Get Scratch followers (Python)

from requests import get

def followers(user):

    user = str(user)
    done = False
    offset = 0
    page = 1
    followers = list()

    while done == False:
        with get(f"https://api.scratch.mit.edu/users/{user}/followers?offset={offset}") as request:
            followers.extend(request.json())

            if (len(request.json()) != 20):
                done = True
            else:
              offset += 20
              page += 1

    my_list = list()
    for follower in followers:
        my_list.append(follower["username"])

    return my_list

print(followers(input("Username: ")))