From ffb2f9e806bae9991ebbe81dc4cfecc84a5a2e3a Mon Sep 17 00:00:00 2001
From: Szymon Klepacz <szymonk92@gmail.com>
Date: Sat, 16 Apr 2016 16:12:40 +0200
Subject: [PATCH] Fixed TypeError when retraining

The error 'TypeError: Population must be a sequence or set.  For dicts, use list(d)' sometimes occurred
---
 deep_q_network.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/deep_q_network.py b/deep_q_network.py
index 5c969c9..f49d9b1 100755
--- a/deep_q_network.py
+++ b/deep_q_network.py
@@ -150,7 +150,7 @@ def trainNetwork(s, readout, h_fc1, sess):
         # only train if done observing
         if t > OBSERVE:
             # sample a minibatch to train on
-            minibatch = random.sample(D, BATCH)
+            minibatch = random.sample(list(D), BATCH)
 
             # get the batch variables
             s_j_batch = [d[0] for d in minibatch]