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

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This hides unwanted implementation details from tracebacks.
This commit is contained in:
Serhiy Storchaka 2017-04-05 09:37:24 +03:00 • committed by GitHub
parent 43ba8861e0
commit 5affd23e6f
30 changed files with 50 additions and 48 deletions
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3
Lib/locale.py
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@ -512,7 +512,8 @@ def _build_localename(localetuple):
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')):