cleanup.

Author: dandye

0011_variable_surprises.ipynb

@@ -122,15 +122,6 @@
      ], 
      "prompt_number": 38
     }, 
-    {
-     "cell_type": "markdown", 
-     "source": [
-      "Exercises:", 
-      "", 
-      "1. Print the following but D.R.Y. (Don't Repeat Yourself):", 
-      "London bridge is falling down, falling down, falling down."
-     ]
-    }, 
     {
      "cell_type": "markdown", 
      "source": [
@@ -188,8 +179,7 @@
       "", 
       "Revisit the list methods and document some Supplies! in a new cell below.  Be prepared to share them with the rest of the class.", 
       "", 
-      "<iframe width=900 height=400 src=\"http://docs.python.org/tutorial/datastructures.html\"></iframe>", 
-      ""
+      "<iframe width=900 height=400 src=\"http://docs.python.org/tutorial/datastructures.html\"></iframe>"
      ]
     }
    ]

0030_conditionals.ipynb

@@ -20,11 +20,11 @@
       "if True: ", 
       "    print \"True is, by definition, true\"", 
       "if False:", 
-      "    print \"If this gets printed, there is something horribly wrong\"", 
+      "    print \"If this gets printed, there is something horribly wrong.\"", 
       "if 1:", 
-      "    print \"True/False. 1/0.  Good/Evil... well not so much that last one.\"", 
+      "    print \"True/False. 1/0.  Good/Evil... well, not so much that last one.\"", 
       "if 0:", 
-      "    print \"If this gets printed, there is something horribly wrong\"", 
+      "    print \"If this gets printed, there is something horribly wrong.\"", 
       "a = \"Foo\"", 
       "if a == \"Foo\":", 
       "    print \"this *evaluates* to True.\"", 
@@ -53,7 +53,7 @@
      "input": [
       "# If, else", 
       "if False:", 
-      "    print \"If this gets printed, there is something horribly wrong\"", 
+      "    print \"If this gets printed, there is something horribly wrong.\"", 
       "else:", 
       "    print \"The alternative\"    "
      ], 

0050_reading_from_files.ipynb

@@ -14,7 +14,7 @@
     }, 
     {
      "cell_type": "code", 
-     "collapsed": false, 
+     "collapsed": true, 
      "input": [
       "of = open(\"./sample_data/lorem_ipsum.txt\")  # of is a file-handler", 
       "my_string = of.read() # read method on the file handler", 
@@ -49,7 +49,7 @@
     }, 
     {
      "cell_type": "code", 
-     "collapsed": false, 
+     "collapsed": true, 
      "input": [
       "of = open(\"./sample_data/hello_world.txt\",\"w\") # note the second argument to open", 
       "for i in [\"Hello\",\"World\",\"!\"]:", 
@@ -63,7 +63,7 @@
     }, 
     {
      "cell_type": "code", 
-     "collapsed": false, 
+     "collapsed": true, 
      "input": [
       "of = open(\"./sample_data/hello_world.txt\",\"w\") # note the second argument to open", 
       "for i in [\"Hello\",\"World\",\"!\"]:", 

0075_working_with_dates.ipynb

@@ -10,7 +10,7 @@
      "cell_type": "code", 
      "collapsed": false, 
      "input": [
-      "from datetime import date", 
+      "from datetime import date # sneak peak of importing classes from modules!", 
       "d = date(2012,5,19)", 
       "print d.year", 
       "print d.month", 

exercise_stocks_correlation_matrix.ipynb

@@ -6,6 +6,62 @@
  "worksheets": [
   {
    "cells": [
+    {
+     "cell_type": "markdown", 
+     "source": [
+      "Your goal is to create a correlation matrix like the one below", 
+      "", 
+      "<img src=\"./images/s_and_p500_correlation_matrix.png\" />"
+     ]
+    }, 
+    {
+     "cell_type": "markdown", 
+     "source": [
+      "Read in the example data provided in ./sample_data/sp500hst.txt", 
+      "    ", 
+      "    date,ticker,open,high,low,close,volume", 
+      "    20090821,A,25.6,25.61,25.22,25.55,34758", 
+      "    20090824,A,25.64,25.74,25.33,25.5,22247", 
+      "    20090825,A,25.5,25.7,25.225,25.34,30891", 
+      "    20090826,A,25.32,25.6425,25.145,25.48,33334"
+     ]
+    }, 
+    {
+     "cell_type": "code", 
+     "collapsed": false, 
+     "input": [
+      "# You need to know this.", 
+      "", 
+      "from scipy.stats.stats import pearsonr", 
+      "", 
+      "a = range(100)", 
+      "b = a[:]", 
+      "b.reverse()", 
+      "print a", 
+      "print b", 
+      "", 
+      "aap,aas = pearsonr(a,a)", 
+      "print aap", 
+      "abp,abs = pearsonr(a,b)", 
+      "print abp", 
+      "", 
+      "for "
+     ], 
+     "language": "python", 
+     "outputs": [
+      {
+       "output_type": "stream", 
+       "stream": "stdout", 
+       "text": [
+        "[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99]", 
+        "[99, 98, 97, 96, 95, 94, 93, 92, 91, 90, 89, 88, 87, 86, 85, 84, 83, 82, 81, 80, 79, 78, 77, 76, 75, 74, 73, 72, 71, 70, 69, 68, 67, 66, 65, 64, 63, 62, 61, 60, 59, 58, 57, 56, 55, 54, 53, 52, 51, 50, 49, 48, 47, 46, 45, 44, 43, 42, 41, 40, 39, 38, 37, 36, 35, 34, 33, 32, 31, 30, 29, 28, 27, 26, 25, 24, 23, 22, 21, 20, 19, 18, 17, 16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0]", 
+        "1.0", 
+        "-1.0"
+       ]
+      }
+     ], 
+     "prompt_number": 7
+    }, 
     {
      "cell_type": "code", 
      "collapsed": true,