2 files changed, 8 insertions, 13 deletions
diff --git a/django/db/backends/base/base.py b/django/db/backends/base/base.py
index 3b845ec9b3..5f2e7bcd4d 100644
--- a/django/db/backends/base/base.py
+++ b/django/db/backends/base/base.py
@@ -32,15 +32,6 @@ RAN_DB_VERSION_CHECK = set()
 logger = logging.getLogger("django.db.backends.base")
 
 
-# RemovedInDjango50Warning
-def timezone_constructor(tzname):
-    if settings.USE_DEPRECATED_PYTZ:
-        import pytz
-
-        return pytz.timezone(tzname)
-    return zoneinfo.ZoneInfo(tzname)
-
-
 class BaseDatabaseWrapper:
     """Represent a database connection."""
 
@@ -166,7 +157,7 @@ class BaseDatabaseWrapper:
         elif self.settings_dict["TIME_ZONE"] is None:
             return datetime.timezone.utc
         else:
-            return timezone_constructor(self.settings_dict["TIME_ZONE"])
+            return zoneinfo.ZoneInfo(self.settings_dict["TIME_ZONE"])
 
     @cached_property
     def timezone_name(self):
diff --git a/django/db/backends/sqlite3/_functions.py b/django/db/backends/sqlite3/_functions.py
index b590111ec5..c60549f8af 100644
--- a/django/db/backends/sqlite3/_functions.py
+++ b/django/db/backends/sqlite3/_functions.py
@@ -26,7 +26,6 @@ from math import (
 )
 from re import search as re_search
 
-from django.db.backends.base.base import timezone_constructor
 from django.db.backends.utils import (
     split_tzname_delta,
     typecast_time,
@@ -36,6 +35,11 @@ from django.utils import timezone
 from django.utils.crypto import md5
 from django.utils.duration import duration_microseconds
 
+try:
+    import zoneinfo
+except ImportError:
+    from backports import zoneinfo
+
 
 def register(connection):
     create_deterministic_function = functools.partial(
@@ -111,14 +115,14 @@ def _sqlite_datetime_parse(dt, tzname=None, conn_tzname=None):
     except (TypeError, ValueError):
         return None
     if conn_tzname:
-        dt = dt.replace(tzinfo=timezone_constructor(conn_tzname))
+        dt = dt.replace(tzinfo=zoneinfo.ZoneInfo(conn_tzname))
     if tzname is not None and tzname != conn_tzname:
         tzname, sign, offset = split_tzname_delta(tzname)
         if offset:
             hours, minutes = offset.split(":")
             offset_delta = timedelta(hours=int(hours), minutes=int(minutes))
             dt += offset_delta if sign == "+" else -offset_delta
-        dt = timezone.localtime(dt, timezone_constructor(tzname))
+        dt = timezone.localtime(dt, zoneinfo.ZoneInfo(tzname))
     return dt