Quiz: Python Dictionaries

5 questionsNo time limitPass: 60%+10 XP on first pass

Store data by name instead of position. Create, read, update and loop over dictionaries, use get() safely, count things, and nest dictionaries for JSON-like data.

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Question 1

What does this print?

d = {"a": 1, "b": 2}
d["a"] = 5
print(d["a"] + d["b"])

376Error

Question 2
What does {"x": 1}.get("y", 0) return?
None0KeyError"y"
Question 3
Which CANNOT be a dictionary key?
"name"42(1, 2)[1, 2]
Question 4
What does this print?
```
d = {}
for ch in "aab":
    d[ch] = d.get(ch, 0) + 1
print(d)
```
{'a': 2, 'b': 1}{'a': 1, 'b': 1}{'aab': 1}{'a': 2}
Question 5
What does len({"a": 1, "a": 2}) return?
123Error