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Python BeautifulSoup: Print the names of all HTML tags of a given web page going through the document tree

BeautifulSoup: Exercise-13 with Solution

Write a Python program to print the names of all HTML tags of a given web page going through the document tree.

Sample Solution:

Python Code:

import requests
from bs4 import BeautifulSoup
url = 'https://www.python.org/'
reqs = requests.get(url)
soup = BeautifulSoup(reqs.text, 'lxml')
print("\nNames of all HTML tags (https://www.python.org):\n")
for child in soup.recursiveChildGenerator():
    if child.name:
        print(child.name)

Sample Output:

Names of all HTML tags (https://www.python.org):

html
head
meta
meta
link
meta
meta
meta
meta
meta
meta
meta
meta
meta
meta
script
link
link
link
link
link
link
link
link
meta
meta
meta
title
..........

script
script
script
script
script

Python Code Editor:

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Previous: Write a Python program to extract all the text from a given web page.
Next: Write a Python program to retrieve children of the html tag from a given web page.

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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