Python AI - Simply Explained Hands-On

Prepare your tools and environment to start programming in Python. Explore basic Python functions—variables, user input, and random number generators—and build a command line game to apply what you learn.

Learn to take user input from the command line with the input function, store values in variables from prompts, and print the results.

Explore Python programming statements and learn conditional statements to add decision making capabilities to your programs, enabling more complex code.

Discover how if statements in Python control car lights, using true/false conditions, the double equals operator, indentation, and simple prints to show headlight and tail light status.

Convert user input to an integer and use if/elif/else to map grade thresholds (90, 85, 80, 75, 70, 65, 60, below 60) to letter grades.

Build on your Python basics by organizing variables with lists, like arrays. Use a shopping cart analogy to add and remove groceries as you explore lists.

Learn how to add elements to Python lists using the append method, including a runtime example with a shopping cart where user input items are appended and displayed.

Explore removing elements from lists in Python by name using remove, removing the last item with pop, and clearing with clear, illustrated through a shopping cart.

Learn to use Len to get the length of a list, check if the shopping cart is empty, and print a message when its length is zero.

Explore the tuple data type, its immutability, and indexing to access elements. See tuples in OpenCV for coordinates and colors, and note why they are less used than lists.

Learn how finite state machines organize programs with multiple states like init, walk, attack, and defend, using keyboard-driven transitions and a simple Python implementation.

discover how to use Python for loops to print numbers from zero to 100 and to iterate over lists, updating elements in place with indices, range, and len.

Learn to combine list and range iteration using Python's enumerate to print each car with its index, replacing manual indexing with a counter and item.

Learn how Python list comprehension replaces for loops to build lists from strings and ranges, including filtering spaces and specific letters, and selecting odd or even numbers.

Learn to translate image pixels with a simple Python function, shifting x and y coordinates to move a 4x4 image within a 16x16 screen using nested for loops.

Move from the main Python space to the function space and organize code with functions like shelves, improving readability for other programmers.

Learn to build a two-player ping pong game with Python Turtle. Create a blue 800x600 window, add paddles and a bouncing ball, and score when ball reaches the opponent side.

Define paddle one as a turtle object, set white square shape, size, and position at -350,0 with pen up, then copy for paddle two at +350,0 and enable movement.

Learn paddle motion by implementing two-player controls for up, down, left, and right movements using a step-based speed and boundary clamping to keep paddles on screen.

Create a green circle ball, define its movement with dx and dy, and implement boundary checks to bounce it inside the window, setting up paddle collision.

Implement two-player scoring for a simple ping-pong game: track and display each player's score, update on boundary hits, clear and redraw, then reset the ball and reverse its direction.

Explore dictionaries as a data structure that stores keys and values, offering a more organized alternative to lists for building small databases to store information.

Define dictionaries with name and age, access values by key, print keys, and compare dictionaries to lists to highlight their structure.

Explore using dictionaries with list values to build a mini database in Python, storing names and ages, and retrieve them by key and index.

Add keys and values to an empty dictionary at runtime, using update for replacements and append for list-valued entries, as demonstrated with names and ages.

Learn to delete a dictionary key safely by checking key existence before deletion, using the names key to prevent key errors and runtime crashes.

Learn to delete a single list element within a dictionary by locating its index with a search, removing that index from all keys, and using loops to iterate dictionaries.

Iterate over the dictionary keys with db.keys, delete the corresponding index for each key, then print and unpack the values with a nested for loop to access individual elements.

Move beyond beginners by mastering exceptions to catch errors early, prevent crashes, and ensure a smooth user experience as you advance in Python AI hands-on learning.

Identify and catch specific exception types in Python, such as zero division error and name error, using try and except to prevent crashes and keep the program running.

Learn how to use try, except, else, and finally in Python to create a folder and five files, handle existing folders, and print status messages.

Create a custom exception by inheriting from exception, raise it for conditions like element does not exist or first element is smaller than second, and handle with try/except and else.