utils: Fix datetime_to_timestamp

Replace usage of deprecated function `datetime.utcfromtimestamp` and make sure the input date is UTC before subtracting. Signed-off-by: Paweł Gronowski <[email protected]>
docker · Dec 22, 2023 · 1784cc2 · 1784cc2
1 parent 6ceb082
commit 1784cc2
Showing 1 changed file with 3 additions and 3 deletions.
diff --git a/docker/utils/utils.py b/docker/utils/utils.py
@@ -5,7 +5,7 @@
 import os.path
 import shlex
 import string
-from datetime import datetime
+from datetime import datetime, timezone
 from packaging.version import Version
 
 from .. import errors
@@ -394,8 +394,8 @@ def convert_filters(filters):
 
 
 def datetime_to_timestamp(dt):
-    """Convert a UTC datetime to a Unix timestamp"""
-    delta = dt - datetime.utcfromtimestamp(0)
+    """Convert a datetime to a Unix timestamp"""
+    delta = dt.astimezone(timezone.utc) - datetime(1970, 1, 1, tzinfo=timezone.utc)
     return delta.seconds + delta.days * 24 * 3600