Fix #13, PEP8-ify notebooks.

stacks_queues/queue_from_stacks/queue_from_stacks_challenge.ipynb

@@ -34,7 +34,6 @@
    "source": [
     "## Constraints\n",
     "\n",
-
     "* Do you expect the methods to be enqueue and dequeue?\n",
     "    * Yes\n",
     "* Can we assume we already have a stack class that can be used for this problem?\n",
@@ -92,7 +91,7 @@
    "outputs": [],
    "source": [
     "class QueueFromStacks(object):\n",
-    "    \n",
+    "\n",
     "    def __init__(self):\n",
     "        # TODO: Implement me\n",
     "        pass\n",
@@ -131,7 +130,7 @@
     "\n",
     "\n",
     "class TestQueueFromStacks(object):\n",
-    "    \n",
+    "\n",
     "    def test_queue_from_stacks(self):\n",
     "        print('Test: Dequeue on empty stack')\n",
     "        queue = QueueFromStacks()\n",
@@ -141,7 +140,7 @@
     "        print('Test: Enqueue on non-empty stack')\n",
     "        print('Test: Multiple enqueue in a row')\n",
     "        num_items = 3\n",
-    "        for i in range (0, num_items):\n",
+    "        for i in range(0, num_items):\n",
     "            queue.enqueue(i)\n",
     "\n",
     "        print('Test: Dequeue on non-empty stack')\n",
@@ -158,10 +157,12 @@
     "\n",
     "        print('Success: test_queue_from_stacks')\n",
     "\n",
+    "\n",
     "def main():\n",
     "    test = TestQueueFromStacks()\n",
     "    test.test_queue_from_stacks()\n",
-    "    \n",
+    "\n",
+    "\n",
     "if __name__ == '__main__':\n",
     "    main()"
    ]

stacks_queues/queue_from_stacks/queue_from_stacks_solution.ipynb

@@ -33,7 +33,6 @@
    "source": [
     "## Constraints\n",
     "\n",
-
     "* Do you expect the methods to be enqueue and dequeue?\n",
     "    * Yes\n",
     "* Can we assume we already have a stack class that can be used for this problem?\n",
@@ -121,7 +120,7 @@
    "outputs": [],
    "source": [
     "class QueueFromStacks(object):\n",
-    "    \n",
+    "\n",
     "    def __init__(self):\n",
     "        self.left_stack = Stack()\n",
     "        self.right_stack = Stack()\n",
@@ -170,7 +169,7 @@
     "\n",
     "\n",
     "class TestQueueFromStacks(object):\n",
-    "    \n",
+    "\n",
     "    def test_queue_from_stacks(self):\n",
     "        print('Test: Dequeue on empty stack')\n",
     "        queue = QueueFromStacks()\n",
@@ -180,7 +179,7 @@
     "        print('Test: Enqueue on non-empty stack')\n",
     "        print('Test: Multiple enqueue in a row')\n",
     "        num_items = 3\n",
-    "        for i in range (0, num_items):\n",
+    "        for i in range(0, num_items):\n",
     "            queue.enqueue(i)\n",
     "\n",
     "        print('Test: Dequeue on non-empty stack')\n",
@@ -197,10 +196,12 @@
     "\n",
     "        print('Success: test_queue_from_stacks')\n",
     "\n",
+    "\n",
     "def main():\n",
     "    test = TestQueueFromStacks()\n",
     "    test.test_queue_from_stacks()\n",
-    "    \n",
+    "\n",
+    "\n",
     "if __name__ == '__main__':\n",
     "    main()"
    ]

stacks_queues/queue_from_stacks/test_queue_from_stacks.py

@@ -2,7 +2,7 @@ from nose.tools import assert_equal
 
 
 class TestQueueFromStacks(object):
-    
+
     def test_queue_from_stacks(self):
         print('Test: Dequeue on empty stack')
         queue = QueueFromStacks()
@@ -12,7 +12,7 @@ class TestQueueFromStacks(object):
         print('Test: Enqueue on non-empty stack')
         print('Test: Multiple enqueue in a row')
         num_items = 3
-        for i in range (0, num_items):
+        for i in range(0, num_items):
             queue.enqueue(i)
 
         print('Test: Dequeue on non-empty stack')
@@ -29,9 +29,11 @@ class TestQueueFromStacks(object):
 
         print('Success: test_queue_from_stacks')
 
+
 def main():
     test = TestQueueFromStacks()
     test.test_queue_from_stacks()
-    
+
+
 if __name__ == '__main__':
     main()