Chapter 6: Strings

Question 1

A variable used to count something, usually initialized to zero and then incremented.

Answer 1

counter

Question 2

A string with no characters and length 0, represented by two quotation marks.

Answer 2

empty string

Question 3

A boolean variable used to indicate whether a condition is true or false.

Answer 3

flag

Question 4

A statement that calls a method.

Answer 4

invocation

Question 5

The property of a sequence whose items cannot be assigned.

Answer 5

immutable

Question 6

An integer value used to select an item in a sequence, such as a character in a string.

Answer 6

index

Question 7

One of the values in a sequence.

Answer 7

item

Question 8

A function that is associated with an object and called using dot notation.
eg. string.upper()

Answer 8

method

Question 9

Something a variable can refer to. For now, you can use it and “value” interchangeably.

Answer 9

object

Question 10

A pattern of traversal that stops when it finds what it is looking for.

Answer 10

search

Question 11

An ordered set; that is, a set of values where each value is identified by an integer index.

Answer 11

sequence

Question 12

A part of a string specified by a range of indices.

Answer 12

slice

Question 13

To iterate through the items in a sequence, performing a similar operation on each.

Answer 13

traverse

Question 14

Contains both data (the actual string itself) and methods, which are effectively functions that are built into it and are available to any instance of it.

Answer 14

object

Question 15

boolean operator that takes two strings and returns True if the first appears as a substring in the second

Answer 15

in
eg. ‘a’ in ‘banana’

Question 16

function that lists object methods

Answer 16

dir()

Question 17

string method that makes everything uppercase

Answer 17

.upper()

Question 18

string method that makes everything lowercase

Answer 18

.lower()

Question 19

string method that makes first letter uppercase

Answer 19

.capitalize()

Question 20

string method that searches for the position of one string within another. Returns index value

Answer 20

.find(string, starting index)

Question 21

string method that removes whitespace or substring argument from both ends

Answer 21

.strip()
.strip(substring)

Question 22

string method that returns True or False if substring matches beginning of string
argument must match case

Answer 22

.startswith(string)

Question 23

Allows Python expressions to be used within string literals. Accomplished by prepending an f to the string literal and enclosing expressions in curly braces {}

Answer 23

formatted string literals / f-string
eg. camels = 42
f’I have {camels} camels’ = ‘I have 42 camels’

Question 24

function to get more information about a string method

Answer 24

help()
eg. help(string.method)

Question 25

x%=1

Answer 25

gives remainder of x divided by value each loop. Doesn’t update variable after first loop

Question 26

string method that removes whitespace or substring argument from right side

Answer 26

.rstrip(string)

Question 27

string method that removes whitespace or substring argument from left side

Answer 27

.lstrip(string)

Question 28

string comparison order

Answer 28

CAPITAL < lowercase

Question 29

The binding of data and functions (or behavior)

Answer 29

encapsulation

Question 30

%s

Answer 30

string format operator

s = ‘What… is your favourite colour? %s. Go on. Off you go.’ %(input())

Question 31

%d

Answer 31

decimal format operator