Raise ValueError when attempting to set the _CHUNK_SIZE attribute of a TextIOWrapper to a huge value, not TypeError.
diff --git a/Misc/NEWS b/Misc/NEWS
index 8a84891..60d43f1 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -225,6 +225,9 @@
Library
-------
+- Raise ValueError when attempting to set the _CHUNK_SIZE attribute of a
+ TextIOWrapper to a huge value, not TypeError.
+
- Issue #12504: Close file handles in a timely manner in packaging.database.
This fixes a bug with the remove (uninstall) feature on Windows.
diff --git a/Modules/_io/textio.c b/Modules/_io/textio.c
index 70d062b..1a32120 100644
--- a/Modules/_io/textio.c
+++ b/Modules/_io/textio.c
@@ -2618,7 +2618,7 @@
{
Py_ssize_t n;
CHECK_INITIALIZED_INT(self);
- n = PyNumber_AsSsize_t(arg, PyExc_TypeError);
+ n = PyNumber_AsSsize_t(arg, PyExc_ValueError);
if (n == -1 && PyErr_Occurred())
return -1;
if (n <= 0) {