Now thankfully the syntax for performing this action is relatively straightforward and all we have to do is update the list so if we have a dictionary-like we have right here with teams we can simply add a new key the same way that we would perform a query but instead of performing that query on an item that exists we're going to add a new one.

So if I come here and I say red sox then to add this key-value pair I can add it and then since I'm adding a list I'm going to just add Price and Betts and add two Red Sox players. And now if I run this you'll see that our team's list which is what I'm printing out now contains the Red Sox

and part of the reason why I also wanted to use this example was to see that you can break your regular keys into multiple words That's one of the nice things about using strings when it comes to implementing keys inside of a dictionary because they are perfectly fine to be multiple words or even sentences.

Now obviously the longer the key is and the harder it is to type out or the harder it is to look up the more that you could potentially be running into bugs where you think that you have the right name for the key. But you actually have one character off or something like that. So usually you want to keep your keys as simple and as explicit as possible.

But I did want to show in this example that they are simply strings. They can be treated just like any other string in the sense that you can have spaces in them they can contain regular alphanumeric characters they could contain numbers anything like that. Anything that you'd put in a string that you can put in a key just like we did here. So that is how you can add new elements to new key-value pairs to dictionaries in Python.

Code

teams = {
  "astros": ["Altuve", "Correa", "Bregman"],
  "angels": ["Trout", "Pujols"],
  "yankees": ["Judge", "Stanton"],
}

teams['red sox'] = ['Price', 'Betts']

print(teams)