Taking input using input() in Python - Practice Problems & Coding Challenges

Challenge - 5 Problems

❓ Predict Output

intermediate

What is the output of this code when input is '5'?

Consider the following Python code that takes input and processes it:

Python

num = input("Enter a number: ")
result = int(num) * 2
print(result)

A 10

B 55

C TypeError

D 5

💡 Hint

Remember that input() returns a string and you need to convert it to an integer before multiplying.

The input '5' is read as a string. Using int() converts it to the number 5. Multiplying by 2 gives 10, which is printed.

❓ Predict Output

intermediate

What will be printed if the input is 'hello'?

Look at this code snippet:

Python

user_input = input("Say something: ")
print(user_input * 3)

A TypeError

B hellohellohello

C hello 3 times with spaces

D hello3

💡 Hint

Multiplying a string by a number repeats the string that many times.

The input 'hello' is a string. Multiplying it by 3 repeats it three times without spaces.

❓ Predict Output

advanced

What error does this code raise if input is 'abc'?

Analyze this code:

Python

value = int(input("Enter a number: "))
print(value + 10)

A ValueError

B TypeError

C SyntaxError

D 10abc

💡 Hint

int() cannot convert non-numeric strings to integers.

Trying to convert 'abc' to int causes a ValueError because 'abc' is not a valid number.

❓ Predict Output

advanced

What is the output if the input is '3 4'?

Consider this code:

Python

a, b = input("Enter two numbers separated by space: ").split()
print(int(a) + int(b))

A 34

B ValueError

C 7

D TypeError

💡 Hint

split() divides the input string into parts separated by spaces.

Input '3 4' splits into '3' and '4'. Converting both to int and adding gives 7.

❓ Predict Output

expert

What is the output of this code if input is '10'?

Examine this code carefully:

Python

num = input("Enter a number: ")
match num:
    case '10':
        print("Ten")
    case _:
        print("Not Ten")

A TypeError

B Not Ten

C SyntaxError

D Ten

💡 Hint

match-case compares the input string exactly to the case values.

Input '10' matches the case '10', so it prints 'Ten'.