I think there is a bug in the "Moria Doors" task evaluation.
It fails with a TypeError on Test 2/2, testing find_word(u"Speak friend and enter.")
I'm quite sure that leading 'u' outside of the quotation marks.
Please see the attached screenshot.
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Created at: 2016/02/14 12:14; Updated at: 2016/02/15 19:50