Question 1

What is the process of retrieving data from a file called?

Accepted Answer

A)   retrieving data
B)   reading data
C)   reading input
D)   getting data

Question 2

A(n)___________ file contains data that has been encoded as text,using a scheme such as ASCII.

Accepted Answer

text

Question 3

It is possible to create a while loop that determines when the end of a file has been reached.

Accepted Answer

A) True 
 B)False

Question 4

In Python,there is nothing that can be done if the program tries to access a file to read that does not exist.

Accepted Answer

A) True 
 B)False

Question 5

Given that the customer file references a file object,and the file was opened using the 'w' mode specifier,how would you write the string 'Mary Smith' to the file?

Accepted Answer

A)   customer file.write('Mary Smith') 
B)   customer.write('w', 'Mary Smith') 
C)   customer.input('Mary Smith') 
D)   customer.write('Mary Smith')

Question 6

Python allows the programmer to work with text and number files.

Accepted Answer

A) True 
 B)False  False

Question 7

If data is retrieved from a file by a program,this is known by the term __________ file.

Accepted Answer

input

Question 8

Which of the following is the correct way to open a file named users.txt in 'r' mode?

Accepted Answer

A)   infile = open('r', users.txt) 
B)   infile = read('users.txt', 'r') 
C)   infile = open('users.txt', 'r') 
D)   infile = readlines('users.txt', r)

Question 9

Which mode specifier will erase the contents of a file if it already exists and create the file if it does not already exist?

Accepted Answer

A)   'w'
B)   'r'
C)   'a'
D)   'e'

Question 10

Which statement can be used to handle some of the runtime errors in a program?

Accepted Answer

A)   an exception statement
B)   a try statement
C)   a try/except statement
D)   an exception handler statement

Question 11

A(n)___________ block includes one or more statements that can potentially raise an exception.

Accepted Answer

The answer of A(n)___________ block includes one or more statements...

Question 12

What will be the output after the following code is executed and the user enters 75 and -5 at the first two prompts?

Accepted Answer

A)   ERROR: cannot have 0 items
B)   ERROR: cannot have 0 itemsERROR: number of items can't be negative
C)   ERROR: number of items can't be negative
D)   Nothing; there is no print statement to display average. The ValueError will not catch the error.

Question 13

A(n)__________ gives information about the line number(s)that caused an exception.

Accepted Answer

The answer of A(n)__________ gives information about the line number(s)that...

Question 14

Which of the following is the correct way to open a file named users.txt to write to it?

Accepted Answer

A)   outfile = open('w', users.txt) 
B)   outfile = write('users.txt', 'w') 
C)   outfile = open('users.txt', 'w') 
D)   outfile = open('users.txt')

Question 15

A filename __________ is a short sequence of characters that appear at the end of a filename,preceded by a period.

Accepted Answer

The answer of A filename __________ is a short sequence...

Question 16

If the last line in a file is not terminated with 
,the readline method will return the line without 
.

Accepted Answer

A) True 
 B)False

Question 17

Which method could be used to strip specific characters from the end of a string?

Accepted Answer

A)   estrip
B)   rstrip
C)   strip
D)   remove

Question 18

Which type of file access jumps directly to a piece of data in the file without having to read all the data that comes before it?

Accepted Answer

A)   sequential
B)   random
C)   numbered
D)   text

Question 19

When a piece of data is read from a file,it is copied from the file into the program.

Accepted Answer

A) True 
 B)False

Question 20

Which step creates a connection between a file and a program?

Accepted Answer

A)   open the file
B)   read the file
C)   process the file
D)   close the file

Exam 6: Files and Exceptions

What is the process of retrieving data from a file called?

Correct AnswerverifiedShow Answer

A(n)___________ file contains data that has been encoded as text,using a scheme such as ASCII.

Correct Answerverifiedtext

It is possible to create a while loop that determines when the end of a file has been reached.

Correct AnswerverifiedShow Answer

In Python,there is nothing that can be done if the program tries to access a file to read that does not exist.

Correct AnswerverifiedShow Answer

Given that the customer file references a file object,and the file was opened using the 'w' mode specifier,how would you write the string 'Mary Smith' to the file?

Correct AnswerverifiedShow Answer

Python allows the programmer to work with text and number files.

Correct AnswerverifiedFalse

If data is retrieved from a file by a program,this is known by the term __________ file.

Correct Answerverifiedinput

Which of the following is the correct way to open a file named users.txt in 'r' mode?

Correct AnswerverifiedShow Answer

Which mode specifier will erase the contents of a file if it already exists and create the file if it does not already exist?

Correct AnswerverifiedShow Answer

Which statement can be used to handle some of the runtime errors in a program?

Correct AnswerverifiedShow Answer

A(n)___________ block includes one or more statements that can potentially raise an exception.

Correct AnswerverifiedShow Answer

What will be the output after the following code is executed and the user enters 75 and -5 at the first two prompts?

Correct AnswerverifiedShow Answer

A(n)__________ gives information about the line number(s)that caused an exception.

Correct AnswerverifiedShow Answer

Which of the following is the correct way to open a file named users.txt to write to it?

Correct AnswerverifiedShow Answer

A filename __________ is a short sequence of characters that appear at the end of a filename,preceded by a period.

Correct AnswerverifiedShow Answer

If the last line in a file is not terminated with \n,the readline method will return the line without \n.

Correct AnswerverifiedShow Answer

Which method could be used to strip specific characters from the end of a string?

Correct AnswerverifiedShow Answer

Which type of file access jumps directly to a piece of data in the file without having to read all the data that comes before it?

Correct AnswerverifiedShow Answer

When a piece of data is read from a file,it is copied from the file into the program.

Correct AnswerverifiedShow Answer

Which step creates a connection between a file and a program?

Correct AnswerverifiedShow Answer

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text

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False

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input

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