ExamAdept

How do you check if a key exists in a dictionary using the get() method?

A:

if key.get(dictionary):

B:

if key.exists_in(dictionary.get()):

C:

if dictionary.get(key) is not None:

D:

if key in dictionary.get():

Answer: C

The get() method returns None if the key is not present, so checking for is not None verifies key existence.

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What is the difference between the dictionary.keys() and dictionary.values() methods?

A:

Both methods return the keys of the dictionary.

B:

Both methods return the values of the dictionary.

C:

dictionary.keys() returns a list of keys, while dictionary.values() returns a list of values.

D:

dictionary.keys() returns a list of values, while dictionary.values() returns a list of keys.

Answer: C

The keys() method returns a list of keys, and the values() method returns a list of values in a dictionary.

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How do you remove a specific key-value pair from a dictionary?

A:

dictionary.remove(key)

B:

dictionary.delete(key)

C:

dictionary.clear(key)

D:

del dictionary[key]

Answer: D

The del keyword is used to remove a specific key-value pair from a dictionary.

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What is the purpose of the dictionary.update(key=value) method?

A:

Adds a new key-value pair to the dictionary.

B:

Updates the values of the dictionary with new values.

C:

Removes a key-value pair from the dictionary.

D:

Raises a SyntaxError.

Answer: A

The update() method with key=value adds a new key-value pair to the dictionary.

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How do you create a dictionary with keys from one list and values from another list?

A:

dict(keys, values)

B:

dict.fromkeys(keys, values)

C:

{key: value for key, value in zip(keys, values)}

D:

dictionary.create(keys, values)

Answer: C

Using a dictionary comprehension with zip() can create a dictionary with keys from one list and values from another.

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Questions for: Dictionaries