[3.11] gh-103578: Fix pdb reading code with non-utf8 encoding (GH-103581) (#103867)

`pdb` should use `io.open_code` to open code to avoid encoding issue.
(cherry picked from commit 31acfd78a0810f84898d36a8289e407d3754b823)

Co-authored-by: Tian Gao <gaogaotiantian@hotmail.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/Lib/pdb.py b/Lib/pdb.py
index 57d070a..f9c5bee 100755
--- a/Lib/pdb.py
+++ b/Lib/pdb.py
@@ -154,7 +154,7 @@ class _ScriptTarget(str):
 
     @property
     def code(self):
-        with io.open(self) as fp:
+        with io.open_code(self) as fp:
             return f"exec(compile({fp.read()!r}, {self!r}, 'exec'))"