MCQs on Python Variable Names

-

Test Your Knowledge: MCQs on Python Variable Names

Test your knowledge of Python variable names with this MCQ quiz! Challenge yourself with 15 questions that cover a range of topics, from valid variable names to reserved keywords and data types. See how well you know Python variable naming conventions and take your skills to the next level.

1. Which of the following is a valid Python variable name?

a) my_variable

b) 1variable

c) my variable

d) my-variable

View Answer

Answer: a

Variable names in Python can only contain letters, numbers, and underscores (_), and they cannot start with a number.

2. Which of the following is a valid way to declare a variable in Python?

a) variable name = value

b) name_variable = value

c) name variable = value

d) var-name = value

View Answer

Answer: a

In Python, variables are declared by assigning a value to a variable name using the = operator.

3. Which of the following is a reserved word in Python?

a) variable

b) for

c) value

d) number

View Answer

Answer: b

Reserved words, also known as keywords, are words that are already used by Python for specific purposes and cannot be used as variable names. "for" is one such keyword.

4. What is the convention for naming constants in Python?

a) All caps with underscores

b) Camel case

c) Snake case

d) Pascal case

View Answer

Answer: a

Constants in Python are typically named using all capital letters with underscores (_) separating words.

5. Which of the following is not a valid Python variable name?

a) MY_VARIABLE

b) MyVariable

c) My-Variable

d) my_variable_2

View Answer

Answer: c

Variable names in Python cannot contain hyphens (-).

6. What is the convention for naming private variables in Python?

a) Camel case

b) Pascal case

c) Snake case with a leading underscore

d) Snake case with a trailing underscore

View Answer

Answer: c

In Python, variables that are intended to be private (i.e., only accessible within the class or object that defines them) are typically named using snake case with a leading underscore (_).

7. What is the maximum length of a Python variable name?

a) 32 characters

b) 64 characters

c) 128 characters

d) There is no maximum length

View Answer

Answer: d

There is no maximum length for Python variable names.

8. Which of the following is not a valid Python built-in function?

a) print

b) input

c) len

d) my_function

View Answer

Answer: d

"my_function" is not a valid built-in function in Python. It would need to be defined before it could be used.

9. Which of the following is not a valid way to assign a value to a variable in Python?

a) variable_name = "value"

b) variable name = "value"

c) variable_name = 5

d) variable_name = True

View Answer

Answer: b

Variable names cannot contain spaces in Python, so "variable name" is not a valid variable name.

10. Which of the following is a valid way to delete a variable in Python?

a) delete variable_name

b) variable_name = None

c) del variable_name

d) variable_name.delete()

View Answer

Answer: c

The "del" keyword can be used to delete a variable in Python.

11. Which of the following is a valid variable name in Python?

a) my_variable

b) 123variable

c) variable-name

d) @variable

View Answer

Answer: a

Variable names in Python can only contain letters, numbers, and underscores (_). They cannot start with a number or contain special characters like dashes or @ symbols.

12. What is the convention for naming constants in Python?

a) All caps with underscores

b) CamelCase

c) snake_case

d) PascalCase

View Answer

Answer: a

Constants in Python are typically named using all caps with underscores separating words (e.g., MY_CONSTANT).

13. Which of the following is a reserved keyword in Python?

a) main

b) class

c) import

d) function

View Answer

Answer: b

"class" is a reserved keyword in Python and cannot be used as a variable name.

14. Which of the following is a valid way to check the data type of a variable in Python?

a) print(type(variable_name))

b) print(variable_name.type())

c) print(variable_name.type)

d) print(typeof(variable_name))

View Answer

Answer: a

The "type()" function can be used to check the data type of a variable in Python. Option a is the correct syntax.

15. Which of the following is not a valid way to concatenate two strings in Python?

a) string1 + string2

b) string1 . string2

c) "{} {}".format(string1, string2)

d) f"{string1} {string2}"

View Answer

Answer: b

To concatenate two strings in Python, you can use the "+" operator (option a), the "{} {}".format()" method (option c), or f-strings (option d). Option b is not a valid way to concatenate strings in Python.

Popular posts from this blog

MCQs on Python Core Data Types

-
Python Core Data Types: MCQs to Strengthen Your Understanding Test your knowledge of Python Core Data Types with this engaging multiple-choice quiz. Sharpen your skills and strengthen your understanding of lists, tuples, sets, dictionaries, and more. Challenge yourself with questions covering the basics and the nuances of Python data types. Whether you're a beginner or an experienced Pythonista, this quiz is sure to put your knowledge to the test! 1. What are the four built-in data types in Python? a) Integer b) Float c) String d) Complex View Answer Answer: a, b, c, d Python has four built-in data types: Integer, Float, String, and Complex. 2. What is the output of the expression 'hello' + 'world'? a) hello world b) helloworld c) worldhello d) error View Answer Answer: b The output of the expression 'hello' + 'world' is 'helloworld'. 3. What is the difference between a list and a tuple...
Read more

MCQs on Python Basic Operators

-
Python Basic Operators: Can You Ace This MCQ Test? Think you know all there is to know about Python Basic Operators? Take this MCQ quiz and find out! From arithmetic to comparisons, put your knowledge to the test and see how you stack up. 1. What is the result of 5 + 2? a) 7 b) 10 c) 3 d) 2.5 View Answer Answer: a) 7 The + operator adds two numbers together. 2. What is the result of 8 - 3? a) 5 b) 11 c) 24 d) 3 View Answer Answer: a) 5 The - operator subtracts one number from another. 3. What is the result of 4 * 3? a) 12 b) 1 c) 7 d) 0 View Answer Answer: a) 12 The * operator multiplies two numbers together. 4. What is the result of 6 / 2? a) 3 b) 12 c) 2.5 d) 0 View Answer Answer: a) 3 The / operator divides one number by another. 5. What is the result of 9 % 2? a) 1 b) 2 c) 0 d) 4.5 View Answer Answer: a) 1 The % operator returns the remainder of a division. 6. What i...
Read more

MCQs on Python Numeric Types

-
Python Numeric Types MCQs: Challenge Yourself and Strengthen Your Skills! Looking to test your knowledge of Python numeric types? Look no further! These multiple-choice questions will challenge your skills and help you master Python's integer, float, and complex data types. Try your hand at these MCQs and see how well you know Python's numeric types! 1. Which of the following is not a numeric data type in Python? a) int b) float c) bool d) str View Answer Answer: d str is not a numeric data type in Python, it is a sequence of characters. 2. What is the result of the following expression: 3 / 2? a) 1.5 b) 1 c) 2 d) 0.5 View Answer Answer: a The result of 3 / 2 in Python 3.x is a float value of 1.5 3. Which of the following is a built-in function for converting a string to an integer in Python? a) str() b) int() c) float() d) bool() View Answer Answer: b The int() function can be used to convert a string to an...
Read more