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Python Web Scraping: Download and display the content of robot.txt for en.wikipedia.org

Python Web Scraping: Exercise-2 with Solution

Write a Python program to download and display the content of robot.txt for en.wikipedia.org.

Sample Solution:

Python Code:

import requests
response = requests.get("https://en.wikipedia.org/robots.txt")
test = response.text
print("robots.txt for https://www.wikipedia.org/")
print("===================================================")
print(test)

Sample Output:

robots.txt for https://www.wikipedia.org/
===================================================
# robots.txt for https://www.wikipedia.org/ and friends
#
# Please note: There are a lot of pages on this site, and there are
# some misbehaved spiders out there that go _way_ too fast. If you're
# irresponsible, your access to the site may be blocked.
#

# Observed spamming large amounts of https://en.wikipedia.org/?curid=NNNNNN
# and ignoring 429 ratelimit responses, claims to respect robots:
# https://mj12bot.com/
User-agent: MJ12bot
Disallow: /

# advertising-related bots:
User-agent: Mediapartners-Google*
Disallow: /

# Wikipedia work bots:
User-agent: IsraBot
Disallow:

User-agent: Orthogaffe
Disallow:

# Crawlers that are kind enough to obey, but which we'd rather not have
# unless they're feeding search engines.
User-agent: UbiCrawler
Disallow: /

User-agent: DOC
Disallow: /

User-agent: Zao
Disallow: /

# Some bots are known to be trouble, particularly those designed to copy
# entire sites. Please obey robots.txt.
User-agent: sitecheck.internetseer.com
Disallow: /

User-agent: Zealbot
Disallow: /
............
#
Disallow: /wiki/Wikipedia:Article_Incubator
Disallow: /wiki/Wikipedia%3AArticle_Incubator
Disallow: /wiki/Wikipedia_talk:Article_Incubator
Disallow: /wiki/Wikipedia_talk%3AArticle_Incubator
#
Disallow: /wiki/Category:Noindexed_pages
Disallow: /wiki/Category%3ANoindexed_pages
#
#

Flowchart:

Python Web Scraping Flowchart: Test if a given page is found or not on the server

Python Code Editor:

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Previous: Write a Python program to test if a given page is found or not on the server.
Next: Write a Python program to get the number of datasets currently listed on data.gov.

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Python: Tips of the Day

Find current directory and file's directory:

To get the full path to the directory a Python file is contained in, write this in that file:

import os 
dir_path = os.path.dirname(os.path.realpath(__file__))

(Note that the incantation above won't work if you've already used os.chdir() to change your current working directory, since the value of the __file__ constant is relative to the current working directory and is not changed by an os.chdir() call.)

To get the current working directory use

import os
cwd = os.getcwd()

Documentation references for the modules, constants and functions used above:

  • The os and os.path modules.
  • The __file__ constant
  • os.path.realpath(path) (returns "the canonical path of the specified filename, eliminating any symbolic links encountered in the path")
  • os.path.dirname(path) (returns "the directory name of pathname path")
  • os.getcwd() (returns "a string representing the current working directory")
  • os.chdir(path) ("change the current working directory to path")

Ref: https://bit.ly/3fy0R6m