Week 3 Unit 3: Self-test

Question 1

Which of the following statements about lists, tuples, and dictionaries are correct?

Note: There are 3 correct answers to this question.

If there are many attributes to describe a complex object and these attributes vary from object to object (in other words, each object has slightly different attributes), then tuples are a good choice.

❌

If you have data about students and each data set for a student is structured in the same way (e.g. name, firstname, e-mail), then a list of tuples can be used to handle this data.

✅

A dictionary should be chosen if there is a natural key like a student-ID or a unique number.

✅

The data type for complex data should be carefully chosen, as this decision has an impact on the implementation of the program.

✅

Tuples of lists is an often used pattern in programming.

❌

Question 2

What is the value of variable a after the following statements have been executed?

Harry

❌

Hermione

❌

Key error

❌

Index error

✅

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