update edition

Author: dham

doc/source/0_preface.rst

@@ -126,8 +126,8 @@ it's better to watch the video *after* reading the relevant section.
     The videos are marked in the text by a blue box at the right hand side,
     containing the video number. This corresponds to the list of links at:
 
-        `https://object-oriented-python.github.io/edition1/videos.html
-        <https://object-oriented-python.github.io/edition1/videos.html>`__
+        `https://object-oriented-python.github.io/edition2/videos.html
+        <https://object-oriented-python.github.io/edition2/videos.html>`__
 
 The exercises
 .............
@@ -141,8 +141,8 @@ correct responses to a range of inputs. Tests like this provide immediate
 feedback and enable you to know how you are doing. Links to the skeleton code
 for each chapter are provided at:
 
-        `https://object-oriented-python.github.io/edition1/exercises.html
-        <https://object-oriented-python.github.io/edition1/exercises.html>`__
+        `https://object-oriented-python.github.io/edition2/exercises.html
+        <https://object-oriented-python.github.io/edition2/exercises.html>`__
 
 
 Conventions employed

doc/source/10_further_object-oriented_features.rst

@@ -570,7 +570,7 @@ Exercises
 .. only:: not book
 
     Using the information on the `book website 
-    <https://object-oriented-python.github.io/edition1/exercises.html>`__
+    <https://object-oriented-python.github.io/edition2/exercises.html>`__
     obtain the skeleton code for these exercises.
 
 .. only:: book
@@ -613,5 +613,5 @@ Exercises
     in Python, so diving in and reading the source code is often an option if
     you really want to know how some part of the language works.
 
-.. [#exercise_page] `https://object-oriented-python.github.io/edition1/exercises.html
-    <https://object-oriented-python.github.io/edition1/exercises.html>`__
+.. [#exercise_page] `https://object-oriented-python.github.io/edition2/exercises.html
+    <https://object-oriented-python.github.io/edition2/exercises.html>`__

doc/source/2_programs_in_files.rst

@@ -1025,7 +1025,7 @@ already familiar with Git and GitHub then you will also need to work through
     .. only:: not book
 
         Using the information on the `book website
-        <https://object-oriented-python.github.io/edition1/exercises.html>`__
+        <https://object-oriented-python.github.io/edition2/exercises.html>`__
         create your chapter 2 exercise repository for this module and clone it
         into your working folder. The exercise repository just contains a
         :file:`README` and some tests. Your job in the following exercises will be
@@ -1106,5 +1106,5 @@ already familiar with Git and GitHub then you will also need to work through
 .. [#book_repo] `https://github.com/object-oriented-python/object-oriented-programming
     <https://github.com/object-oriented-python/object-oriented-programming>`__
 
-.. [#exercise_page] `https://object-oriented-python.github.io/edition1/exercises.html
-    <https://object-oriented-python.github.io/edition1/exercises.html>`__
+.. [#exercise_page] `https://object-oriented-python.github.io/edition2/exercises.html
+    <https://object-oriented-python.github.io/edition2/exercises.html>`__

doc/source/3_objects.rst

@@ -965,7 +965,7 @@ Exercises
 .. only:: not book
 
     Using the information on the `book website 
-    <https://object-oriented-python.github.io/edition1/exercises.html>`__
+    <https://object-oriented-python.github.io/edition2/exercises.html>`__
     obtain the skeleton code for these exercises. The skeleton code contains a
     :mod:`polynomial` package with a version of the :class:`Polynomial` class.
 
@@ -1036,5 +1036,5 @@ Exercises
 
 .. rubric:: Footnotes
 
-.. [#exercise_page] `https://object-oriented-python.github.io/edition1/exercises.html
-    <https://object-oriented-python.github.io/edition1/exercises.html>`__
+.. [#exercise_page] `https://object-oriented-python.github.io/edition2/exercises.html
+    <https://object-oriented-python.github.io/edition2/exercises.html>`__

doc/source/4_style.rst

@@ -1258,7 +1258,7 @@ Exercises
 
     The skeleton code on GitHub for this chapter's exercises contains a package
     :mod:`life` which implements Conway's Game of Life. Using the information on the `book website 
-    <https://object-oriented-python.github.io/edition1/exercises.html>`__
+    <https://object-oriented-python.github.io/edition2/exercises.html>`__
     obtain the skeleton code for these exercises. Clone the repository into
     your working folder and install the package in editable mode.
 
@@ -1390,5 +1390,5 @@ six oscillating blinkers:
           users. However the PEPs having to do with style have wider
           significance.
 
