Dictionaries

Dictionaries (dicts) are used to store data in key-value pairs.

dog = {
    "name": "Scooby",
    "breed": "Great Dane",
    "speaks": True
}

# Items are accessed by key
print(dog["name"]) # "Scooby"

# A dict is mutable, i.e. you can add more items
dog["total_movies"] = 13

Combining dicts and lists #

Lists can contain primitives (like strings), but also collections (like other lists, or dicts):

# Using a list to store a list of dogs
dogs = [
    {
        "name": "Milou",
        "breed": "Fox Terrier"
    },
    {
        "name": "Balto",
        "breed": "Husky"
    },
    {
        "name": "Snoopy",
        "breed": "Beagle"
    }
]

print(len(dogs)) # 3
print(dogs[0]["name"]) # Milou