reconvert

Author: bnmnetp

pretext/Appendices/foo

@@ -0,0 +1,25 @@
+<section xml:id="appendices_test-module-source-code">
+        <title><c>test</c> module source code</title>
+        <p>Starting in the Functions chapter, we have written unit tests using the <c>testEqual</c> function from
+            the <c>test</c> module. This test module is not included in the standard Python distribution. (There is
+            a standard test module but it is different from this.) What follows is the source code for this <c>test</c> module.</p>
+        <program language="python"><input>
+def testEqual(actual,expected,places=5):
+    '''
+    Does the actual value equal the expected value?
+    For floats, places indicates how many places, right of the decimal, must be correct
+    '''
+    if isinstance(expected,float):
+        if abs(actual-expected) &lt; 10**(-places):
+            print('\tPass')
+            return True
+    else:
+        if actual == expected:
+            print('\tPass')
+            return True
+    print('\tTest Failed: expected {} but got {}'.format(expected,actual))
+    return False
+</input></program>
+        <p>To use this module when programming on your own computer, save the above code with the name <term>test.py</term> in the same folder as the python program you want to test.</p>
+    </section>
+

pretext/ClassesBasics/Exercises.ptx

@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <exercises xml:id="classes-basics_exercises">
   <title>Exercises</title>
-  <exercise xml:id="classes_q1">
+  <exercise label="classes_q1">
     <statement>
       <p>Add a <c>distanceFromPoint</c> method that works similar to <c>distanceFromOrigin</c> except that it
                         takes a <c>Point</c> as a parameter and
@@ -46,7 +46,7 @@ print(p.distanceFromPoint(q))
       </program>
     </solution>
   </exercise>
-  <exercise xml:id="ch_cl_02">
+  <exercise label="ch_cl_02">
     <statement>
       <p>Add a method <c>reflect_x</c> to Point which returns a new Point, one which is the
                 reflection of the point about the x-axis.  For example,
@@ -58,7 +58,7 @@ print(p.distanceFromPoint(q))
         </input>
     </program>
   </exercise>
-  <exercise xml:id="classes_q3">
+  <exercise label="classes_q3">
     <statement>
       <p>Add a method <c>slope_from_origin</c> which returns the slope of the line joining the origin
                         to the point.   For example,</p>
@@ -104,7 +104,7 @@ print(p.slope_from_origin())
       </program>
     </solution>
   </exercise>
-  <exercise xml:id="ch_cl_04">
+  <exercise label="ch_cl_04">
     <statement>
       <p>The equation of a straight line is  <q>y = ax + b</q>, (or perhaps <q>y = mx + c</q>).
                 The coefficients a and b completely describe the line.  Write a method in the
@@ -122,7 +122,7 @@ print(p.slope_from_origin())
         </input>
     </program>
   </exercise>
-  <exercise xml:id="classes_q5">
+  <exercise label="classes_q5">
     <statement>
       <p>Add a method called <c>move</c> that will take two parameters, call them <c>dx</c> and <c>dy</c>.  The method will
                         cause the point to move in the x and y direction the number of units given. (Hint: you will change the values of the
@@ -169,7 +169,7 @@ print(p)
       </program>
     </solution>
   </exercise>
-  <exercise xml:id="classes_q6">
+  <exercise label="classes_q6">
     <statement>
       <p>Given three points that fall on the circumference of a circle, find the center and radius of the circle.</p>
     </statement>

pretext/ClassesBasics/UserDefinedClasses.ptx

@@ -125,7 +125,7 @@ alex = Turtle()
   <p>
     <term>Check Your Understanding</term>
   </p>
-  <exercise xml:id="chp17_objects">
+  <exercise label="chp17_objects">
     <statement>
       <p>What is the the output of the following print code?</p>
       <program language="python">

