Notes »

python-intro

Sure, here’s a cheat sheet for Lesson 1: Introduction to Python:

Basics:

  • Python: High-level, interpreted programming language known for its simplicity and readability.
  • Jupyter Notebook: Interactive environment for running Python code.

Syntax:

  • Variables: Containers for storing data. Example: x = 5
  • Data Types:
    • Integer: int, Example: 5
    • Float: float, Example: 5.0
    • String: str, Example: 'hello'
    • Boolean: bool, Example: True
  • Arithmetic Operators:
    • Addition: +
    • Subtraction: -
    • Multiplication: *
    • Division: /
    • Exponentiation: **
    • Modulus: %
  • Printing: Displaying outputs. Example: print("Hello, world!")

Example Code:

# Variables
x = 5
y = 3.14
name = "Alice"
is_valid = True

# Arithmetic Operations
result = x + y
print("Result:", result)

# Printing
print("My name is", name)

Notes:

  • Python is dynamically typed, meaning you don’t need to declare variable types explicitly.
  • Use # for comments.
  • Python uses indentation for code blocks instead of braces {} like in other languages.