Optimal Host

Let’s say we have a group of $N$ friends represented by a list of dictionaries where each value is a friend name and their location on a three dimensional scale of ($x, y, z$). The friends want to host a party but want the friend with the optimal location (least distance to travel as a group) to host it.

Write a function pick_host to return the friend that should host the party.

Example:

Input:

friends = [
    {'name': 'Bob', location: (5,2,10)},
    {'name': 'David', location: (2,3,5)},
    {'name': 'Mary', location: (19,3,4)},
    {'name': 'Skyler', location: (3,5,1)},
]

def optimal_host(friends) -> 'David'