pretext/ClassesDiggingDeeper/Exercises.ptx

@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <exercises xml:id="classes-digging-deeper_exercises">
   <title>Exercises</title>
-  <exercise xml:id="classes_deeper_q1">
+  <exercise label="classes_deeper_q1">
     <statement>
       <p>We can represent a rectangle by knowing three things: the location of its lower left corner, its width, and its height.
                         Create a class definition for a Rectangle class using this idea.  To create a Rectangle object at location (4,5) with width 6
@@ -50,7 +50,7 @@ print(r)
       </program>
     </solution>
   </exercise>
-  <exercise xml:id="ch_cl2_q2">
+  <exercise label="ch_cl2_q2">
     <statement>
       <p>Add the following accessor methods to the Rectangle class: <c>getWidth</c>, <c>getHeight</c>, <c>__str__</c>.</p>
     </statement>
@@ -60,7 +60,7 @@ print(r)
         </input>
     </program>
   </exercise>
-  <exercise xml:id="ch_cl2_q3">
+  <exercise label="ch_cl2_q3">
     <statement>
       <p>Add a method <c>area</c> to the Rectangle class that returns the area of any instance:</p>
       <pre>r = Rectangle(Point(0, 0), 10, 5)
@@ -107,7 +107,7 @@ class Rectangle:
       </program>
     </solution>
   </exercise>
-  <exercise xml:id="ch_cl2_q4">
+  <exercise label="ch_cl2_q4">
     <statement>
       <p>Write a <c>perimeter</c> method in the Rectangle class so that we can find
                 the perimeter of any rectangle instance:</p>
@@ -120,7 +120,7 @@ test(r.perimeter(), 30)</pre>
         </input>
     </program>
   </exercise>
-  <exercise xml:id="ch_cl2_q5">
+  <exercise label="ch_cl2_q5">
     <statement>
       <p>Write a <c>transpose</c> method in the Rectangle class that swaps the width
                         and the height of any rectangle instance:</p>
@@ -174,7 +174,7 @@ class Rectangle:
       </program>
     </solution>
   </exercise>
-  <exercise xml:id="ch_cl2_q6">
+  <exercise label="ch_cl2_q6">
     <statement>
       <p>Write a new method in the Rectangle class to test if a Point falls within
                 the rectangle.  For this exercise, assume that a rectangle at (0,0) with
@@ -196,7 +196,7 @@ test(r.contains(Point(-3, -3)), False)</pre>
         </input>
     </program>
   </exercise>
-  <exercise xml:id="ch_cl2_q7">
+  <exercise label="ch_cl2_q7">
     <statement>
       <p>Write a new method called <c>diagonal</c> that will return the length of the diagonal that runs
                         from the lower left corner to the opposite corner.</p>
@@ -244,7 +244,7 @@ class Rectangle:
       </program>
     </solution>
   </exercise>
-  <exercise xml:id="ch_cl2_q8">
+  <exercise label="ch_cl2_q8">
     <statement>
       <p>In games, we often put a rectangular <q>bounding box</q> around our sprites in
                 the game.  We can then do <em>collision detection</em> between, say, bombs and

pretext/Debugging/HowtoAvoidDebugging.ptx

@@ -66,7 +66,7 @@ print(final_time)
         </input>
   </program>
   <p>Hmm, when you run this example you see that something unexpected has happened. You would not realize this was an error unless you first knew what the program was supposed to do.</p>
-  <exercise xml:id="db_q_ex3_1">
+  <exercise label="db_q_ex3_1">
     <statement>
       <p>Which of the following best describes what is wrong with the  previous example?</p>
     </statement>

pretext/Debugging/KnowyourerrorMessages.ptx

@@ -34,7 +34,7 @@ print(final_time_int)
                 Python interpreter. The interpreter in activecode is limited in many ways, but it is intended for beginners,
                 including the wording chosen to describe errors.</p>
   </note>
-  <exercise xml:id="db_qex32">
+  <exercise label="db_qex32">
     <statement>
       <p>Which of the following explains why <c>wait_time_int = int(wait_time_int)</c> is an error?</p>
     </statement>

