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Accessing Nested Data - Dictionaries | Python | Repovive

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Python9 sections · 462 units23h total

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Accessing Nested Data

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Be careful with nested access. If any key is missing, you get an error:

users = {"alice": {"age": 30}}

# This crashes if "bob" doesn't exist
print(users["bob"]["age"])  # KeyError

Use get() for safety:

bob = users.get("bob", {})
age = bob.get("age", "unknown")

Or check first:

if "bob" in users:
    print(users["bob"]["age"])