diff --git a/Builds/introduction.zip b/Builds/introduction.zip
index 14581d7b3d959fa5d8c72f3bfbbffcc092b0298e..cc789fd630a60a725fd367a116db24764a2457ec 100644
Binary files a/Builds/introduction.zip and b/Builds/introduction.zip differ
diff --git a/UNL SOFT Introduction to Python/Classes/Constructors/task.html b/UNL SOFT Introduction to Python/Classes/Constructors/task.html
index 743d75f197e7c2bd62144285c8b1a9d863e0d86f..57abb18e6ca8a8144c4f49bbec4e69392dd3ddf7 100644
--- a/UNL SOFT Introduction to Python/Classes/Constructors/task.html	
+++ b/UNL SOFT Introduction to Python/Classes/Constructors/task.html	
@@ -5,7 +5,7 @@
 <blockquote>
     <code>class Book(object):</code><br>
     <code>&nbsp;&nbsp;&nbsp;&nbsp;def __init__(self, comment):</code><br>
-    <code>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;print('Created a book with the comment {comment}'.format(comment=comment))</code>
+    <code>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;print(f'Created a book with the comment {comment}')</code>
 </blockquote>
 <p>prints a line whenever a book object is created.  The call to the constructor would look like this:</p>
 <blockquote><code>a_book = Book('(400 pages)')</code></blockquote>
diff --git a/UNL SOFT Introduction to Python/Loops/Break and Else/task.html b/UNL SOFT Introduction to Python/Loops/Break and Else/task.html
index 29431cdb584b6692eedf80a6eeb012814e7af3a0..be5a8e70809b12593a546aaee12fb101476afa0b 100644
--- a/UNL SOFT Introduction to Python/Loops/Break and Else/task.html	
+++ b/UNL SOFT Introduction to Python/Loops/Break and Else/task.html	
@@ -5,10 +5,10 @@
     it, but need additional code in case they never find what they are looking for.  For example:</p>
 <blockquote><code>for i in range(10):</code><br>
     <code>&nbsp;&nbsp;&nbsp;&nbsp;if i ** 3 == 500:</code><br>
-    <code>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;print('The cube root of 500 is {i}.'.format(i=i))</code><br>
+    <code>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;print(f'The cube root of 500 is {i}.')</code><br>
     <code>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;break</code><br>
     <code>else:</code><br>
-    <code>&nbsp;&nbsp;&nbsp;&nbsp;print('The cube root of 500 is not an integer between 0 and 9.'.format(i=i))</code>
+    <code>&nbsp;&nbsp;&nbsp;&nbsp;print('The cube root of 500 is not an integer between 0 and 9.')</code>
 </blockquote>
 <p>Fill in the placeholders so that the actual outputs match the expected outputs.</p>
 </html>