Python 高级教程

Welcome to the advanced Python tutorial! In this guide, we'll delve into some of the more complex and powerful features of Python. Whether you're a seasoned programmer or just starting out, this tutorial will help you take your Python skills to the next level.

高级特性

1. 生成器（Generators）

Generators are a powerful feature in Python that allow you to create iterators without the need for a class that implements the __iter__() and __next__() methods. They are particularly useful for handling large datasets or when you want to generate values on the fly.

def generate_numbers(n):
    for i in range(n):
        yield i

numbers = generate_numbers(10)
for number in numbers:
    print(number)

2. 上下文管理器（Context Managers）

Context managers are used to set up and tear down resources automatically. They are commonly used with the with statement in Python.

with open('file.txt', 'r') as file:
    content = file.read()

3. 装饰器（Decorators）

Decorators are a way to modify the behavior of functions or methods. They are often used for logging, enforcing access control, or adding functionality to existing functions.

def my_decorator(func):
    def wrapper():
        print("Something is happening before the function is called.")
        func()
        print("Something is happening after the function is called.")
    return wrapper

@my_decorator
def say_hello():
    print("Hello!")

say_hello()

扩展阅读

For more in-depth learning, check out our Python Basics Tutorial to understand the fundamentals before diving into advanced topics.

Python