pretext/Dictionaries/Aliasingandcopying.ptx

@@ -28,7 +28,7 @@ acopy['right'] = 'left'    # does not change opposites
   <p>
     <term>Check your understanding</term>
   </p>
-  <exercise xml:id="test_question11_4_1">
+  <exercise label="test_question11_4_1">
     <statement>
       <p>What is printed by the following statements?</p>
       <program language="python">

pretext/Dictionaries/Dictionarymethods.ptx

@@ -162,7 +162,7 @@ print(inventory.get("cherries", 0))
   <p>
     <term>Check your understanding</term>
   </p>
-  <exercise xml:id="test_question11_3_1">
+  <exercise label="test_question11_3_1">
     <statement>
       <p>What is printed by the following statements?</p>
       <program language="python">
@@ -209,7 +209,7 @@ print(keylist[3])
       </choice>
     </choices>
   </exercise>
-  <exercise xml:id="test_question11_3_2">
+  <exercise label="test_question11_3_2">
     <statement>
       <p>What is printed by the following statements?</p>
       <program language="python">
@@ -255,7 +255,7 @@ print(answer)
       </choice>
     </choices>
   </exercise>
-  <exercise xml:id="test_question11_3_3">
+  <exercise label="test_question11_3_3">
     <statement>
       <p>What is printed by the following statements?</p>
       <program language="python">
@@ -284,7 +284,7 @@ print("dog" in mydict)
       </choice>
     </choices>
   </exercise>
-  <exercise xml:id="test_question11_3_4">
+  <exercise label="test_question11_3_4">
     <statement>
       <p>What is printed by the following statements?</p>
       <program language="python">
@@ -313,7 +313,7 @@ print(23 in mydict)
       </choice>
     </choices>
   </exercise>
-  <exercise xml:id="test_question11_3_5">
+  <exercise label="test_question11_3_5">
     <statement>
       <p>What is printed by the following statements?</p>
       <program language="python">

pretext/Dictionaries/Dictionaryoperations.ptx

@@ -17,7 +17,7 @@
   <p>
     <term>Check your understanding</term>
   </p>
-  <exercise xml:id="test_question11_2_1">
+  <exercise label="test_question11_2_1">
     <statement>
       <p>What is printed by the following statements?</p>
       <program language="python">

pretext/Dictionaries/Exercises.ptx

@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <exercises xml:id="dictionaries_exercises">
   <title>Exercises</title>
-  <exercise xml:id="ex_11_01">
+  <exercise label="ex_11_01">
     <statement>
       <p>Write a program that allows the user to enter a string.  It then prints a
                         table of the letters of the alphabet in alphabetical order which occur in
@@ -134,7 +134,7 @@ add_fruit(new_inventory, 'strawberries', 25)
 #  test that new_inventory['strawberries'] is now 35)
         </input>
   </program>
-  <exercise xml:id="ex_11_02">
+  <exercise label="ex_11_02">
     <statement>
       <p>Write a program called <c>alice_words.py</c> that creates a text file named
                         <c>alice_words.txt</c> containing an alphabetical listing of all the words, and the
@@ -302,7 +302,7 @@ print("The word 'alice' appears " + str(count['alice']) + " times in the book.")
 </input></program>
                 </solution>
   </exercise>
-  <exercise xml:id="ex_11_03">
+  <exercise label="ex_11_03">
     <statement>
       <p>What is the longest word in Alice in Wonderland? How many characters does it have?</p>
     </statement>
@@ -312,7 +312,7 @@ print("The word 'alice' appears " + str(count['alice']) + " times in the book.")
         </input>
     </program>
   </exercise>
-  <exercise xml:id="ex_11_04">
+  <exercise label="ex_11_04">
     <statement>
       <p>Here's a table of English to Pirate translations</p>
       <table>