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BigCodeBench / BigCodeBench v0.1.0_hf 687f29b9-71f1-5674-8ced-5550e8c1d115

Problem

Answer published by the source. Consult the official source to check your work against its answer.

complete prompt

from bs4 import BeautifulSoup
import requests

# Constants
URL = "http://example.com"


def task_func(url=URL, from_encoding="cp1251", use_lxml=False):
    """
    Fetches a web page from a given URL, decodes its content from a specified encoding,
    and returns the parsed HTML using BeautifulSoup. If specified, 'lxml' is used as
    the parser for improved performance. In case of any failure (like network issues,
    invalid URL, or decoding errors), the function returns None.

    Parameters:
    - url (str): The URL of the webpage to fetch. Defaults to the constant URL.
    - from_encoding (str): The original encoding of the webpage content. Defaults to 'cp1251'.
    - use_lxml (bool): Flag to use 'lxml' as the parser for BeautifulSoup. If False, the default 'html.parser' is used. Defaults to False.

    Returns:
    - BeautifulSoup object if the fetch and parse are successful.
    - None if the URL is invalid, the request fails, or parsing fails.

    Requirements:
    - bs4
    - requests

    Example:
    >>> html = task_func('http://example.com', 'cp1251', True)
    >>> print(html.prettify()) if html else print("Error fetching or parsing the webpage.")

    Notes:
    - The function returns None if the URL is empty or None.
    - Network errors, HTTP errors, and decoding issues are caught and result in None being returned.
    - If the HTTP response status code is 200 (indicating success), the content is decoded using the specified encoding
    - If the response status code is not 200, it implies an unsuccessful HTTP request (e.g., 404 Not Found, 403 Forbidden).
      In such cases, the function returns None, indicating that the webpage could not be successfully retrieved or was not available.
      
    """

instruct prompt

Fetches a web page from a given URL, decodes its content from a specified encoding, and returns the parsed HTML using BeautifulSoup. If specified, 'lxml' is used as the parser for improved performance. In case of any failure (like network issues, invalid URL, or decoding errors), the function returns None.
Note that: Notes: The function returns None if the URL is empty or None. Network errors, HTTP errors, and decoding issues are caught and result in None being returned. If the HTTP response status code is 200 (indicating success), the content is decoded using the specified encoding If the response status code is not 200, it implies an unsuccessful HTTP request (e.g., 404 Not Found, 403 Forbidden). In such cases, the function returns None, indicating that the webpage could not be successfully retrieved or was not available.
The function should output with:
    BeautifulSoup object if the fetch and parse are successful.
    None if the URL is invalid, the request fails, or parsing fails.
You should write self-contained code starting with:

Code

from bs4 import BeautifulSoup
import requests
# Constants
URL = "http://example.com"
def task_func(url=URL, from_encoding="cp1251", use_lxml=False):

code prompt

Code

from bs4 import BeautifulSoup
import requests
# Constants
URL = "http://example.com"
def task_func(url=URL, from_encoding="cp1251", use_lxml=False):

entry point

task_func

libs

  • bs4
  • requests

Discussion

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Source and history

task_id
687f29b9-71f1-5674-8ced-5550e8c1d115
task_key
default--v0~2e1~2e0~5fhf--687f29b9-71f1-5674-8ced-5550e8c1d115
task_revision_id
1
config / split
default / v0.1.0_hf

Official source

initial import