Replit AI

# Getting started
# 1. Visit https://replit.com
# 2. Register an account
# 3. Create a new Repl
# 4. Select a programming language
# 5. Start coding, AI features are automatically enabled

# AI features:
# - Code completion (automatic)
# - AI chat (Cmd+K)
# - Code explanation (right-click menu)

# Code completion example
# Input:
def fibonacci(n):
    # Replit AI will suggest:
    if n <= 1:
        return n
    return fibonacci(n-1) + fibonacci(n-2)

# Input:
import flask
app = flask.Flask(__name__)
# AI suggests:
@app.route('/')
def home():
    return 'Hello, World!'

# Use Chat
# Shortcut: Cmd+K (Mac) / Ctrl+K (Windows)

# Example conversations:
# "Create a REST API that supports CRUD operations"
# "Explain what this function does"
# "Fix this error: TypeError..."
# "Add unit tests for this class"

# Use code explanation
# 1. Select code
# 2. Right-click -> "Replit AI: Explain"
# 3. Or use a shortcut
# 4. AI generates an explanation

# Example output:
# This function implements the quicksort algorithm:
# 1. Select a pivot element
# 2. Place elements smaller than the pivot on the left
# 3. Place elements larger than the pivot on the right
# 4. Recursively sort the left and right parts

# Bug detection example
# When code errors:
# TypeError: unsupported operand type(s) for +: 'int' and 'str'

# Replit AI suggests:
# "This error occurs because you tried to add an integer and a string.
# Please check the variable types and use str() or int() to convert."
# Fixed code:
# result = str(number) + text

# Deploy an application
# 1. Click the "Deploy" button
# 2. Select the deployment type (Autoscale/Reserved VM)
# 3. Configure deployment parameters
# 4. Click deploy

# Or use Replit AI:
# "Help me deploy this Flask application"
# AI will:
# - Check the code
# - Generate configuration
# - Execute the deployment

# .replit (project root) - defines how to run the project
run = "python main.py"
language = "python3"
entrypoint = "main.py"

# Replit Secrets (set via the Tools -> Secrets panel)
# Stored encrypted, exposed as process.env in your code
import os
openai_key = os.environ["OPENAI_API_KEY"]

# Toggle AI features
# Account -> Account settings -> AI:
#   - Enable/disable code completion
#   - Enable/disable AI chat
#   - Choose default chat model (where available)

Q: Is Replit AI free?
A: Basic AI features are available on the free plan with usage limits.
   Replit Core ($120/year) and Teams plans raise those limits.

Q: Which languages are supported?
A: Replit supports 50+ programming languages; AI completion and chat work
   across all of them.

Q: Is my code sent to third parties?
A: Replit processes code on its servers to provide AI features; for highly
   sensitive projects, review the privacy policy or self-host instead.

Q: Can I use my own OpenAI key?
A: You can store any API key in Replit Secrets and call the provider
   directly from your code, but built-in Replit AI uses Replit's backend.

Q: How do I deploy?
A: Click the Deploy button and pick Autoscale or Reserved VM; Replit AI
   can also generate the deployment configuration for you.