Chapter 5

Question 1

TF

A Python string literal is always enclosed in double quotes.

Answer 1

False

Question 2

TF

The last character of a string s is at position len(s)-1

Answer 2

True

Question 3

TF

A string always contains a single line of text.

Answer 3

False

Question 4

TF

In Python “4” + “5” is “45”.

Answer 4

True

Question 5

TF

Python lists are mutable, but strings are not

Answer 5

True

Question 6

TF

ASCII is a standard for representing characters using numeric codes.

Answer 6

True

Question 7

TF

The split method breaks a string into a list of substrings, and join does the opposite.

Answer 7

True

Question 8

TF

A substitution cipher is a good way to keep sensitive information secure.

Answer 8

False

Question 9

TF

The add method can be used to add an item to the end of a list.

Answer 9

False

Question 10

TF

The process of associating a file with an object in a program is called “reading” the file.

Answer 10

False

Question 11

Accessing a single character out of a string is called:

Answer 11

Index

Question 12

Which of the following is the same as s[0:-1]?

Answer 12

s[:len(s)-1]

Question 13

What function gives the Unicode value of a character?

Answer 13

ord

Question 14

Which of the following can not be used to convert a string of digits into a number?

Answer 14

str

Question 15

A successor to ASCII that includes characters from (nearly) all written languages is

Answer 15

Unicode

Question 16

Which string method converts all the characters of a string to uppercase?

Answer 16

Upper

Question 17

The string “slots” that are filled in by the format method are marked by:

Answer 17

{}

Question 18

Which of the following is not a file reading method in Python?

Answer 18

Readall

Question 19

The term for a program that does its I/O with files is

Answer 19

Batch

Question 20

Before reading or writing to a file, a file object must be created via

Answer 20

Open