AttributeError: when importing pokergames.leduc_gametree

[xoren22]

machine: intel core i3, Ubuntu 16.04, python 3.6
how to reproduce -

1. git clone repo
2. cd to local folder containing the repo
3. create a jupyter notebook and import leduc as follows from pokergames import leduc_gametree

The error message attached below:

`---------------------------------------------------------------------------
AttributeError Traceback (most recent call last)
in
----> 1 from pokergames import leduc_gametree

~/Desktop/pycfr/pokergames.py in
----> 1 from pokertrees import *
2
3 def kuhn_eval(hc, board):
4 return hc[0].rank
5

~/Desktop/pycfr/pokertrees.py in
3 from itertools import product
4 from collections import Counter
----> 5 from hand_evaluator import HandEvaluator
6 from copy import deepcopy
7 from functools import partial

~/Desktop/pycfr/hand_evaluator.py in
----> 1 from lookup_tables import LookupTables
2 from popcount import PopCount
3 from itertools import combinations
4 from operator import mul, or, and, xor
5

~/Desktop/pycfr/lookup_tables.py in
----> 1 from card import Card
2
3 class LookupTables:
4 """
5 Top level attributes are general, like primes, deck, etc

~/Desktop/pycfr/card.py in
1 import re
2
----> 3 class Card:
4 SUIT_TO_STRING = {
5 1: "s",

~/Desktop/pycfr/card.py in Card()
30 RANK_ACE = 14
31
---> 32 STRING_TO_SUIT = dict([(v, k) for k, v in SUIT_TO_STRING.iteritems()])
33 STRING_TO_RANK = dict([(v, k) for k, v in RANK_TO_STRING.iteritems()])
34

AttributeError: 'dict' object has no attribute 'iteritems'`

[tansey]

This is a python 3 compatibility issue. Right now the code only supports python 2.7. I'm happy to accept a pull request if anyone wants to upgrade the code. I'm not sure when I'll have time to do it myself.