Create a simple flask app with aider

In this chat transcript, the user asks to make a simple flask app with various endpoints.

$ aider app.py
Creating empty file app.py
Added app.py to the chat

make a flask app with a /hello endpoint that returns hello world

To create a Flask app with a /hello endpoint that returns “Hello, World!”, we need to install Flask, import it, create an app instance, and define a route for the /hello endpoint. Here’s how to update the app.py file:

app.py <<<<<<< ORIGINAL ======= from flask import Flask app = Flask(__name__) @app.route('/hello') def hello(): return "Hello, World!" if __name__ == '__main__': app.run() >>>>>>> UPDATED 

Make sure to install Flask in your project environment using pip install flask before running the app.

Applied edit to app.py
Commit 414c394 aider: Added a /hello endpoint that returns “Hello, World!” to the Flask app.

add an endpoint like /add/3/5 which returns the sum of the 2 numbers

To add an endpoint like /add/3/5 that returns the sum of the two numbers, you can create a new route with two URL parameters. Update the app.py file as follows:

app.py <<<<<<< ORIGINAL @app.route('/hello') def hello(): return "Hello, World!" ======= @app.route('/add/<int:num1>/<int:num2>') def add(num1, num2): return str(num1 + num2) @app.route('/hello') def hello(): return "Hello, World!" >>>>>>> UPDATED 

Now, when you visit /add/3/5, it will return the sum of the two numbers, which is 8.

Applied edit to app.py
Commit 0872c51 aider: Added an endpoint /add/<int:num1>/<int:num2> that returns the sum of the two numbers.

add /fibonacci/X

To add a /fibonacci/X endpoint that returns the Xth number in the Fibonacci sequence, you can create a new route with a URL parameter for X and a function to calculate the Fibonacci number. Update the app.py file as follows:

app.py <<<<<<< ORIGINAL @app.route('/hello') def hello(): return "Hello, World!" ======= def fibonacci(n): if n <= 0: return "Invalid input. Please enter a positive integer." elif n == 1: return 0 elif n == 2: return 1 else: a, b = 0, 1 for _ in range(n - 2): a, b = b, a + b return b @app.route('/fibonacci/<int:x>') def fibonacci_x(x): return str(fibonacci(x)) @app.route('/hello') def hello(): return "Hello, World!" >>>>>>> UPDATED 

Now, when you visit /fibonacci/X, it will return the Xth number in the Fibonacci sequence. For example, /fibonacci/5 will return 3.

Applied edit to app.py
Commit 163fba8 aider: Added a /fibonacci/X endpoint that returns the Xth number in the Fibonacci sequence.

remove the hello endpoint

To remove the /hello endpoint, you can simply delete the corresponding route and function in the app.py file. Here’s the update:

app.py <<<<<<< ORIGINAL @app.route('/hello') def hello(): return "Hello, World!" ======= >>>>>>> UPDATED 

Now, the /hello endpoint has been removed from the Flask app.

Applied edit to app.py
Commit eab6620 aider: Removed the /hello endpoint from the Flask app.