Book Image

Advanced Python Programming

By : Dr. Gabriele Lanaro, Quan Nguyen, Sakis Kasampalis
Book Image

Advanced Python Programming

By: Dr. Gabriele Lanaro, Quan Nguyen, Sakis Kasampalis

Overview of this book

This Learning Path shows you how to leverage the power of both native and third-party Python libraries for building robust and responsive applications. You will learn about profilers and reactive programming, concurrency and parallelism, as well as tools for making your apps quick and efficient. You will discover how to write code for parallel architectures using TensorFlow and Theano, and use a cluster of computers for large-scale computations using technologies such as Dask and PySpark. With the knowledge of how Python design patterns work, you will be able to clone objects, secure interfaces, dynamically choose algorithms, and accomplish much more in high performance computing. By the end of this Learning Path, you will have the skills and confidence to build engaging models that quickly offer efficient solutions to your problems. This Learning Path includes content from the following Packt products: • Python High Performance - Second Edition by Gabriele Lanaro • Mastering Concurrency in Python by Quan Nguyen • Mastering Python Design Patterns by Sakis Kasampalis
Table of Contents (41 chapters)
Title Page
About Packt

The asyncio module

As you saw in the previous chapter, the asyncio module provides an easy way to convert a sequential program to an asynchronous one. In this section, we will be discussing the general structure of an asynchronous program, and subsequently, how to implement the conversion from a sequential to an asynchronous program in Python.

Coroutines, event loops, and futures

There are a few common elements that most asynchronous programs have, and coroutines, event loops, and futures are three of those elements. They are defined as follows:

  • Event loops are the main coordinators of tasks in an asynchronous program. An event loop keeps track of all of the tasks that are to be run asynchronously, and decides which of those tasks should be executed at a given moment. In other words, event loops handle the task switching aspect (or the execution flow) of asynchronous programming.
  • Coroutines are a special type of function that wrap around specific tasks, so that they can be executed asynchronously...