From 42525cfe8da69d277eb83a5006454ee4239ac599 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Mike=20F=C3=A4hrmann?= <mike_faehrmann@web.de>
Date: Tue, 7 Jun 2022 17:47:07 +0200
Subject: [PATCH] =?UTF-8?q?fix=20'{=E2=80=A6!j}'=20for=20otherwise=20non-s?=
 =?UTF-8?q?erializable=20types=20(##2624)?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

like 'datetime'
---
 gallery_dl/formatter.py | 3 ++-
 test/test_formatter.py  | 1 +
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/gallery_dl/formatter.py b/gallery_dl/formatter.py
index d1b3a8a7..f2c2d331 100644
--- a/gallery_dl/formatter.py
+++ b/gallery_dl/formatter.py
@@ -14,6 +14,7 @@ import string
 import _string
 import datetime
 import operator
+import functools
 from . import text, util
 
 _CACHE = {}
@@ -257,7 +258,7 @@ def parse_format_spec(format_spec, conversion):
             "u": str.upper,
             "c": str.capitalize,
             "C": string.capwords,
-            "j": json.dumps,
+            "j": functools.partial(json.dumps, default=str),
             "t": str.strip,
             "T": util.datetime_to_timestamp_string,
             "d": text.parse_timestamp,
diff --git a/test/test_formatter.py b/test/test_formatter.py
index efb69636..dc818b00 100644
--- a/test/test_formatter.py
+++ b/test/test_formatter.py
@@ -56,6 +56,7 @@ class TestFormatter(unittest.TestCase):
         self._run_test("{t!d:%Y-%m-%d}", "2010-01-01")
         self._run_test("{dt!T}", "1262304000")
         self._run_test("{l!j}", '["a", "b", "c"]')
+        self._run_test("{dt!j}", '"2010-01-01 00:00:00"')
 
         with self.assertRaises(KeyError):
             self._run_test("{a!q}", "hello world")