Q: What is the output of the following code? for i in range(2, 6): print(i, i**2)

$\begin{array}{l}2\ 4\\3\ 9\\4\ 16\\5\ 25\end{array}$

Question 1

Which of the following best describes the difference between a sequence structure and a repetition structure in Python programming?

Accepted Answer

A sequence structure executes statements in order, one after another, while a repetition structure repeatedly executes a block of statements as long as a condition is true.

Question 2

Given the following code snippet, what will be the output?

stateName = "Virginia"
for letter in stateName:
    print(letter)

Accepted Answer

V
i
r
g
i
n
i
a

Question 3

Which statement about the 'break' and 'continue' statements in Python is correct?

Accepted Answer

The 'break' statement terminates the loop, while the 'continue' statement skips the rest of the current iteration and continues with the next iteration.

Question 4

Consider the following code:

list1 = ["one", 23, 17.5, "two", 33, 22.1, 242, "three"]
for var in list1:
    print(var)

What type of loop is being used and what is the output?

Accepted Answer

A for loop; prints each element of the list on a new line.

Question 5

What is the output of the following code?

for i in range(2, 6):
    print(i, i**2)

Accepted Answer

$\begin{array}{l}2\ 4\3\ 9\4\ 16\5\ 25\end{array}$

Question 6

Suppose you want to count the number of uppercase letters in a string 'g = "ISE 135"'. Which of the following code snippets will correctly accomplish this?

Accepted Answer

uppercase = 0
for char in g:
    if char.isupper():
        uppercase += 1
print(uppercase)

Question 7

What is the result of executing the following code?

for i in range(0, 9, 2):
    print(i)

Accepted Answer

$0\ 2\ 4\ 6\ 8$

Question 8

Which of the following best describes the use of nested for loops in Python?

Accepted Answer

Nested for loops allow you to process multi-dimensional data, such as generating multiplication tables, by having one loop inside another with different loop variables.

Question 9

Given the following code, what will be printed?

months = ("January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December")
for month in months:
    if "r" in month.lower():
        print(month)

Accepted Answer

February
March
April
September
October
November
December

Question 10

What is the output of the following code?

for i in range(5, 0, -1):
    print(i)

Accepted Answer

$5\ 4\ 3\ 2\ 1$

Question 11

Which of the following statements about the range function is TRUE?

Accepted Answer

range(m, n, s) produces a sequence from m to n, excluding n, with step s.

Question 12

A program is written to display a multiplication table for integers from 1 to 5 using nested for loops. Which of the following code snippets correctly implements this?

Accepted Answer

for m in range(1, 6):
    for n in range(1, 6):
        print(m, 'x', n, '=', m * n, end='	')
    print()

Question 13

Suppose you want to process exam grades for multiple students, where each student has 3 grades. Which loop structure is most appropriate for this scenario?

Accepted Answer

A nested loop: the outer loop for each student, and the inner loop for each grade.

Question 14

What will be the output of the following code?

for i in range(1, 8, 2):
    print(i)

Accepted Answer

$1\ 3\ 5\ 7$

Question 15

Which of the following is a correct use of the 'continue' statement inside a loop?

Accepted Answer

It skips the rest of the current iteration and continues with the next iteration of the loop.

Question 16

If you want to display the population growth for each year from 2014 to 2018, starting at 300,000 and increasing by 3% each year, which formula should you use inside the loop?

Accepted Answer

$pop = pop + 0.03 	imes pop$

Question 17

Which of the following statements about the range function is FALSE?

Accepted Answer

range(m, n, s) always produces a sequence regardless of the values of m, n, and s.

Question 18

In a while loop, what happens when the 'break' statement is executed?

Accepted Answer

The loop is terminated immediately and execution continues after the loop.

Python Program Structures and the for Loop

Study Guide - Practice Questions

Study Guide - Flashcards