BeautifulSoup commonly used functions "go"

Example:

HTML file:

Html_doc = "" "dormouse ' s story

<p class= "Story" >once upon a time there were three Little sisters; And their names were <a href= "Http://example.com/elsie" class= "sister" id= "Link1" >elsie, <a href= "/http Example.com/lacie "class=" sister "id=" Link2 ">lacie and <a href=" Http://example.com/tillie "class=" Sister "Id=" Link3 ">Tillie; And they lived at the bottom for a well.

<p class= "Story" ...

"""

Code:

From BS4 import BeautifulSoup

Soup = BeautifulSoup (Html_doc)

Next you can start using a variety of features

Soup. X (x is any label, returns the entire label, including the label's attributes, contents, etc.)

such as: Soup.title

# <title>the Dormouse ' s story</title>

Soup.p

# <p class= "title" > Thedormouse ' s story

SOUP.A (Note: Only the first result is returned)

# <a class= "sister" href= "Http://example.com/elsie" id= "Link1" >elsie

Soup.find_all (' a ') (Find_all can return all)

# [<a class= "sister" href= "Http://example.com/elsie" id= "Link1" >elsie,

# <a class= "sister" href= "Http://example.com/lacie" id= "Link2" >lacie,

# <a class= "sister" href= "Http://example.com/tillie" id= "Link3" >tillie]

find can also be found by attributes

Soup.find (id= "Link3")

# <a class= "sister" href= "Http://example.com/tillie" id= "Link3" >tillie

to fetch a property of a tag, the available function has find_all,get

For link in Soup.find_all (' a '):

Print (Link.get (' href '))

# Http://example.com/elsie

# Http://example.com/lacie

# Http://example.com/tillie

to fetch all the text in an HTML file, use Get_text ()

Print (Soup.get_text ())

# The Dormouse ' s story

#

# The Dormouse ' s story

#

# Once Upon a time there were three Little sisters; and their names were

# Elsie,

# Lacie and

# Tillie;

# and they lived at the bottom for a well.

#

# ...

If you open an HTML file, the statement is available:

Soup = BeautifulSoup (Open ("index.html"))

Object in the BeautifulSoup

Tag (corresponding to tags in html)

Tag.attrs (returns all properties of tag as a dictionary)

You can add, delete, and change the properties of the tag directly, just like the Dictionary of Operations.

Tag[' class '] = ' verybold '

tag[' id '] = 1

Tag

# <blockquote class= "Verybold" id= "1" >extremely bold</blockquote>

Del tag[' class ']

del tag[' id ']

Tag

# <blockquote>extremely Bold</blockquote>

Tag[' class ']

# Keyerror: ' class '

Print (Tag.get (' class '))

# None

X.contents (x is the label, can return the contents of the label)

eg.

Head_tag = Soup.head

Head_tag

#

Head_tag.contents

[<title>the dormouse ' s story</title>]

Title_tag = Head_tag.contents[0]

Title_tag

# <title>the Dormouse ' s story</title>

Title_tag.contents

# [u ' the Dormouse ' story ']

BeautifulSoup commonly used functions "go"