What are some examples of map, filter, and reduce in Python?

Can you explain how to use map, filter, and reduce in Python with examples?

Sure! The map function applies a function to all items in an input list. For example, map(lambda x: x**2, [1, 2, 3]) returns [1, 4, 9].

What about the filter function?

The filter function creates a list of elements for which a function returns true. For instance, filter(lambda x: x > 2, [1, 2, 3, 4]) gives [3, 4].

And how does reduce work?

reduce applies a rolling computation to sequential pairs of values in a list. For example, reduce(lambda x, y: x + y, [1, 2, 3, 4]) results in 10.

Can you provide a complete example using all three functions?

Absolutely! Here's a complete example:

from functools import reduce

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

squared = list(map(lambda x: x**2, numbers))
filtered = list(filter(lambda x: x > 5, squared))
result = reduce(lambda x, y: x + y, filtered)
print(result)  # Output will be the sum of filtered squared numbers