From: Terry Jan Reedy <tjreedy@udel.edu>
Date: Mon, 5 Feb 2024 01:57:54 +0000 (-0500)
Subject: gh-114628: Display csv.Error without context (#115005)
X-Git-Tag: v3.13.0a4~156
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=e207cc181fbb0ceb30542fd0d68140c916305f57;p=thirdparty%2FPython%2Fcpython.git

gh-114628: Display csv.Error without context (#115005)

When cvs.Error is raised when TypeError is caught,
the TypeError display and 'During handling' note is just noise
with duplicate information.  Suppress with 'from None'.
---

diff --git a/Lib/csv.py b/Lib/csv.py
index a079279b8b8c..75e35b232367 100644
--- a/Lib/csv.py
+++ b/Lib/csv.py
@@ -113,8 +113,8 @@ class Dialect:
         try:
             _Dialect(self)
         except TypeError as e:
-            # We do this for compatibility with py2.3
-            raise Error(str(e))
+            # Re-raise to get a traceback showing more user code.
+            raise Error(str(e)) from None
 
 class excel(Dialect):
     """Describe the usual properties of Excel-generated CSV files."""
diff --git a/Misc/NEWS.d/next/Library/2024-02-04-13-17-33.gh-issue-114628.WJpqqS.rst b/Misc/NEWS.d/next/Library/2024-02-04-13-17-33.gh-issue-114628.WJpqqS.rst
new file mode 100644
index 000000000000..8138adc62c95
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2024-02-04-13-17-33.gh-issue-114628.WJpqqS.rst
@@ -0,0 +1,2 @@
+When csv.Error is raised when handling TypeError, do not print the TypeError
+traceback.