Chapter 7 Key Terms

Question 1

Sequence

Answer 1

Is an ordered collection of elements that can be of any data type. Ex: strings, tuples, lists.

Question 2

List

Answer 2

Is a mutable, ordered collection of elements using square brackets ‘[]’.

Question 3

Mutable

Answer 3

Elements can be modified after it is created. Change, add, or remove.

Question 4

Dynamic Data Structure

Answer 4

Structure that can change size by changing, adding, or removing elements.

Question 5

Repetition Operator *

Answer 5

Is used to repeat a sequence a specified number of times.

Question 6

Index

Answer 6

A numerical value that represents the position of an element within a sequence.

Question 7

Starting Index

Answer 7

The index of the first element in a sequence.

Question 8

Index of Last Element

Answer 8

The last element in a sequence can be found using the formula len(sequence) - 1, where len(sequence) is the length of the sequence.

Question 9

IndexError Exception

Answer 9

An exception occurs when you try to access an index that is outside the valid range of indices for a sequence.

Question 10

len

Answer 10

Is used to determine the number of elements in a sequence.

Question 11

Concatenating Lists

Answer 11

Combining two or more lists into a single list.

Question 12

Slice

Answer 12

Extracting a portion of a sequence by specifying a range of indices.

Question 13

in

Answer 13

Is used to check if a particular element exists within a sequence.

Question 14

append

Answer 14

Is used to add an element to the end of a list.

Question 15

index

Answer 15

Is used to find the index of the first occurrence of a specified element in a list.

Question 16

insert

Answer 16

Is used to add an element at a specific index within a list.

Question 17

sort

Answer 17

Is used to arrange the elements of a list in ascending order.

Question 18

remove

Answer 18

Is used to remove the first occurrence of a specified element from a list.

Question 19

reverse

Answer 19

Is used to reverse the order of elements in a list.

Question 20

del

Answer 20

Is used to remove an element or slice from a list by specifying the index or range of indices.

Question 21

min

Answer 21

Is used to find the smallest element in a list.

Question 22

max

Answer 22

Is used to find the largest element in a list.

Question 23

Copying a List

Answer 23

Creating a new list with the same elements as the original list.

Question 24

Adding Values in a List

Answer 24

Involves using methods like append or insert.

Question 25

Averaging Values in a List

Answer 25

Summing up the elements in the list and dividing the sum by the number of elements.

Question 26

Passing a List as an Argument

Answer 26

A list can be passed as an argument to a function so that the list within it can be operated on or altered.

Question 27

Returning a List from a Function

Answer 27

A function can return a list as a result, which allows lists to be created and returned with specific data.

Question 28

List Comprehension

Answer 28

Allows you to create a new list by applying an expression to each item in an iterable.

Question 29

Result Expression

Answer 29

Defines what will be included in the new list.

Question 30

Iteration Expression

Answer 30

Specifies how to iterate over an iterable within a list comprehension.

Question 31

if Clause

Answer 31

Is used to filter elements from the source iterable based on a condition.

Question 32

Two-Dimensional List

Answer 32

Each element of the outer list is itself a list.

Question 33

Row

Answer 33

One of the inner lists or sub lists.

Question 34

Column

Answer 34

A specific element at the same index in each of the inner lists.

Question 35

Tuple

Answer 35

Is an ordered, immutable collection of elements in Python, defined using parentheses ‘()’.