From 6a89f748a435a416dad920807e59312600c9c2ad Mon Sep 17 00:00:00 2001
From: mehmet turac <mehmetturac@gmail.com>
Date: Wed, 2 Sep 2026 10:35:56 +0300
Subject: [PATCH] Allow more than 9 subsecond digits in ISO 8601 parsing

The subsecond regex group only accepted 1-9 digits, so timestamps
with higher precision (e.g. from .NET or database drivers that emit
10+ fractional digits) raised a ParseError.

Widen the pattern to accept any number of digits. The processing
code already truncates to 6 digits for microseconds, so the change
is safe.
---
 src/pendulum/parsing/iso8601.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/pendulum/parsing/iso8601.py b/src/pendulum/parsing/iso8601.py
index c65d249e..699185a0 100644
--- a/src/pendulum/parsing/iso8601.py
+++ b/src/pendulum/parsing/iso8601.py
@@ -49,7 +49,7 @@
     # Subsecond part (optional)
     "    (?P<subsecondsection>"
     "        (?:[.,])"  # Subsecond separator (optional)
-    r"        (?P<subsecond>\d{1,9})"  # Subsecond
+    r"        (?P<subsecond>\d+)"  # Subsecond
     "    )?"
     # Timezone offset
     "    (?P<tz>"