Test 1 Review

What is the argument of the print() function in the following Python statement? print("My student ID is" + str(123456) )

"My student ID is" + str(123456)

(a)_________ start with the (b) _______ sign, and they are ignored by the compiler.

(a) comments (b) #

When you work with these (a) _______________ in a program, you normally assign them to (b) ______________.

(a) data types (b) variables

With (a)__________ continuation, you can divide statements after parentheses, brackets, and braces and before or after operators like plus or minus signs. With (b)___________ continuation, you can use the \ character to divide statements anywhere on a line.

(a) implicit (b) explicit continuation

A (a)__________ error violates one of the rules of Python coding so the source code can't be compiled. In contrast, a (b)__________ error occurs when a Python statement cannot be executed as the program is running.

(a) syntax error (b) runtime error

_________ is an example of a compound assignment operator.

+= -= *=

Given x = 23 , y = 15 . What is the value of the new_num after the following statement executes? new_num = x // y

1

What will be displayed after the following code is executed? counter = 1 while counter <= 20: print(counter, end=" ") counter *= 3 print("\nThe loop has ended.")

1 3 9 The loop has ended.

For the following code, what will the result be if the user enters 5 at the prompt? sum = 0 end_value = int(input("Enter a number: ")) for i in range(1, end_value): sum = sum + i print(sum, end=", ")

1, 3, 6, 10

Python will sort the strings that follow in this sequence: Peach peach 1peach 10Peaches

10Peaches, 1peach, Peach, peach

What will the output of the following code be if the user enters 3 at the prompt? your_num = int(input("Enter a number:")) while (your_num > 0): product = your_num * 5 print(your_num, " * 5 = ", product) your_num -= 1

3 * 5 = 15 2 * 5 = 10 1 * 5 = 5

What is the value of my_num after the following statement executes? my_num = (50 + 2 * 10 - 4) / 2

33

How many times will "Hi there!" be displayed after the following code executes? num = 2 while num < 12: print("Hi, there!") num += 2

5

Given x = 7 , y = 2 , z = 1.5 . What is the value of new_num after the following statement executes? new_num = x/y + z

5.0

What will this loop display? sum = 0 for i in range(0, 25, 5): sum += i print(sum)

50

How many times will "Hi again!" be displayed after the following code executes? for i in range(0, 12, 2): print("Hi, again!")

6

What is the value of my_num after the following statements execute? my_num = 5 my_num += 20 my_num -= 12 my_num *= 0.5

6.5

What is the value of number after the following statement executes? number = (5 ** 2) * ((10 - 4) / 2)

75

Given x = 23 , y = 15 . What is the value of new_num after the following statement executes? new_num = x % y

8

Which of the following can use the range() function to loop through a block of statements?

A for statement

If you want to code an if clause, but you don't want to perform any actions, you can code

A pass statement

The following is an example of _______________. #!/usr/bin/env python 3

A shebang line

Which of the following begins by testing a condition defined by a Boolean expression and then executes a block of statements if the condition is true?

A while statement

A runtime error is also known as:

An exception

In a while loop, the Boolean expression is tested

Before the loop is executed

Which type of expression has a value of either true or false?

Boolean

To jump to the end of the current loop, you can use the

Break statement

The variable name firstName is an example of ______ notation in Python.

Camel case

Since Python's for loop executes once for each item in a collection, it's known as a ____________. (two words)

Collection-controlled loop

To jump to the start of the current loop, you can use the

Continue statement

You can use the ___________ to continue executing the loop by jumping to the top of the loop. (two words)

Continue statement

Like all programming languages, Python provides __________ that let you control the execution of a program. (two words)

Control statements

If statements are often used to choose one option out of several. They are also used to make sure that user entries are valid which is called __________.

Data validation

The goal of __________ is to fix all the errors in a program.

Debugging

The data in ________ is persistent so it is not lost when an application ends.

Disk storage

According to our textbook, floating-point values are always exact and precise. True or false?

FALSE

Python 3 is backward compatible with Python 2. True or false?

FALSE

When you use the _________ with the range() function, it executes a for loop once for each integer in the collection of integers returned by the range() function.

For statement

Python is considered a good first language to learn because:

Has simple syntax that's easier to read than most other languages Is open source Has most features of traditional programming languages Supports the development of a wide range of programs, including games, web applications, and system administration.

The AND operator has

Higher precedence than the OR operator, but lower precedence than the NOT operator

To create a Python program, you use:

IDLE's editor

To test a Python statement, you use:

IDLE's interactive shell

The ________ ends when the indentation for the statements in the last clause ends.

If statement

Which of the following is true for an if statement that has both elif and else clauses?

If the condition in the if clause is true, the statements in that clause are executed.

Python relies on correct __________ to determine the meaning of a statement.

