Adding values with reduce() function from the list of tuples

[perfringo]

Although what I'm looking for is to use the reduce function to add up all the numbers.

Alternative to bowlofred solution is to stream only age and use lambda to add up:

from functools import reduce

data = [("Rachel",19),
        ("Monica",18),
        ("Phoebe",17),
        ("Joey",16),
        ("Ross",20),
        ("Chandler",21)]

total = reduce(lambda x, y: x+y, (age for _, age in data))

# total -> 111

Of course, for adding there is built-in function sum:

sum(age for _, age in data)