Python Level 2 Course Material

Class Videos

1. Introduction
2. How to index strings with positive and negative numbers
3. String slicing: start, stop, step size in string slicing, with examples
4. String slicing and plus operator to jumble even and odd letters
5. Modulo operator to determine even or odd string length
6. What is the return statement in context of Python functions?
7. How to slice strings with a negative step size?
8. How to use string slicing to reverse a given string?
9. Split() method and reverse function to reverse every word
10. How to use string slicing to swap the first and second halves of a string
11. How to decode the encoded messages in the Secret Messages activity
12. A bonus encoding and decoding — swap middle and reverse combined

Enhancement Ideas/Videos

Bonus Encodings/Decodings
1. Generalized EVEN/ODD swap with N-letter chunks
Encoding, Decoding

2. Generalized SWAP MIDDLE with N-chunks in the message
Encoding, Decoding

3. Encoding messages by lumping every Nth letter (Row Column transpose)
Encoding, Decoding

4. Arbitrary column order in the row/column transpose encoding
Encoding, Decoding

5. Secret Messages using Rail Fence cipher with N-rails
Encoding, Decoding

Interesting Presentation of Secret Messages
1. Presenting Secret Messaged in 5 letter groups
Encoding, Decoding

Class Material and Notes

Class Notes ,

Class Project (GITHUB)

• String slicing with positive and negative values
• Functions, return statement

Independent Activity

Activity and Marking Criteria

Create a REPL (python) which takes a string and write functions to slice the string in order to create encoded messages. Also create the corresponding decoding functions.

Leaderboard

Class Videos

1. Introduction
2. How to build a Caesar Cipher?
3. Why and how to use the modulo operator in the Caesar cipher?
4. Making Caesar cipher work for capital letters and numbers
5. How to decode a Caesar cipher?
6. Our encryption technology goes into wrong hands!
7. How to generate random integers using random.randint()
8. How to build the enemy encoder using the functions already built?
9. Cracking the enemy code when the transposition is set to ‘No Change’
10. Using break statement to prematurely end the for loop
11. Cracking enemy code when the transposition encoder is set to even odd swap
12. Cracking the enemy code even when the encoder is randomly chosen

Class Material and Notes

Class Notes
Class Project (GITHUB)

Key Learning Objectives

1. encoding/decoding using caesar cipher
2. Creating an encoder
3. break statement

Bonus Videos

More Substitution Ciphers
1. Atbash Cipher (Encoding and Decoding)

2. Vigenere Cipher – A generalization of the Caesar Cipher
Encoding, Decoding

3. Beaufort Cipher – A variation of the Vigenere Cipher
Encoding, Decoding

Cracking Enemy Code
1. Equal Length Enemy Headers randomly chosen from a list
Basic but not very flexible code,
A more flexible and useful code

2. Unequal Length Enemy Headers randomly chosen from a list

3. Enemy headers placed anywhere in the message — Excellent practice in slicing

4. Enemy Headers contained in each other? Did the Enemy trick us?

Independent Activity

Activity and Marking Criteria

Leaderboard

Class Videos

1. Introduction
2. Getting User’s inputs for the birthday countdown: year, month, day of birth
3. How to import datetime module, what does import mean?
4. Create the datetime object using the year, month and day of birth
5. Getting a better understanding of datetime objects
6. Using lists and weekday() method to determine the weekday of birth
7. Creating a datetime object to hold the current time
8. Determining if the next birthday will come this year or in the next year
9. A closer look at the syntax of the if-else condition
10. Determining the weekday for the next birthday
11. Starting to think about creating the birthday countdown!
12. Understanding the timedelta object
13. The logic for converting total seconds to hours, mins, seconds
14. What are modulo (%) and floor division (//) operators in Python?
15. Modulo and floor division operators to convert seconds to hours, minutes and seconds?
16. Use divmod () method to convert total seconds to hours, minutes and seconds?
17. Create a dynamic countdown towards next birthday!
18. How to use ‘\r’ to print the birthday countdown on the same line?
19. Common problems when using ‘\r’ for printing the dynamic countdown!

