Chapter 1 to Chapter 5 python

What symbol is used to write a single-line comment in Python?

• //

• <!--

• #

• /*

Which of the following best describes the difference between Python 2 and Python 3?

• Python 3 is just a faster version of Python 2.

• Python 2 uses print as a function, while Python 3 uses print as a statement.

• Python 3 uses print as a function, while Python 2 uses print as a statement.

• Python 2 supports more libraries than Python 3.

Write a simple python program to remove duplicate elements from a list.
Input: [1, 2, 2, 3, 4, 4, 5]
Output: [1, 2, 3, 4, 5]

Answer explanation

Answer 1:
numbers = [1, 2, 2, 3, 4, 4, 5]

unique_numbers = []

for num in numbers:

if num not in unique_numbers:

unique_numbers.append(num)

print("List after removing duplicates:", unique_numbers)

Answer 2:
# Input list

numbers = [1, 2, 2, 3, 4, 4, 5]

# Remove duplicates using set and convert back to list

unique_numbers = list(set(numbers))

# Optional: sort the result to maintain order

unique_numbers.sort()

# Output

print("List after removing duplicates:", unique_numbers)

Which of the following is the correct extension of a Python file?

• .pyth

• .pt

• .py

• .p

Which keyword is used to define a function in Python?

• function

• def

• fun

• define

What is the output of: print(type("Hello"))

• <type 'string'>

• <class 'int'>

• <class 'str'>

• str

Which of the following is not a valid Python data type?

• array

• tuple

• list

• dictionary

What will be the output of print(2 ** 3)?

Which of the following is used to take input from the user in Python 3?

Which symbol is used for multiplication in Python?