Standard Libraries

What is the purpose of the csv module?

A:

Sorting elements in a list

B:

Handling CSV (Comma-Separated Values) files

C:

Performing mathematical operations

D:

Implementing priority queues

Answer: B

import csv

# Example usage of csv module for reading from a CSV file
with open('data.csv', 'r') as csvfile:
    reader = csv.reader(csvfile)
    for row in reader:
        print(row)

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How can you use the turtle module in Python to draw a square?

A:

turtle.draw_square()

B:

turtle.square()

C:

turtle.forward(100); turtle.right(90); turtle.forward(100); turtle.right(90); turtle.forward(100); turtle.right(90); turtle.forward(100)

D:

turtle.draw('square')

Answer: C

import turtle

# Example usage of turtle module for drawing a square
for _ in range(4):
    turtle.forward(100)
    turtle.right(90)

turtle.done()

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What is the purpose of the gzip module?

A:

Sorting elements in a list

B:

Handling exceptions and errors

C:

Compressing and decompressing files using the gzip format

D:

Parsing JSON data

Answer: C

import gzip

# Example usage of gzip module for compressing a file
with open('file.txt', 'rb') as f_in:
    with gzip.open('file.txt.gz', 'wb') as f_out:
        f_out.writelines(f_in)

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How can you use the hashlib module in Python to calculate the SHA-256 hash of a string?

A:

hashlib.sha256(string.encode()).hexdigest()

B:

hashlib.hash256(string.encode())

C:

hashlib.sha256(string).hexdigest()

D:

hashlib.hash256(string)

Answer: A

import hashlib

# Example usage of hashlib module for calculating the SHA-256 hash of a string
string = 'Hello, World!'
hashed_string = hashlib.sha256(string.encode()).hexdigest()
print(hashed_string)

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How can you use the logging module in Python to configure a logger with a specific log level and output format?

A:

logging.create_logger(level=logging.DEBUG, format='%(message)s')

B:

logging.configure_logger(level=logging.INFO, format='%(asctime)s - %(message)s')

C:

logging.create_logger(logging.INFO, '%(message)s')

D:

logging.basicConfig(level=logging.DEBUG, format='%(message)s')

Answer: D

import logging

# Example usage of logging module for configuring a logger
logging.basicConfig(level=logging.DEBUG, format='%(asctime)s - %(message)s')
logger = logging.getLogger('my_logger')
logger.debug('This is a debug message')

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Questions for: Standard Libraries