Bonus Videos

1. Try/except statements for a graceful exit after invalid inputs
2. How to prevent the user from giving a birth date that is in future?
3. How to tell the user’s age based on the birth date provided?
4. Using string split method and list indexing to extract hours, minutes and seconds
5. How to tell the user the weekdays of all the birthdays till now?
6. How to handle the special day of 29th February?

Independent Activity

Activity and Marking Criteria
Bonus Ideas

Create a REPL (python) which asks for the player’s birthday and creates a countdown towards the next birthday.

Leaderboard

Project Showcase

Class Material and Notes

Class Notes
Class Project (GITHUB)

Key Learning Objectives

1. Datetime object
2. Dynamic printing

Class Videos

1. Introduction and Learning Objectives
2. Getting started
3. Getting the head to move
4. Getting the TURTLE head to turn with ts.onkey()
5. Creating the foods and storing in a list
6. Determining if the food is being eaten?
7. A closer look at t.distance()
8. How to set the threshold for the touching conditions?
9. How to make the first segment of tail move along with the SNAKE head?
10. Making all the segments move along with the SNAKE Head
11. An alternative implementation based on the Snake Game from Scratch
12. Displaying the SCORE as the Snake eats the food
13. Getting the game to END
14. Displaying the total number of steps taken to complete the mission
15. Relating to the TRAVELING SALESMAN problem

Class Material

Class Notes,
Class Project (GITHUB)

Key Learning Objectives

1. Key bindings in turtle using ts.onkey()
2. Creating and manipulating Lists of Turtles
3. Multiple Turtles in the same project.
4. Connection to an important business problem called the Traveling Salesman Problem.

Bonus Videos

Playing Boundary
Square Shape, Circle Shape

Enhancements inside the playing area
An initial cool off time
Poison Fruit (Must not eat)
Obstacle (Stay away from this)
Snake dies on eating own tail (Self Goal)
Secret passages and going across border
Bouncing off border

Smart Placement of foods
No two foods come too close to each other

Specific Orders of Eating
Snake must eat foods in a specific order
Computing the nearest neighbor order (Traveling Salesman Problem)
Highlighting the nearest neighbor order at all times

Snake in an AUTO Mode
Snake moves around the finds the food itself, by going to the nearest neighbor.

Fancy Shape for snake head
Give a fancy shape to the snake head

Independent Activity

Activity & Marking Criteria

Implement a Hungry snake game in Python Turtle

Leaderboard

Project Showcase

Class Material (Live Quiz)

Key Learning Objectives

1. Revise the concepts covered so far with an interactive quiz.  
2. Provide students a chance to consolidate their learning and build an independent project of their choice.

Independent Activity

Activity and Marking Criteria

Leaderboard

Class Videos

1. Introduction and Learning Objectives
2. Game Rules
3. Creating a Deck of Cards
4. Shuffling the Deck of Cards
5. Doing the toss!
6. Dealing the cards to the two players using list slicing
7. Understanding the game scheme: A nested while loop
8. Getting both players to play a card using the pop method
9. Checking for a winner in a move
10. The difference between append and extend methods for lists in Python
11. Setting up the WAR
12. Four different methods to delete items from a list in Python
13. Develop the outer loop
14. Print statements to display the list status and interpreting the results

15. Determine the final winner

Class Material and Notes

Class Notes
Class Project (GITHUB)

Key Learning Objectives

1. nested while loop
2. random.choice() and random.shuffle
3. Deleting items from a list

Bonus Videos

Enhance the Toss
Both players pick up 1 card
Winner by a combination of suit and value
Both players pick up multiple cards

Joker
Add Joker card to the gameplay

Innovative ways to deal cards
Using List Slicing and Loops
Incorporating Randomness

WAR Game Variants
Progressive WAR
Speed WAR
WAR played with suits

Active Role for player and computer
Player chooses from the first three cards
Computer chooses from the first three cards

