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1.What is the purpose of the `random.choice()` function in Python?

To generate random integers

To choose a random element from a sequence

To shuffle a sequence randomly

To generate random floating-point numbers

2.How do you check if a file is readable in Python?

os.is_readable("filename")

file.can_read()

os.access("filename", os.R_OK)

file.is_readable()

3.What is the purpose of the `os.path.join` function in Python?

To join paths together

To create a new path

To split a path

To check if a path exists

4.What does the `sum()` function do in Python?

Calculates the product of a sequence

Calculates the sum of a sequence

Calculates the average of a sequence

Calculates the minimum value in a sequence

5.What is the output of the following code?

print("Python"[::-1])

Nohtyp

nythoP

P

Error

6.What is the output of the following code?

print("Python".find("th", 2))

1

2

3

Error

7.What is the output of the following code?

print("Python" + 3)

Python3

TypeError

Python333

Error

8.What is the output of the following code?

print("Python"[1:4])

yth

Pyt

P

ython

9.What is the output of the following code?

print("Hello" * -1)

Error

Hello

0

Infinite loop

10.How do you check if a variable is a dictionary in Python?

type(variable) == dictionary

variable.is_dict()

isinstance(variable, dict)

variable.type() == "dict"

11.What is the purpose of the `sys.exit()` function in Python?

To terminate the Python interpreter

To exit a loop

To close a file

To restart the Python interpreter

12.How do you check if a variable is a valid Python identifier?

variable.is_valid_identifier()

is_identifier(variable)

identifier.check(variable)

valid_identifier(variable)

13.What does the `enumerate()` function do in Python?

Iterates over elements and their indices in a sequence

Creates an enumerated list

Counts the number of occurrences of an element

Sorts a sequence in ascending order

14.What is the output of the following code?

print(10 / 3)

3.33

3

3.0

3.3333

15.How do you convert a list of strings to uppercase in Python?

list.upper()

convert_to_uppercase(list)

[x.upper() for x in list]

list.to_upper()

16.What is the purpose of the `sys.stdin` object in Python?

To read input from the command line

To write output to the console

To interact with the file system

To access system environment variables

17.How do you check if a number is a prime number in Python?

number.is_prime()

is_prime(number)

[i for i in range(2, number) if number % i == 0] == []

prime(number)

18.What is the purpose of the `time.sleep()` function in Python?

To calculate the execution time of a function

To pause the execution of a program

To set the system time

To measure the elapsed time

19.How do you check if a variable is a set in Python?

type(variable) == set

variable.is_set()

isinstance(variable, set)

variable.type() == "set"

20.How do you check if a variable is a tuple in Python?

type(variable) == tuple

variable.is_tuple()

isinstance(variable, tuple)

variable.type() == "tuple"

General Python IX