From b265249fe93395b9c608ebfc21c0ea0d215198d2 Mon Sep 17 00:00:00 2001
From: Krasimir Angelov <kr.angelov@gmail.com>
Date: Thu, 7 Sep 2023 10:17:00 +0200
Subject: [PATCH] don't use PyObject_CallOneArg for compatibility with old
 Python

---
 src/runtime/python/pypgf.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/runtime/python/pypgf.c b/src/runtime/python/pypgf.c
index e0ecc00b3..4c62bf62e 100644
--- a/src/runtime/python/pypgf.c
+++ b/src/runtime/python/pypgf.c
@@ -1630,7 +1630,7 @@ int py_readfn(void *cookie, char *mem, int size)
         PyMemoryView_FromMemory(mem, (Py_ssize_t) size, PyBUF_WRITE);
 
     PyObject *res =
-        PyObject_CallOneArg(source, mv);
+        PyObject_CallFunction(source, "O", mv);
 
     Py_DECREF(mv);