Python teaching materials

Lesson notebooks, worksheets and small projects for teaching Python to beginners, from the first print to classes, linked lists and Big O notation.

Instructor: Ioannis Tsioulis

The notebooks open in Google Colab with one click, so there is nothing to install. The worksheets are PDF or text files; where answers exist, they are linked in the last column.

Looking for a complete course? This material was rewritten, with full explanations, as From Zero to Data Structures and Algorithms in Python on my website.

1. First steps

Material	What it covers	Run / answers
lesson0.ipynb	The first notebook: print, types, variables, arithmetic, input, a first look at lists and None	Open in Colab
python task 1.txt	Worksheet: printing, variables, lists and input	Answers: Open in Colab · file

2. Decisions

Material	What it covers	Run / answers
lesson if, else....ipynb	Five short if / else programs: even or odd, age, comparing two numbers, grades	Open in Colab
lesson0 (2).ipynb	More worked examples with if, elif and else	Open in Colab
lesson1.ipynb	Exercises with solutions: age checker, pass or fail, grading system, and the first functions	Open in Colab
task 2.pdf	Worksheet: temperature check, largest of three, ranges, ticket price, password check	Answers: Open in Colab · file

3. Functions

Material	What it covers	Run / answers
lesson2.ipynb	Functions with parameters and return values; a rock, paper, scissors game	Open in Colab
Function Practice.pdf	Worksheet: ten function exercises on lists and strings, with hints	Answers: Open in Colab · file

4. Loops

Material	What it covers	Run
lesson3 (2).ipynb	for and while explained step by step: range, break, loop else, nested lists, zip, primes, an ATM simulation	Open in Colab
lesson3.ipynb	Looping over lists and strings, list methods, while loops with input	Open in Colab
lesson4.ipynb	Loop practice with solutions: filtering, sums, a guessing game, counting digits	Open in Colab
Python Loop Exercises for Beginners.pdf	Worksheet: loop exercises 1 to 15
Python Loop Exercises for Beginners - part2.pdf	Worksheet: loop exercises 16 to 25, loops combined with if

5. Mixed practice

Material	What it covers	Run / answers
5. python task.pdf	Worksheet: divisibility checker, password validator, calculator, recursion, menus, primes	Answers: Open in Colab · file

6. Classes and objects

Material	What it covers	Run
Classes and Objects.ipynb	Introduction to classes and objects, with five guided exercises	Open in Colab
Classes and Objects exercises.pdf	Worksheet: more class exercises (shape, clock, counter, book and others)

7. Algorithms and complexity

Material	What it covers	Run
Understanding Big O Notation with Python.ipynb	Big O notation with timing experiments, from O(1) upwards	Open in Colab
Determining Big O Complexity and Validating with Experiments.pdf	Task sheet: analyse given algorithms, then check your answer by measuring
O.pdf	Worked Big O examples (in Greek)
Time.ipynb	Timing sorting algorithms and plotting the results	Open in Colab
T.ipynb	Bubble sort with early exit, timed	Open in Colab
linked_list.ipynb	Singly linked lists: how they differ from a Python list, the core operations and their cost	Open in Colab

8. Small projects

Material	What it covers	Run / solution
Report.pdf	Assignment brief: build a to-do list application and write a short design report	Solution: Open in Colab · file
ΑΤΜ State Machine.ipynb	An ATM written as a state machine (in Greek)	Open in Colab
socket.ipynb	A number guessing game over a TCP connection with socket (comments in Greek)	Open in Colab

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© Ioannis Tsioulis. Prepared for educational use.