commit 5affd23e6f42125998724787025080a24839266e
author Serhiy Storchaka <storchaka@gmail.com> Wed Apr 05 09:37:24 2017 +0300
committer GitHub <noreply@github.com> Wed Apr 05 09:37:24 2017 +0300
tree 8b7ca82362e78a32805b117d574082d512251d3c
parent 43ba8861e0ad044efafa46a7cc04e12ac5df640e

bpo-29762: More use "raise from None". (#569)

This hides unwanted implementation details from tracebacks.

Lib/locale.py

diff --git a/Lib/locale.py b/Lib/locale.py
index 73fc94d..5763b14 100644
--- a/Lib/locale.py
+++ b/Lib/locale.py
@@ -512,7 +512,8 @@
         else:
             return language + '.' + encoding
     except (TypeError, ValueError):
-        raise TypeError('Locale must be None, a string, or an iterable of two strings -- language code, encoding.')
+        raise TypeError('Locale must be None, a string, or an iterable of '
+                        'two strings -- language code, encoding.') from None
 
 def getdefaultlocale(envvars=('LC_ALL', 'LC_CTYPE', 'LANG', 'LANGUAGE')):