From 2f2706a9e6eadaa1ef6da48b9675a26be607f683 Mon Sep 17 00:00:00 2001
From: Fridolin Glatter <glatter@iiasa.ac.at>
Date: Thu, 8 Feb 2024 11:51:17 +0100
Subject: [PATCH] Resolve datetime deprecation warnings

---
 ixmp4/data/db/base.py         | 7 +++++--
 ixmp4/server/rest/__init__.py | 4 ++--
 2 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/ixmp4/data/db/base.py b/ixmp4/data/db/base.py
index c9587e5a..a476fb6c 100644
--- a/ixmp4/data/db/base.py
+++ b/ixmp4/data/db/base.py
@@ -1,6 +1,6 @@
 import logging
 import sqlite3
-from datetime import datetime
+from datetime import datetime, timezone
 from typing import (
     TYPE_CHECKING,
     Any,
@@ -116,7 +116,10 @@ def get(self, *args, **kwargs) -> ModelType:
 
 class Creator(BaseRepository[ModelType], abstract.Creator):
     def get_creation_info(self) -> dict:
-        info = {"created_at": datetime.utcnow(), "created_by": "@unknown"}
+        info = {
+            "created_at": datetime.now(tz=timezone.utc),
+            "created_by": "@unknown",
+        }
         if self.backend.auth_context is not None:
             info["created_by"] = self.backend.auth_context.user.username
         return info
diff --git a/ixmp4/server/rest/__init__.py b/ixmp4/server/rest/__init__.py
index 85c833be..307be244 100644
--- a/ixmp4/server/rest/__init__.py
+++ b/ixmp4/server/rest/__init__.py
@@ -1,4 +1,4 @@
-from datetime import datetime
+from datetime import datetime, timezone
 
 from fastapi import Depends, FastAPI, Path, Request
 from fastapi.encoders import jsonable_encoder
@@ -69,7 +69,7 @@ def root(
         version=version,
         is_managed=settings.managed,
         manager_url=str(settings.manager_url),
-        utcnow=datetime.utcnow(),
+        utcnow=datetime.now(tz=timezone.utc),
     )