BB: Pipeline.get_time() regression in 5.0.1: datetime.fromisoformat() fails on Python <3.11 for non-3/6-digit fractional seconds

 atlassian-api#1651

Author: gonchik

atlassian/bitbucket/base.py

@@ -1,6 +1,7 @@
 # coding=utf-8
 
 import copy
+import re
 from datetime import datetime
 from pprint import PrettyPrinter
 
@@ -158,8 +159,14 @@ def get_time(self, id):
         if isinstance(value_str, str):
             # Bitbucket Cloud returns ISO 8601 timestamps with optional
             # fractional seconds and either an offset or a trailing ``Z``.
-            # Do not trim or otherwise alter the timestamp: doing so turns
-            # ``+00:00`` into the invalid ``+00:00Z`` form.
+            # Python 3.10 and older only accept 0, 3, or 6 fractional digits,
+            # while Bitbucket may return another precision. Clamp the fraction
+            # to microsecond precision without touching the UTC offset.
+            value_str = re.sub(
+                r"\.(\d+)(?=(?:Z|[+-]\d{2}:?\d{2})?$)",
+                lambda match: "." + match.group(1)[:6].ljust(6, "0"),
+                value_str,
+            )
             value = datetime.fromisoformat(value_str.replace("Z", "+00:00"))
         else:
             value = value_str

tests/test_bitbucket_cloud_oo.py

@@ -1,6 +1,6 @@
 # coding: utf8
 import sys
-from datetime import datetime, timezone
+from datetime import datetime, timedelta, timezone
 
 import pytest
 
@@ -9,6 +9,7 @@
 from atlassian.bitbucket.cloud.common.users import User
 from atlassian.bitbucket.cloud.repositories import WorkspaceRepositories
 from atlassian.bitbucket.cloud.repositories.commits import Commit as RepositoryCommit
+from atlassian.bitbucket.cloud.repositories.pipelines import Pipeline
 from atlassian.bitbucket.cloud.repositories.pullRequests import (
     Build,
     Comment,
@@ -52,6 +53,28 @@ def test_commit_date_parses_iso8601_timestamps(self, timestamp, expected):
 
         assert commit.date == expected
 
+    @pytest.mark.parametrize(
+        "timestamp, expected",
+        [
+            (
+                "2026-08-15T23:19:42.71295178+00:00",
+                datetime(2026, 8, 15, 23, 19, 42, 712951, tzinfo=timezone.utc),
+            ),
+            (
+                "2026-08-15T23:19:42.7+05:30",
+                datetime(2026, 8, 15, 23, 19, 42, 700000, tzinfo=timezone(timedelta(hours=5, minutes=30))),
+            ),
+        ],
+    )
+    def test_pipeline_time_normalizes_variable_fractional_seconds(self, timestamp, expected):
+        pipeline = Pipeline(
+            "https://api.bitbucket.org/2.0/repositories/workspace/repository/pipelines/{pipeline}",
+            {"type": "pipeline", "completed_on": timestamp},
+            **CLOUD._new_session_args,
+        )
+
+        assert pipeline.completed_on == expected
+
     def test_each_workspace_uses_user_workspaces_endpoint(self, monkeypatch):
         workspaces = CLOUD.workspaces
         workspace = object()