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In Problem Set 3, Problem 6A: I can't get the provided perm.py file to return anything no matter what I pass it. I have also tried pasting its code into my program... still nothing. It doesn't seem to populate a list. Should it return a list, 'items', 'handlist', or 'toret', because if so, none of these are coming out of it. Relevant snippets from my code: from perm import * #I have also tried copy/pasting everything from this file into my program and calling it locally get_perms(hand, letters_remaining) xuniqueCombinations(hand, letters_remaining) #before and after these calls handlist = [], toret = [], & items =[]... nothing changes. Am I broke, or might it be the perm.py file?

MIT 6.00 Intro Computer Science (OCW)
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you would need something along the lines of toret = get_perms(hand, letters_remaining) so you can store the result that is returned by the function
Oops. That was an obvious omission on my part. However, when that is included in the code, it still yields an empty list of " toret = [''] ".
I have the following to start 6A for i in range(1,HAND_SIZE+1): perm_list=get_perms(hand,i) As long as the "hand" dictionary has something in it, perm_list should contain all combinations of the letters in hand starting at size 1 up to hand_size.

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To clarify, if hand is {'a':2,'c':2,'t':2} then on the first iteration perm_list will be ['a', 'a', 'c', 'c', 't', 't'].
Awesome. I have movement! Will give it a shot moving forward with debugging and will reply if I get stuck again. Thanks!

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