Assigning value from tuple to one variable in one line

Question

I'm not entirely sure what this is called, so I was having a hard time googling it.

I have a collection of custom objects:

from dataclasses import dataclass
@dataclass
class MatchMode:
    name: str
    description: str
    players: int

These objects are instantiated in my main class:

MATCH_MODES = (
    MatchMode("Name1", "Description1", 2), 
    MatchMode("Name2", "Desc2", 4)
)

I'm pulling all of the name's from each MatchMode into another variable like this:

self.matches_queue = {x.name.lower(): [] for x in self.MATCH_MODES}

Now what I'm trying to do is pull a subset of them into a variable in one line:

self.matches_queue = {x.name.lower(): [] for x in //self.MATCH_MODES where Players = 2//}

The problem I'm currently having is I dont know what this is called in order to google how to syntax

things: variable = {x.name.lower(): [] for x in self.MATCH_MODES}

Also, within this function, am I able to put some sort of filtering to only pull MATCH_MODES where Players = 2?

Edit: I ended up just solving it with this. it would be nice to have a more elegant solution:

        for modes in self.MATCH_MODES:
            if modes.players == 2:
                self.two_player_formats[modes.name.lower()] = []