How can I use lambda functions with higher-order functions in Python?

How can I use lambda functions with higher-order functions in Python?

You can use lambda functions as arguments to higher-order functions like map, filter, and reduce. For example, map(lambda x: x * 2, [1, 2, 3]) will double each element in the list.

Can you give me an example using filter?

Sure! You can use filter with a lambda to get even numbers from a list: filter(lambda x: x % 2 == 0, [1, 2, 3, 4, 5]) will return [2, 4].

What about using reduce with lambda?

You can use reduce from the functools module. For example, reduce(lambda x, y: x + y, [1, 2, 3, 4]) will sum the numbers and return 10.

Are there any performance considerations when using lambda functions?

Yes, while lambda functions are concise, they can be less readable than regular functions. For complex operations, consider defining a named function instead.