Polish queue list solution

stacks_queues/queue_list/queue_list.py

@@ -24,14 +24,11 @@ class Queue(object):
         # Empty list
         if self.first is None and self.last is None:
             return None
-
+        data = self.first.data
         # Remove only element from a one element list
-        elif self.first == self.last:
-            data = self.first.data
+        if self.first == self.last:
             self.first = None
             self.last = None
-            return data
         else:
-            data = self.first.data
             self.first = self.first.next
-            return data
+        return data

stacks_queues/queue_list/queue_list_solution.ipynb

@@ -142,17 +142,14 @@
     "        # Empty list\n",
     "        if self.first is None and self.last is None:\n",
     "            return None\n",
-    "\n",
+    "        data = self.first.data\n",
     "        # Remove only element from a one element list\n",
-    "        elif self.first == self.last:\n",
-    "            data = self.first.data\n",
+    "        if self.first == self.last:\n",
     "            self.first = None\n",
     "            self.last = None\n",
-    "            return data\n",
     "        else:\n",
-    "            data = self.first.data\n",
     "            self.first = self.first.next\n",
-    "            return data"
+    "        return data"
    ]
   },
   {
@@ -289,21 +286,21 @@
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 2",
+   "display_name": "Python 3",
    "language": "python",
-   "name": "python2"
+   "name": "python3"
   },
   "language_info": {
    "codemirror_mode": {
     "name": "ipython",
-    "version": 2
+    "version": 3
    },
    "file_extension": ".py",
    "mimetype": "text/x-python",
    "name": "python",
    "nbconvert_exporter": "python",
-   "pygments_lexer": "ipython2",
-   "version": "2.7.10"
+   "pygments_lexer": "ipython3",
+   "version": "3.4.3"
   }
  },
  "nbformat": 4,