Code snippet showing the use of anonymous functions in Python

anonymous_functions.py

from collections import namedtuple

Person = namedtuple("Person", ["name", "age"])

if __name__ == "__main__":
    people = [
        Person("Marie Curie", 66),
        Person("Katherine Johnson", 101),
        Person("Ada Lovelace", 36),
    ]

    first_names = list(map(lambda p: p.name.split(" ")[0], people))
    print(first_names)  # ["Marie", "Katherine", "Ada"]

    # Filter the list to only people with name starting with 'A' and print it
    people_with_names_starting_with_a = list(filter(lambda p: p.name.startswith("A"), people))
    print(people_with_names_starting_with_a)

    # Sort the list by name and print it
    print(sorted(people, key=lambda p: p.name))

    # Sort the list by age and print it
    print(sorted(people, key=lambda p: p.age))