From: Tian Gao <gaogaotiantian@hotmail.com>
Date: Fri, 19 Apr 2024 04:07:05 +0000 (-0700)
Subject: [3.12] gh-117535: Ignore made up file name "sys" for warnings (#118014)
X-Git-Tag: v3.12.4~200
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=bbb1a8e7686353e1ae848ee77453195d1a6373e4;p=thirdparty%2FPython%2Fcpython.git

[3.12] gh-117535: Ignore made up file name "sys" for warnings (#118014)
---

diff --git a/Lib/warnings.py b/Lib/warnings.py
index 391a501f7282..fc8c0128e3a1 100644
--- a/Lib/warnings.py
+++ b/Lib/warnings.py
@@ -36,7 +36,9 @@ def _formatwarnmsg_impl(msg):
     category = msg.category.__name__
     s =  f"{msg.filename}:{msg.lineno}: {category}: {msg.message}\n"
 
-    if msg.line is None:
+    # "sys" is a made up file name when we are not able to get the frame
+    # so do not try to get the source line
+    if msg.line is None and msg.filename != "sys":
         try:
             import linecache
             line = linecache.getline(msg.filename, msg.lineno)
diff --git a/Misc/NEWS.d/next/Library/2024-04-17-23-38-06.gh-issue-117535.4Fgjlq.rst b/Misc/NEWS.d/next/Library/2024-04-17-23-38-06.gh-issue-117535.4Fgjlq.rst
new file mode 100644
index 000000000000..2e664c70baa2
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2024-04-17-23-38-06.gh-issue-117535.4Fgjlq.rst
@@ -0,0 +1 @@
+Do not try to get the source line for made up file name "sys" in :mod:`warnings`.