updates for version 1.2

Author: learnbyexample

100_page_python_intro.md

@@ -10,7 +10,7 @@ This book is a short, introductory guide for the Python programming language. Th
     <img src="./images/py_intro.png" width="320px" height="400px" />
 </p>
 
-The book also includes exercises to test your understanding.
+The book also includes exercises to test your understanding, which is presented together as a single file in this repo — [Exercises.md](./exercises/Exercises.md)
 
 See [Version_changes.md](./Version_changes.md) to keep track of changes made to the book.
 
@@ -82,6 +82,7 @@ Twitter: https://twitter.com/learn_byexample
     * [LibreOffice Draw](https://www.libreoffice.org/discover/draw/) — title/author text
 * [pngquant](https://pngquant.org/) and [svgcleaner](https://github.com/RazrFalcon/svgcleaner) for optimizing images
 * [Warning](https://commons.wikimedia.org/wiki/File:Warning_icon.svg) and [Info](https://commons.wikimedia.org/wiki/File:Info_icon_002.svg) icons by [Amada44](https://commons.wikimedia.org/wiki/User:Amada44) under public domain
+* **Dean Clark** and **Elijah** for catching a few typos
 * [mdBook](https://github.com/rust-lang/mdBook) — for web version of the book
     * [mdBook-pagetoc](https://github.com/JorelAli/mdBook-pagetoc) — for adding table of contents for each chapter
     * [minify-html](https://github.com/wilsonzlin/minify-html) — for minifying html files

README.md

@@ -1,5 +1,16 @@
 <br>
 
+### 1.2
+
+* Updated installation section with more details
+* Added instructions for using Python from Windows CMD
+* Examples for escaping `{` and `}` characters when using f-strings
+* Corrected various typos, improved descriptions, code snippets, comments, external links, etc
+* [Exercises.md](./exercises/Exercises.md) file created to collate all the exercises in one place
+* Fun fact: total diff count for the markdown source file is exactly `100` for this update
+
+<br>
+
 ### 1.0
 
 * First version

Version_changes.md

@@ -245,7 +245,7 @@
 * Given `primes = (2, 3, 5, 7, 11)`:
     * what happens if you use `primes[5]` or `primes[-6]`?
     * what happens if you use `primes[:5]` or `primes[-6:]`?
-    * is it possible to get the same output as `primes[::-1]` by using an explicit number for `stop` value? If not, why not?
+    * is it possible to get the same output as `primes[::-1]` by using an explicit number for the `stop` value? If not, why not?
 * What do you think will happen for these cases, given `nums = (1, 2)`:
     * `a, b, c = nums`
     * `a, *b, c = nums`

exercises/Exercises.md

@@ -1,4 +1,4 @@
-with open('ip.txt', 'r', encoding='ascii') as f:
+with open('ip.txt', mode='r', encoding='ascii') as f:
     for ip_line in f:
         op_line = ip_line.rstrip('\n').capitalize() + '.'
         print(op_line)

programs/dealing_with_files/read_file.py

@@ -1,4 +1,4 @@
-with open('op.txt', 'w', encoding='ascii') as f:
+with open('op.txt', mode='w', encoding='ascii') as f:
     f.write('this is a sample line of text\n')
     f.write('yet another line\n')