Event Loop

The event loop is a programming construct that waits for events to happen and then dispatches them to an event handler. An event can be a user clicking on a UI button or a process initiating a file download. At the core of asynchronous programming, sits the event loop. The concept isn't novel to Python. In fact, many programming languages enable asynchronous programming with event loops. In Python, event loops run asynchronous tasks and callbacks, perform network IO operations, run subprocesses and delegate ...