artwork = {"title": "Sunflowers", "artist": "Van Gogh", "year": 1889}

print(artwork["title"])          # "Sunflowers" — look up by key, in square brackets
print(artwork.get("title"))      # same result, written a different way
print(artwork.get("medium"))     # None — no crash, because .get() has a safe fallback built in
print(artwork.get("medium", "Unknown"))   # "Unknown" — .get() lets you supply your OWN fallback