-.. [#exercise_page] `https://object-oriented-python.github.io/edition1/exercises.html
-    <https://object-oriented-python.github.io/edition1/exercises.html>`__
+.. [#exercise_page] `https://object-oriented-python.github.io/edition2/exercises.html
+    <https://object-oriented-python.github.io/edition2/exercises.html>`__

doc/source/5_abstract_data_types.rst

@@ -839,7 +839,7 @@ Exercises
 .. only:: not book
 
     Using the information on the `book website 
-    <https://object-oriented-python.github.io/edition1/exercises.html>`__
+    <https://object-oriented-python.github.io/edition2/exercises.html>`__
     obtain the skeleton code for these exercises. You will also need to install
     the pytest-timeout package.
 
@@ -963,5 +963,5 @@ Exercises
 
 .. rubric:: Footnotes
 
-.. [#exercise_page] `https://object-oriented-python.github.io/edition1/exercises.html
-    <https://object-oriented-python.github.io/edition1/exercises.html>`__
+.. [#exercise_page] `https://object-oriented-python.github.io/edition2/exercises.html
+    <https://object-oriented-python.github.io/edition2/exercises.html>`__

doc/source/6_exceptions.rst

@@ -838,7 +838,7 @@ Exercises
 .. only:: not book
 
     Using the information on the `book website 
-    <https://object-oriented-python.github.io/edition1/exercises.html>`__
+    <https://object-oriented-python.github.io/edition2/exercises.html>`__
     obtain the skeleton code for these exercises.
 
 .. only:: book
@@ -904,5 +904,5 @@ Exercises
 .. [#function] "Function call" here includes :term:`method` calls and
                operations implemented using a :term:`special method`.
 
-.. [#exercise_page] `https://object-oriented-python.github.io/edition1/exercises.html
-    <https://object-oriented-python.github.io/edition1/exercises.html>`__
+.. [#exercise_page] `https://object-oriented-python.github.io/edition2/exercises.html
+    <https://object-oriented-python.github.io/edition2/exercises.html>`__

doc/source/7_inheritance.rst

@@ -778,7 +778,7 @@ Exercises
 .. only:: not book
 
     Using the information on the `book website 
-    <https://object-oriented-python.github.io/edition1/exercises.html>`__
+    <https://object-oriented-python.github.io/edition2/exercises.html>`__
     obtain the skeleton code for these exercises.
 
 .. only:: book
@@ -866,5 +866,5 @@ Exercises
 
 .. rubric:: Footnotes
 
-.. [#exercise_page] `https://object-oriented-python.github.io/edition1/exercises.html
-    <https://object-oriented-python.github.io/edition1/exercises.html>`__
+.. [#exercise_page] `https://object-oriented-python.github.io/edition2/exercises.html
+    <https://object-oriented-python.github.io/edition2/exercises.html>`__

doc/source/8_debugging.rst

@@ -869,7 +869,7 @@ Exercises
     The exercises work a little differently this week, because the objective is
     not to write code but to practice debugging techniques. The information on
     the `book website
-    <https://object-oriented-python.github.io/edition1/exercises.html>`__
+    <https://object-oriented-python.github.io/edition2/exercises.html>`__
     points not just to the skeleton code but also to an online quiz which will
     provide instant feedback on the questions below. You should access the
     skeleton code and then work through the quiz questions.
@@ -949,5 +949,5 @@ Exercises
 .. [#ufl] `https://github.com/object-oriented-python/ufl
     <https://github.com/object-oriented-python/ufl>`__
 
-.. [#exercise_page] `https://object-oriented-python.github.io/edition1/exercises.html
-    <https://object-oriented-python.github.io/edition1/exercises.html>`__
+.. [#exercise_page] `https://object-oriented-python.github.io/edition2/exercises.html
+    <https://object-oriented-python.github.io/edition2/exercises.html>`__

doc/source/9_trees_and_directed_acyclic_graphs.rst

@@ -1189,7 +1189,7 @@ Exercises
 .. only:: not book
 
     Using the information on the `book website 
-    <https://object-oriented-python.github.io/edition1/exercises.html>`__
+    <https://object-oriented-python.github.io/edition2/exercises.html>`__
     obtain the skeleton code for these exercises. The exercises also make use
     of the book repository which you installed in :ref:`in Chapter 2
     <course_repo>`.
@@ -1252,5 +1252,5 @@ Exercises
     also possible, and is a key feature of `the Julia programming language
     <https://julialang.org>`_. 
 
-.. [#exercise_page] `https://object-oriented-python.github.io/edition1/exercises.html
-    <https://object-oriented-python.github.io/edition1/exercises.html>`__
+.. [#exercise_page] `https://object-oriented-python.github.io/edition2/exercises.html
+    <https://object-oriented-python.github.io/edition2/exercises.html>`__