Comment 15 for bug 1580678

To some extent, this bug intersects with the recently described me:
https://bugs.launchpad.net/swift/+bug/1648082
Maybe my decision in your case, too, can help:
>> 2. Try get codec from gettext and change finction gettext_ in swift/__init__.py, as
def gettext_(msg):
    return _t.gettext(msg).decode(_t.charset())