Indentation

The ____________ makes it easy to experiment with Python code and view the results right away. This is another feature that makes Python a good first language for beginning programmers. (two words)

Interactive shell

AND, OR, and NOT are __________ operators.

Logical

In some cases, you can use the ___________ to get the same results that you would get with nested if statements.

Logical operators

To compare two strings with mixed uppercase and lowercase letters, a programmer can first use the

Lower() method to convert all characters in each string to lowercase.

The data in _____________ is lost when an application ends.

Main memory

Which of the following is not an acceptable way to code a nested structure?

Nest an else clause within an elif clause

In many programs, you will need to code one if statement within a clause of another if statement in order to get the logic right. The result is known as _______.

Nested if statements

What will be displayed after the following code executes? guess = 19 if guess < 19: print("Too low") elif guess > 19: print("Too high")

Nothing will display

A for loop that uses a range() function is executed

Once for each integer in the collection returned by the range() function

Python is ______, which means that its source code is available to the entire Python community.

Open source

The system software for a computer provides all of the software that is needed for running the applications, including the _____________. (two words).

Operating system

A _________ does nothing. You can use it as a placeholder when a statement is required but you do not want to perform any action.

Pass statement

_______________ is your own shorthand for planning the logic of a program.

Pseudocode

When two strings are compared, they are evaluated based on the _________ of the characters in the string.

Sort sequence

Which type of errors must be fixed before the program can be compiled?

Syntax errors

The __________ software for a computer provides the software that's needed for running applications.

Systems

Python programs can be written using a simple text editor. True or false?

TRUE

The goal of _________ is to find all the errors in a program.

Testing

To run a Python program from IDLE, you use:

The F5 key

___________ translates bytecode into instructions for the computer.

The Python virtual machine

Pseudocode can be used to plan

The coding of control structures

For the following code, what will the result be if the user enters 4 at the prompt? product = 1 end_value = int(input("Enter a number: ")) for i in range(1, end_value+1): product = product * i i += 1 print("The product is ", product)

The product is 24.

For the following code, what will the result be if the user enters 4 at the prompt? product = 1 end_value = int(input("Enter a number: ")) for i in range(1, end_value): product = product * i i += 1 print("The product is ", product)

The product is 6

When an exception occurs while a program is running,

The program crashes and an error message is displayed.

A web application runs

Through a browser

A console application runs ____________.

Via a command prompt

A _____________ is also referred to as a condition-controlled loop.

While loop

In a _________ Python begins by testing the condition defined by the Boolean expression at the top of the statement. Then, if this condition is True, Python executes the statements in the loop until the condition is False.

While statement

What if anything, is wrong with this code? rating = input("Enter the rating for this product: ") rating = rating + 2 print("The adjusted rating is " + rating + ".")

a string variable is used in an arithmetic expression

Which of the following in this expression is evaluated first? age >= 65 and status == "retired" or age < 18

age >= 65

Which of the following in this expression is evaluated first? age >= 65 or age <= 18 or status == "retired"

age >= 65

What if anything, is wrong with this code? student_score = int(input("Enter this student's score: ")) score = student_score + 5 print("With the 5-point curve, the student's score is ", scores, ".")

an undeclared variable name is used in the print() function

The Python interpreter is used to compile source code into __________.

bytecode

Given the following code, select the compound condition that makes sure that the input is an integer greater than 0 and less than 1,000. my_num = input("Enter a number between 1 and 999:") check_num = int(my_num) while _________________________: my_num = input("Try again. The number must be between 1 and 999") check_num = int(my_num)

check_num <= 0 or check_num >= 1000

What will be the result of the following code if the user enters 81 at the prompt? score_curve = 7 score = input("Enter your score on the exam: ") score_curve += score print(score_curve)

error: you cannot use the += operator to add a string variable to an int value

Which of the following data types would you use to store the number 25.62?

float

A _______________ is a group of statements that perform a specific task.

function

In Python, a ___________ performs a task.

function

The statements within a clause end when the _________ ends.

indentation

Unlike other programming languages, Python relies on proper ___________ in its source code.

indentation

You can use the _________ string method to convert the letters in a string to all lowercase. This is useful when comparing strings.

lower()

What, if anything, is wrong with this code? my_age = input("Enter your age: ") myNewAge = int(my_age) + 5 print("In 5 years you will be", myNewAge, ".")

nothing is wrong with this code

Given that pi = 3.1415926535, which of the following print() functions displays: pi = 3.14

print("pi =" + str(round(pi,2)))

You can use _______ to plan the logic of a program.

pseudocode

The following is an example of _______________. print("Hello out there!") # get input name = input("Who are you?") print("Goodbye, " , name)

source code

first_name = "Sheldon" Sheldon is a _________ in this line of code in Python.

string literal