jenkins-bot has submitted this change and it was merged. ( https://gerrit.wikimedia.org/r/348444 )

Change subject: config2: use repr() of exceptions to prevent UnicodeDecodeErrors ......................................................................

config2: use repr() of exceptions to prevent UnicodeDecodeErrors

When no program is configured to open .py files, the _win32_extension_command function will throw an OSError. On non-English Windows versions, this error often contains non-ascii characters. On Python 2, this error will be a str in the Windows' multi byte encoding. Trying to decode this error with a different encoding will cause an UnicodeDecodeError, which then blocks Pywikibot from being used.

Instead of trying to guess the correct encoding to use, use the repr() of the string. This is guaranteed to be ascii, and can therefore always be embedded in a unicode string safely.

Bug: T120222 Change-Id: I47e2756259ecbc1279e1124c076622177b3fc1d6 --- M pywikibot/config2.py 1 file changed, 1 insertion(+), 1 deletion(-)

Approvals: Merlijn van Deen: Looks good to me, approved jenkins-bot: Verified

diff --git a/pywikibot/config2.py b/pywikibot/config2.py index 90877ba..e0bac1e 100644 --- a/pywikibot/config2.py +++ b/pywikibot/config2.py @@ -942,7 +942,7 @@ return cmd[:-1].strip() except WindowsError as e: # Catch any key lookup errors - output('Unable to detect program for file extension "{0}": {1}'.format( + output('Unable to detect program for file extension "{0}": {1!r}'.format( extension, e))