Chatbot - The Development Guide 2026 (Beginner + Advanced)

Explore the Python integrated development environment, a source code editor with terminals, build tools, and debuggers that help write software, find bugs, and work efficiently, with PyCharm introduced.

Shows a Python lists assignment with a zoo list of five animals, removing the third item, appending a lizard, deleting the first, and printing with slicing.

Learn Python loops with for and while statements to iterate lists, ranges, and strings, print elements, and sum values while using continue, break, and else.

Demonstrates Python dictionary operations by creating a vehicle dictionary, iterating over items, copying it, adding a new key for tires, removing mileage with pop, and printing the updated keys.

Discover object oriented programming in Python, defining objects by behavior and state and using classes to instantiate them. Explore encapsulation, abstraction, inheritance, and polymorphism.

Explore creating a turn-based battle between zombie and ogre enemies in Python, adding randomized special attacks that heal or boost attack, and implementing a battle loop.

Create and activate a Mac virtual environment for a fast API app, then install fast API and uvicorn and verify dependencies with pip list.

Master FastAPI path parameters by using static and dynamic routes, naming conventions, and the order of matching to return specific resources.

Explore FastAPI query parameters to filter books with a category param. See how /books and /books/{author}?category=science connect path and query parameters.

Learn how post requests create data in fastapi by sending a body, such as a new book with title, author, and category, to /books/create_book with app.post.

Implement a FastAPI delete request to remove a book by title using a path parameter, updating the in-memory list and reflecting changes in read all books via Swagger UI.

Explore OpenAI overview, compare ChatGPT versions 3.5 and 4, and learn to use OpenAI APIs and the Playground to build customized chatbots with large language models.

Explore OpenAI cost fundamentals, comparing ChatGPT pricing and API usage, learn token-based pricing, required balance, and how input/output tokens drive costs.

Explore OpenAI prompts and messages, including user, system, and assistant prompts, and how prompt engineering and backend arguments shape a chatbot's behavior, responses, and learning path.

Visit openai.com, log in or create an account to obtain a free trial API key, then create and name a secret key, copy it and save it for your project.

Adjust the temperature in code to control the randomness of chatbot responses, with a 0–2 range and lower values yielding predictable words. Set higher temperatures to enable more creative responses.

Learn to build a chat log and history that enables back-and-forth dialogue with a bot by dynamically appending user prompts and bot responses to a chat log using OpenAI.

Learn to build a Jinja2 based user interface in a FastAPI app by creating a layout.html, configuring templates, and rendering it through an HTML response endpoint.

Build a web user interface for a FastAPI chat bot by creating a layout.html, configuring jinja2 templates, and returning HTML responses via FastAPI.

Create a post API endpoint that accepts a text prompt, generates a 512 by 512 image with OpenAI, and displays the image URL on an HTML page.

Implement real-time streaming with WebSockets for bidirectional chat, connect the front end with JavaScript, and enhance visuals with CSS to deliver a professional, dynamic chatbot experience.

Integrate WebSocket communication with OpenAI to power a chatbot by merging existing WebSocket and OpenAI calls, sending user input through a chat log to GPT 3.5 turbo, then streaming later.

Extend the WebSocket chat by integrating OpenAI chatbot logic, log user messages, call OpenAI chat completions with GPT four, and return the bot response toward real-time streaming.

Update the navigation bar with a gray background and a green Bootstrap dropdown to switch chatbot and image generator, and add a user input inside the image form.