python map and reduce, give me an example

Sure! Here's an example of using map and reduce in Python:

Let's say we want to add together a list of numbers. We can first use map to convert each number from a string to an integer, and then use reduce to add them all together.

from functools import reduce

numbers = ['1', '2', '3', '4', '5']

numbers_int = map(int, numbers)

sum_of_numbers = reduce(lambda x, y: x + y, numbers_int)

print(sum_of_numbers)

Output:

15

In this example, we first convert each element of the `numbers` list to an integer using `map(int, numbers)`. This creates a new list where each element is an integer.

Then, we use `reduce` to add all the elements of the `numbers_int` list together. The `lambda` function passed to reduce takes two arguments (x and y) and returns their sum. `reduce` applies this function to each element of the list, iteratively combining them until the final result is obtained.