When to use lambda functions?

Lambda functions are useful in several scenarios:

1. Short Functions: When you need a simple function for a short task, such as a single expression, lambda functions provide a concise way to define them.

2. Higher-Order Functions: They are often used as arguments to higher-order functions like map(), filter(), and sorted(), where a function is required for processing elements.

3. Anonymous Functions: When you don't need to reuse the function elsewhere, using a lambda function can keep your code cleaner and more readable.

4. Callbacks: In GUI programming or asynchronous programming, lambda functions can serve as quick callback functions.

Example:

Using map() with a lambda function to double a list of numbers:

numbers = [1, 2, 3, 4]
doubled = list(map(lambda x: x * 2, numbers))
print(doubled)  # Output: [2, 4, 6, 8]

Note:

For more complex functions, it's better to define a regular function using def for clarity and maintainability.