Coding with Tawfiq | Python Intro

Getting Started

Welcome to the Python Development

Python is not just a language, it’s a superpower. In this course, you’ll go from writing your first line of code to building cool projects that’ll make you say, “Wow, I did that! 😎”

Whether you’re totally new to coding or just looking to sharpen your Python skills, get ready for an epic journey filled with coding magic, challenges, and lots of fun moments.

Python Language Quick Overview

Python is a high-level, interpreted programming language used for many different purposes, from web development to scientific computing to machine learning.

Why Python is a great choice:

Easy to learn: Simple, readable syntax makes it friendly for beginners.
Versatile: Great for web apps, data analysis, AI/ML, automation, and more.
Large community: Tons of learning resources, tutorials, and Q&A support.
Rich libraries: NumPy, pandas, Matplotlib and many more to do more with less code.
Cross‑platform: Runs on Windows, macOS, and Linux with the same code.

Install Python 3 and VS Code on Windows

Install Python

Download the latest Python from python.org.
Run the installer and follow the steps.
Important: Check “Add Python to environment variables” during installation so you can run Python from anywhere.
(Optional) Choose a custom installation path if you prefer.

Note: Many Unix-based systems (Linux, macOS) come with Python preinstalled.

Tip: You can also run Python right in the browser below using the live editors — no install needed.

Try it: Check Python basics

import sys
print("Python runtime (simulated with Pyodide)")
print("Version:", sys.version)
print("3 + 4 =", 3 + 4)

Understanding Python Datatypes

In programming, data types describe the kind of data a variable can hold. Example:

num = 24  # 24 is an int so num is of class int

Since everything is an object in Python, data types are actually classes, and variables are instances of these classes.

Python Core Data Type Categories

Category	Classes	Description
Numeric	int, float, complex	Holds numeric values
String	str	Sequence of characters
Sequence	list, tuple, range	Ordered collection of items
Mapping	dict	Key–value pairs
Boolean	bool	True or False
Set	set	Unique unordered items

Variables in Python

In programming, a variable is a container (storage area) used to hold data.

number = 10

Assigning values to variables

Use the assignment operator = to assign a value to a variable.

site_name = "Power Learn Project"

Numeric Types

Python numbers: int (arbitrary length), float (double precision ~15 decimal places), and complex (rarely used early on).

Note: Python is a type‑inferred language. You don’t have to explicitly declare the type; Python infers that "Power Learn Project" is a str, so site_name is a string.

Changing the value of a variable

site_name = "Power Learn Project"

Try it: Numeric and type()

num1 = 55      # int
num2 = 5.3     # float
num3 = 2 + 3j  # complex
print(num1, type(num1))
print(num2, type(num2))
print(num3, type(num3))
print("num1 + num2 =", num1 + num2)

Assigning multiple values

a, b, c = 5, 7, "Hello world"

Rules for naming Python variables

Use letters (a–z, A–Z), digits (0–9), and underscore _. Don’t start with a digit.
Python is case‑sensitive: num and Num are different.
Avoid using Python keywords like if, True, class, etc.
Common styles: snake_case, MACRO_CASE, camelCase, CapsWords.

num = 55

List (Mutable Ordered Sequence)

Lists hold ordered items and can mix types. Defined with [ ].

Try it: Variables quick demo

# Variable basics
			number = 10
			print("number:", number, type(number))

			site_name = "Power Learn Project"
			print(site_name)

			# Change value
			site_name = "I love coding"
			print(site_name)

			# Multiple assignment
			a, b, c = 5, 7, "Hello world"
			print(a, b, c)

			# Case sensitivity
			num = 55
			Num = 510
			print(num, Num)

More Resources

Try it: List basics

languages = ["Python", "Dart", "Web", 23]
print(languages)
print("Second item:", languages[1])
languages.append("NewItem")
print("After append:", languages)
print("Slice first two:", languages[:2])

Tuple (Immutable Ordered Sequence)

Tuples use ( ) and once created cannot be modified.

Try it: Tuple basics

products = ("XBox", 499.99, "Habibi", 23)
print(products)
print("Third item:", products[2])
# Immutability demo
try:
    products[0] = "PlayStation"
except TypeError as e:
    print("Cannot modify tuple:", e)

String

Strings are sequences of characters in quotes. They support indexing and slicing.

Try it: String basics

site_name = "Power Learn Project"
print(site_name)
print("First 5 chars:", site_name[:5])
print("Upper:", site_name.upper())
print("Contains 'Learn'?:", "Learn" in site_name)

Set (Unique Unordered Collection)

Sets use { } and automatically remove duplicates. They don’t support indexing.

Try it: Set basics

student_ids = {112, 114, 117, 113, 114}
print(student_ids)
print("Length:", len(student_ids))
other = {117, 200}
print("Intersection:", student_ids & other)
print("Union:", student_ids | other)

Dictionary (Ordered Key–Value Store)

Dictionaries map keys to values. Keys must be unique.

Try it: Dictionary basics

capital_city = {"Kenya": "Nairobi", "Nigeria": "Lagos"}
print(capital_city)
print("Keys:", list(capital_city.keys()))
capital_city["Tanzania"] = "Dodoma"
print("Updated:", capital_city)
for country, city in capital_city.items():
    print(country, "=>", city)

Python Introduction

Introduction to Python

Getting Started

Welcome to the Python Development

Python Language Quick Overview

Install Python 3 and VS Code on Windows

Try it: Check Python basics

Understanding Python Datatypes

Python Core Data Type Categories

Variables in Python

Assigning values to variables

Numeric Types

Changing the value of a variable

Try it: Numeric and type()

Assigning multiple values

Rules for naming Python variables

List (Mutable Ordered Sequence)

Try it: Variables quick demo

More Resources

Try it: List basics

Tuple (Immutable Ordered Sequence)

Try it: Tuple basics

String

Try it: String basics

Set (Unique Unordered Collection)

Try it: Set basics

Dictionary (Ordered Key–Value Store)

Try it: Dictionary basics

More Resources