pythongh-114628: Display csv.Error without context (python#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'.

Author: terryjreedy

Lib/csv.py

@@ -113,8 +113,8 @@ def _validate(self):
         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."""

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.