Independent Activity

Activity and Marking Criteria

Leaderboard

Project Showcase

Class Videos

1. Introduction and Learning Objectives
2. Getting started with Tkinter
3. Customizing the Tkinter window
4. The widgets we will use; Adding the canvas widget
5. Methods of the Canvas widget with examples
6. Drawing the first line (The scratch line) on the Canvas
7. Adding the dropdown menus to select the stations
8. Adding the CALCULATE FARE button and the FARE DISPLAY label widgets
9. Adding the function for the button command and the pass statement
10. Calculating the fare when start and stop stations are on one line
11. Adding the second (Python) line to the network map and dropdown menus
12. Computing the fare with two lines and an interchange station
13. Challenges in computing fares with more than two lines

Class Material & Notes

Class Notes, Class Project (GITHUB)

Key Learning Objectives

1. Introduction to Tkinter. 
2. Basic Widgets
3. pack() placement of widget

Bonus Videos

Flexible Placement of Lines
Use a function to create inclined lines
Create turns on the lines
Place Labels in a flexible manner

Fare Enhancements
Base fare + per station fare
Surcharge for changing lines
Different fares on the two lines

GUI Enhancements for Discounts
Checkboxes to select discount options
RadioButtons to select Age Category

Independent Activity

Activity and Marking Criteria

Create a REPL (Tkinter, with turtle) which highlights a metro map and gives user a choice of starting and ending stations for calculation of the fare. .

Leaderboard

Project Showcase

Class Videos

1. Introduction and Learning Goals
2. Understanding the grid geometry manager
3. Adding the Expression Label and the Entry label
4. Adding rows of buttons
5. What does the ‘sticky’ option mean?
6. The high level architecture — 4 types of buttons, 2 labels
7. Getting ONE number button to work
8. Making all the number buttons work using lambda functions
9. A brief introduction to lambda functions in Python
10. Getting the operator buttons to work using lambda functions
11. Getting the CLEAR button to work
12. Getting the EQUALS button to work using the EVAL statement
13. Handling errors using try/except statement
14. Comparing our calculator app with the standard windows app, and several enhancement ideas

Class Material and Notes

Class Notes , Class Project (GITHUB)

Key Learning Objectives

1. grid placement in Tkinter
2. lambda functions

Bonus Videos

1. Discussion on a Flexible Layout
2. Placing the Number Buttons using a for loop
3. Placing the Operators Buttons using a for loop
4. A new/different layout for the Calculator Buttons

Independent Activity

Activity and Marking Criteria

Create a REPL (python, with Tkinter) which implements a basic calculator.

Leaderboard

Project Showcase

Class Videos

1. Introduction and Learning Objectives
2. Getting started with Tkinter
3. Getting a large list of words and picking up a random word
4. Planning the GUI — Creating Entry box and button using the grid manager
5. Determining if the guessed word is a valid word
6. Creating Labels for the letters of valid words using the grid manager
7. Placing every new guess on a new row using the global keyword
8. A closer look at variable scopes and the global keyword
9. Giving color to every label according to the game rules
10. Understanding the problem with repeated letters in the guessed word
11. Analysis of the repeated letters problem and its solution
12. Implementing the solution in code
13. Generalizing the solution to the repeated letters problem using lists
14. Implementing the ending conditions in the Wordle game

Class Material

Class Notes, Class Project (GITHUB)

5 letter words

Key Learning Objectives

1. Importing data from files
2. global statement

Bonus Videos

Enhancing the GUI
1. Pre-Created Label Boxes on the GUI
2. Showing Already Guessed letters graphically

Help and Hint
3. Help and Hint Buttons on a new Frame
4. Developing the HELP button functionality
5. Developing the HINT button functionality

Virtual Keyboard
6. Creating a VIRTUAL KEYBOARD on a new Frame
7. Adding Clear and Backspace buttons to the VIRTUAL KEYBOARD
8. Giving Colors to the VIRTUAL KEYBOARD buttons according to Wordle rules
9. Updating the labels LIVE when letters are guessed from the VIRTUAL keyboard
10. No Entry Box, Only Virtual Keyboard on the GUI

Timer on the GUI
11. Adding a TIMER to the GUI

Independent Activity

Activity and Marking Criteria

Create a REPL (python, with Tkinter) which implements a basic WORDLE game.

Leaderboard