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📚 Python Lambda Functions 🌟

发布时间:2025-03-28 13:00:03来源:

Hello, coders! Today, let's talk about Python’s `lambda` functions, which are small anonymous functions that can be defined using the `lambda` keyword. 💻✨ These functions are super useful when you need a simple function for a short period and don’t want to formally define it with `def`.

For example, imagine sorting a list of tuples based on the second element. You could use a lambda function like this:

```python

points = [(1, 2), (3, 1), (5, 0)]

sorted_points = sorted(points, key=lambda x: x[1])

```

Lambda functions are concise and perfect for functional programming constructs like `map()`, `filter()`, and `reduce()`. For instance:

```python

nums = [1, 2, 3, 4]

squared = list(map(lambda x: x2, nums))

print(squared) Output: [1, 4, 9, 16]

```

However, remember that `lambda` functions should only be used for simple operations. For more complex logic, stick to regular functions. 😊💡

Lambda functions are a handy tool in your Python toolkit, making your code sleek and efficient! 🚀✨

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