response(request)
  File "C:\Users\tvand\Documents\repos\Mitios\venv\lib\site-packages\django\core\handlers\base.py", line 197, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "C:\Users\tvand\Documents\repos\Mitios\venv\lib\site-packages\django\views\generic\base.py", line 84, in view
    return self.dispatch(request, *args, **kwargs)
  File "C:\Users\tvand\Documents\repos\Mitios\venv\lib\site-packages\django\views\generic\base.py", line 119, in dispatch
    return handler(request, *args, **kwargs)
  File "C:\Users\tvand\Documents\repos\Mitios\weekplan\views.py", line 115, in get
    return render(
  File "C:\Users\tvand\Documents\repos\Mitios\venv\lib\site-packages\django\shortcuts.py", line 24, in render
    content = loader.render_to_string(template_name, context, request, using=using)
  File "C:\Users\tvand\Documents\repos\Mitios\venv\lib\site-packages\django\template\loader.py", line 62, in render_to_string
    return template.render(context, request)
  File "C:\Users\tvand\Documents\repos\Mitios\venv\lib\site-packages\django\template\backends\django.py", line 62, in render
    return self.template.render(context)
  File "C:\Users\tvand\Documents\repos\Mitios\venv\lib\site-packages\django\template\base.py", line 175, in render
    return self._render(context)
  File "C:\Users\tvand\Documents\repos\Mitios\venv\lib\site-packages\django\template\base.py", line 167, in _render
    return self.nodelist.render(context)
  File "C:\Users\tvand\Documents\repos\Mitios\venv\lib\site-packages\django\template\base.py", line 1000, in render
    return SafeString("".join([node.render_annotated(context) for node in self]))
  File "C:\Users\tvand\Documents\repos\Mitios\venv\lib\site-packages\django\template\base.py", line 1000, in <listcomp>
    return SafeString("".join([node.render_annotated(context) for node in self]))
  File "C:\Users\tvand\Documents\repos\Mitios\venv\lib\site-packages\django\template\base.py", line 958, in render_annotated
    return self.render(context)
  File "C:\Users\tvand\Documents\repos\Mitios\venv\lib\site-packages\django\template\defaulttags.py", line 238, in render
    nodelist.append(node.render_annotated(context))
  File "C:\Users\tvand\Documents\repos\Mitios\venv\lib\site-packages\django\template\base.py", line 958, in render_annotated
    return self.render(context)
  File "C:\Users\tvand\Documents\repos\Mitios\venv\lib\site-packages\django\template\defaulttags.py", line 238, in render
    nodelist.append(node.render_annotated(context))
  File "C:\Users\tvand\Documents\repos\Mitios\venv\lib\site-packages\django\template\base.py", line 958, in render_annotated
    return self.render(context)
  File "C:\Users\tvand\Documents\repos\Mitios\venv\lib\site-packages\django\template\loader_tags.py", line 208, in render
    return template.render(context)
  File "C:\Users\tvand\Documents\repos\Mitios\venv\lib\site-packages\django\template\base.py", line 177, in render
    return self._render(context)
  File "C:\Users\tvand\Documents\repos\Mitios\venv\lib\site-packages\django\template\base.py", line 167, in _render
    return self.nodelist.render(context)
  File "C:\Users\tvand\Documents\repos\Mitios\venv\lib\site-packages\django\template\base.py", line 1000, in render
    return SafeString("".join([node.render_annotated(context) for node in self]))
  File "C:\Users\tvand\Documents\repos\Mitios\venv\lib\site-packages\django\template\base.py", line 1000, in <listcomp>
    return SafeString("".join([node.render_annotated(context) for node in self]))
  File "C:\Users\tvand\Documents\repos\Mitios\venv\lib\site-packages\django\template\base.py", line 958, in render_annotated
    return self.render(context)
  File "C:\Users\tvand\Documents\repos\Mitios\venv\lib\site-packages\django\template\defaulttags.py", line 315, in render
    match = condition.eval(context)
  File "C:\Users\tvand\Documents\repos\Mitios\venv\lib\site-packages\django\template\defaulttags.py", line 878, in eval
    return self.value.resolve(context, ignore_failures=True)
  File "C:\Users\tvand\Documents\repos\Mitios\venv\lib\site-packages\django\template\base.py", line 712, in resolve
    obj = self.var.resolve(context)
  File "C:\Users\tvand\Documents\repos\Mitios\venv\lib\site-packages\django\template\base.py", line 842, in resolve
    value = self._resolve_lookup(context)
  File "C:\Users\tvand\Documents\repos\Mitios\venv\lib\site-packages\django\template\base.py", line 909, in _resolve_lookup
    current = current()
  File "C:\Users\tvand\Documents\repos\Mitios\weekplan\models.py", line 28, in es_atrasada
    fecha_asignacion = self._fecha_huso(self.fecha_asignacion)
  File "C:\Users\tvand\Documents\repos\Mitios\weekplan\models.py", line 44, in _fecha_huso
    pytz.timezone('Europe/Madrid').normalize(timezone.now())
  File "C:\Users\tvand\Documents\repos\Mitios\venv\lib\site-packages\pytz\tzinfo.py", line 252, in normalize
    offset = dt.tzinfo._utcoffset

I'm using:

Django==4.0.3
pytz==2022.1

I checked that django.utils.timezone.tzinfo does have a utcoffset. Has there been a change on pytz concerning this or is it Django's fault? Any idea on how to solve it?

[stub42]

pytz methods only work with pytz tzinfo instances. timezone.now() is not returning a pytz tzinfo instance. I don't know what it is, so cannot suggest how to convert between the two. The Django end may have been updated to use the new timezone support built into Python, making most of pytz obsolete.