From: Daniele Varrazzo <daniele.varrazzo@gmail.com>
Date: Sun, 16 May 2021 00:24:50 +0000 (+0200)
Subject: Don't chain exceptions raising in decimal binary loading
X-Git-Tag: 3.0.dev0~45
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=be5346757bc6eeb8bb29834a31eb68ebaf7f98cd;p=thirdparty%2Fpsycopg.git

Don't chain exceptions raising in decimal binary loading
---

diff --git a/psycopg3/psycopg3/types/numeric.py b/psycopg3/psycopg3/types/numeric.py
index 0108e95aa..d1dca439f 100644
--- a/psycopg3/psycopg3/types/numeric.py
+++ b/psycopg3/psycopg3/types/numeric.py
@@ -369,7 +369,9 @@ class NumericBinaryLoader(Loader):
             try:
                 return _decimal_special[sign]
             except KeyError:
-                raise e.DataError(f"bad value for numeric sign: 0x{sign:X}")
+                raise e.DataError(
+                    f"bad value for numeric sign: 0x{sign:X}"
+                ) from None
 
 
 NUMERIC_NAN_BIN = _pack_numeric_head(0, 0, NUMERIC_NAN, 0)