How to Implement Message Visibility Timeout Renewal in Python

import time
import uuid

class Message:
    def __init__(self, body, visibility_timeout=30):
        self.body = body
        self.visibility_timeout = visibility_timeout
        self.receipt_handle = str(uuid.uuid4())
        self.received_at = time.time()
        self.deleted = False

    def is_visible(self):
        return self.deleted or time.time() >= self.received_at + self.visibility_timeout

    def renew_timeout(self, new_timeout):
        self.visibility_timeout = new_timeout
        self.received_at = time.time()
        return self.receipt_handle


if __name__ == "__main__":
    msg = Message("Hello, world!", visibility_timeout=2)
    print(f"Initial receipt handle: {msg.receipt_handle}")
    print(f"Visible initially: {msg.is_visible()}")

    time.sleep(1)
    print(f"Visible after 1s: {msg.is_visible()}")

    msg.renew_timeout(3)
    print(f"Renewed timeout to {msg.visibility_timeout}s")
    print(f"Visible after renewal: {msg.is_visible()}")

    time.sleep(2)
    print(f"Visible 2s after renewal: {msg.is_visible()}")