ExamAdept

How do you iterate over the key-value pairs in a dictionary?

A:

for key in dictionary:

B:

for key, value in dictionary.iter_items():

C:

for key, value in dictionary.items():

D:

for key, value in dictionary.get_pairs():

Answer: C

The items() method is used to iterate over key-value pairs in a dictionary.

📖

What is the result of the expression len(dictionary.keys())?

A:

Returns the number of keys in the dictionary.

B:

Returns the number of values in the dictionary.

C:

Returns the total number of key-value pairs.

D:

Raises a TypeError.

Answer: A

The len() function returns the number of keys in a dictionary.

📖

How do you get a list of all values in a dictionary?

A:

dictionary.all_values()

B:

dictionary.get_values()

C:

dictionary.values()

D:

dictionary.extract_values()

Answer: C

The values() method returns a list of all values in a dictionary.

📖

What is the purpose of the dictionary.copy() method?

A:

Creates a shallow copy of the dictionary.

B:

Creates a deep copy of the dictionary.

C:

Copies only the keys of the dictionary.

D:

Copies only the values of the dictionary.

Answer: A

The copy() method creates a shallow copy of the dictionary.

📖

How do you check if a value is present in the values of a dictionary?

A:

value in dictionary

B:

dictionary.contains(value)

C:

value.exists_in(dictionary)

D:

dictionary.has_value(value)

Answer: A

The in keyword is used to check if a value is present in the values of a dictionary.

📖

Questions for: Dictionaries