Python Questions

Karan Bhardwaj

Score: 🔥 123

Beginner

Took 2 months

Programming Language

Python

86%

Questions Attempted

15 / 15

Correct Answers

Incorrect Answers

Points Earned

🔥 13

Question 1

What will the following code print?

my_set = {1, 2, 3}
my_set.add(3)
print(my_set)

{1, 2, 3, 3}
{1, 2, 3}
{3, 1, 2}
Error

Explanation:

Sets in Python are unordered collections of unique elements. Adding an element that already exists in the set has no effect. Therefore, the output will remain {1, 2, 3}.

Question 2

What is the purpose of the break statement in a loop?

It skips the current iteration and continues to the next.
It exits the loop entirely.
It prints the current value of the loop variable.
It defines a new variable within the loop.

Explanation:

When encountered inside a loop, the break statement immediately terminates the loop's execution and continues with the code after the loop.

Question 3

Which method is used to convert a string to uppercase in Python?

upper()
uppercase()
toUpper()
toUpperCase()

Explanation:

The upper() method is used to create an uppercase copy of a string in Python. The other options are not valid methods.

Question 4

What will the following Python code snippet print?

def greet(name):
    print(f"Hello, {name}!")
greet("Alice")

Hello, name!
Hello, Alice!
greet("Alice")
An error message.

Explanation:

The code defines a function greet that takes a name as input and prints a greeting. When called with "Alice", it substitutes "Alice" for name in the print statement.

Question 5

What is the output of the following Python code snippet?

print(10 / 3)

3
3.3333333333333335
3.0
Error

Explanation:

In Python, the '/' operator performs floating-point division, resulting in a floating-point number even if both operands are integers.

Question 6

Which comparison operator is used to check if two values are not equal?

Explanation:

The '!=' operator checks for inequality between two values. If the values are not equal, it returns True; otherwise, it returns False.

Question 7

Which loop is best suited for iterating over a sequence of elements like a list?

for loop
while loop
Both are equally suitable
None of the above

Explanation:

While both for and while loops can iterate over lists, for loops are generally preferred for their conciseness and automatic iteration over each element.

Question 8

What is the correct way to print 'Hello, World!' in Python?

print('Hello, World!')
console.log('Hello, World!')
System.out.println('Hello, World!')
echo 'Hello, World!'

Explanation:

Python uses the print() function to display output. The text to be printed is enclosed in parentheses and single or double quotes.

Question 9

What is the correct way to take integer input from the user in Python?

input()
int(input())
input(int())
raw_input()

Explanation:

The 'input()' function returns a string, so we need to convert it to an integer using 'int()' to store it as a numerical value.

Question 10

What will the following code snippet print?

x = 5
y = 2 * x
print(y)

5
2 * x
10
x * 2

Explanation:

The code assigns 5 to 'x', then calculates 'y' as 2 times 'x' (which is 10), and finally prints the value of 'y'.

Question 11

What is the output of the following Python code?

my_list = [1, 2, 3, 4, 5]
print(my_list[1:3])

[1, 2]
[2, 3]
[3, 4]
[1, 2, 3]

Explanation:

In Python slicing, the starting index is inclusive, and the ending index is exclusive. Therefore, my_list[1:3] will return a new list containing elements from index 1 (the second element) up to, but not including, index 3.

Question 12

What is the output of the following Python code snippet?

print(type(5.0))

<class 'int'>
<class 'float'>
<class 'str'>
<class 'number'>

Explanation:

The type() function in Python returns the data type of a given value. In this case, 5.0 is a floating-point number, hence the output is <class 'float'>.

Question 13

What is a key limitation of lambda functions in Python compared to regular functions defined with def?

Lambda functions can only take a single argument.
Lambda functions cannot be assigned to variables.
Lambda functions can only contain a single expression.
Lambda functions cannot use the return statement.

Explanation:

Lambda functions are designed for concise, single-expression operations. While they can technically contain multiple expressions using tricks, they are best suited for simple logic that can be expressed in one line.

Question 14

What will the following code print: print(10 > 5 and 'apple' == 'orange')?

True
False
Error
10appleorange

Explanation:

The expression uses the and operator. While 10 > 5 is True, 'apple' == 'orange' is False. For 'and' to return True, both conditions must be True.

Question 15

What is the correct way to access the third element of a list named 'my_list' in Python?

my_list[3]
my_list(2)
my_list[2]
my_list.get(3)

Explanation:

In Python, list indices start from 0. So, to access the third element, you would use index 2.