Python Fundamentals

Duration: 5 min

Running Python Code

Python code can be run in two ways: interactively in the Python shell, or by running a script file. Let's start with a simple script.

# Your first Python program
print('Hello, AI!')

# Variables
name = 'Alice'
age = 25

print(f'My name is {name} and I am {age} years old')

Try it in Google Colab:

Hello, AI!
My name is Alice and I am 25 years old

Data Types and Lists

# Numbers
age = 25
height = 5.9

# Strings
name = 'Alice'

# Lists (ordered collections)
fruits = ['apple', 'banana', 'orange']
print(fruits[0])  # Access first item

# Dictionaries (key-value pairs)
person = {'name': 'Alice', 'age': 25, 'city': 'NYC'}
print(person['name'])

apple
Alice

Functions

# Define a function
def greet(name):
    return f'Hello, {name}!'

# Call the function
result = greet('Alice')
print(result)

# Function with multiple parameters
def add(a, b):
    return a + b

print(add(5, 3))

Hello, Alice!
8

Learn More Python

Ready to dive deeper? Take the Python Fundamentals course to master loops, conditionals, file handling, and more.