Flask

Routes & View Functions

@app.route(path) above a function turns it into a view, whatever it returns becomes the response body.

Example: capturing part of the URL

@app.route("/greet/")
def greet(name):
    return f"Hello, {name}!"

Visiting /greet/Ada returns: Hello, Ada!

<name> inside the path captures that segment of the URL and passes it straight into the function as an argument named name, the same underlying idea as Next.js's [slug] dynamic routes or Laravel's route parameters, just Flask's specific syntax for it.

@app.route("/greet/<name>")
def greet(name):
    return f"Hello, {name}!"

Visiting /greet/Ada returns: Hello, Ada!

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