Revision Test- Programming in Python

Who developed Python Programming Language?

• Wick van Rossum

• Rasmus Lerdorf

• Guido van Rossum

• Niene Stom

Answer explanation

Python language is designed by a Dutch programmer Guido van Rossum in the Netherlands.

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

• .python

• .pl

• .py

• .p

Answer explanation

‘.py’ is the correct extension of the Python file. Python programs can be written in any text editor. To save these programs we need to save in files with file extension ‘.py’.

Which of the following is used to define a block of code in Python language?

• Indentation

• Key

• Brackets

• All of the mentioned

Answer explanation

In Python, to define a block of code we use indentation. Indentation refers to whitespaces at the beginning of the line.

Which of the following character is used to give single-line comments in Python?

• //

• #

• !

• /*

Answer explanation

To write single-line comments in Python use the Numero sign (#) at the beginning of the line. To write multi-line comments, close the text between triple quotes.

What is the order of precedence in python?

• Exponential, Parentheses, Multiplication, Division, Addition, Subtraction

• Exponential, Parentheses, Division, Multiplication, Addition, Subtraction

• Parentheses, Exponential, Multiplication, Division, Subtraction, Addition

• Parentheses, Exponential, Multiplication, Division, Addition, Subtraction

Answer explanation

For order of precedence, just remember this PEMDAS (similar to BODMAS).

Which of the following is not a core data type in Python programming?

• Tuples

• Lists

• Class

• Dictionary

Answer explanation

Class is a user-defined data type.

What will be the output of the following Python expression if x=56.236? print("%.2f"%x)

• 56.236

• 56.23

• 56.0000

• 56.24

Answer explanation

The expression shown above rounds off the given number to the number of decimal places specified. Since the expression given specifies rounding off to two decimal places, the output of this expression will be 56.24. Had the value been x=56.234 (last digit being any number less than 5), the output would have been 56.23.

What will be the output of the following Python statement?

"a"+"bc"

• bc

• abc

• a

• bca

Answer explanation

+ operator is concatenation operator.

Which of the following statements is used to create an empty set in Python?

• ( )

• [ ]

• { }

• set()

Answer explanation

{ } creates a dictionary not a set. Only set() creates an empty set.

Which of the following is a Python tuple?

• {1, 2, 3}

• {}

• [1, 2, 3]

• (1, 2, 3)

Answer explanation

Tuples are represented with round brackets.