Hướng dẫn remove all html tag python - xóa tất cả thẻ html python

Pyparsing giúp bạn dễ dàng viết một vũ nữ thoát y HTML bằng cách xác định một mẫu khớp với tất cả các thẻ HTML mở và đóng, sau đó chuyển đổi đầu vào bằng cách sử dụng mẫu đó làm bộ triệt. Điều này vẫn khiến các thực thể &xxx; HTML được chuyển đổi - bạn có thể sử dụng xml.sax.saxutils.unescape để làm điều đó:

source = """
Editors' Pick: Originally published March 22.
 
 Apple [AAPL - Get Report] is waking up the echoes with the reintroduction of a 4-inch iPhone, a model its creators hope will lead the company to victory not just in emerging markets, but at home as well.
 
"There's significant pent-up demand within Apple's base of iPhone owners who want a smaller iPhone with up-to-date specs and newer features," Jackdaw Research Chief Analyst Jan Dawson said in e-mailed comments.
 
The new model, dubbed the iPhone SE, "should unleash a decent upgrade cycle over the coming months," Dawson said. Prior to the iPhone 6 and 6 Plus, introduced in 2014, Apple's iPhones were small, at 3.5 inches and 4 inches tall, respectively, compared with models by Samsung and others that approached 6 inches.

 
"""

from pyparsing import anyOpenTag, anyCloseTag
from xml.sax.saxutils import unescape as unescape
unescape_xml_entities = lambda s: unescape[s, {"'": "'", """: '"', " ":" "}]

stripper = [anyOpenTag | anyCloseTag].suppress[]

print[unescape_xml_entities[stripper.transformString[source]]]

gives:

Editors' Pick: Originally published March 22.  Apple [AAPL - Get Report] is waking up the echoes with the reintroduction of a 4-inch iPhone, a model its creators hope will lead the company to victory not just in emerging markets, but at home as well. 
"There's significant pent-up demand within Apple's base of iPhone owners who want a smaller iPhone with up-to-date specs and newer features," Jackdaw Research Chief Analyst Jan Dawson said in e-mailed comments. 
The new model, dubbed the iPhone SE, "should unleash a decent upgrade cycle over the coming months," Dawson said. Prior to the iPhone 6 and 6 Plus, introduced in 2014, Apple's iPhones were small, at 3.5 inches and 4 inches tall, respectively, compared with models by Samsung and others that approached 6 inches.

[Và trong tương lai, vui lòng không cung cấp văn bản hoặc mã mẫu dưới dạng hình ảnh không thể sao chép.]

Đầu tuần này, tôi cần xóa một số thẻ HTML khỏi văn bản, chuỗi đích đã được lưu với các thẻ HTML trong cơ sở dữ liệu và một trong những yêu cầu chỉ định rằng trong một trang cụ thể, chúng tôi cần hiển thị nó dưới dạng văn bản thô.

Ngay từ đầu tôi đã biết rằng các biểu thức thông thường có thể áp dụng cho thử thách này, nhưng vì tôi không phải là một chuyên gia với các biểu thức thường xuyên, tôi đã tìm kiếm một số lời khuyên trong Stack Overflow và sau đó tôi tìm thấy những gì tôi thực sự cần.

Dưới đây là chức năng tôi đã xác định:

def remove_html_tags[text]:
    """Remove html tags from a string"""
    import re
    clean = re.compile['']
    return re.sub[clean, '', text]

Vì vậy, ý tưởng là xây dựng một biểu thức thông thường có thể tìm thấy tất cả các ký tự là một tỷ lệ đầu tiên trong một văn bản và sau đó, sử dụng hàm phụ, chúng ta có thể thay thế tất cả các văn bản giữa các ký hiệu đó bằng một chuỗi trống.

Hãy xem điều này trong vỏ:

Hy vọng điều này có thể giúp bạn!

Mục lục #

1. Dải các thẻ HTML từ một chuỗi trong Python
2. Dải các thẻ HTML từ chuỗi bằng cách sử dụng regex trong python

Dải các thẻ HTML từ một chuỗi trong python #

Để tước các thẻ HTML từ một chuỗi trong Python:

1. Mở rộng từ lớp HTMLParser từ mô -đun html.parser.
2. Thực hiện phương thức

   Editors' Pick: Originally published March 22.  Apple [AAPL - Get Report] is waking up the echoes with the reintroduction of a 4-inch iPhone, a model its creators hope will lead the company to victory not just in emerging markets, but at home as well. 
   "There's significant pent-up demand within Apple's base of iPhone owners who want a smaller iPhone with up-to-date specs and newer features," Jackdaw Research Chief Analyst Jan Dawson said in e-mailed comments. 
   The new model, dubbed the iPhone SE, "should unleash a decent upgrade cycle over the coming months," Dawson said. Prior to the iPhone 6 and 6 Plus, introduced in 2014, Apple's iPhones were small, at 3.5 inches and 4 inches tall, respectively, compared with models by Samsung and others that approached 6 inches.
   

   0 để lấy dữ liệu giữa các thẻ HTML.
3. Lưu trữ dữ liệu trong một danh sách trên thể hiện lớp.
4. Gọi phương thức

   Editors' Pick: Originally published March 22.  Apple [AAPL - Get Report] is waking up the echoes with the reintroduction of a 4-inch iPhone, a model its creators hope will lead the company to victory not just in emerging markets, but at home as well. 
   "There's significant pent-up demand within Apple's base of iPhone owners who want a smaller iPhone with up-to-date specs and newer features," Jackdaw Research Chief Analyst Jan Dawson said in e-mailed comments. 
   The new model, dubbed the iPhone SE, "should unleash a decent upgrade cycle over the coming months," Dawson said. Prior to the iPhone 6 and 6 Plus, introduced in 2014, Apple's iPhones were small, at 3.5 inches and 4 inches tall, respectively, compared with models by Samsung and others that approached 6 inches.
   

   1 trên một thể hiện của lớp.

Copied!
from html.parser import HTMLParser


class MLRemover[HTMLParser]:
    def __init__[self]:
        super[].__init__[convert_charrefs=False]
        self.reset[]
        self.convert_charrefs = True
        self.fed = []

    def handle_data[self, data]:
        self.fed.append[data]

    def handle_entityref[self, name]:
        self.fed.append[f'&{name};']

    def handle_charref[self, name]:
        self.fed.append[f'&#{name};']

    def get_data[self]:
        return ''.join[self.fed]


def strip_html[value]:
    remover = MLRemover[]

    remover.feed[value]
    remover.close[]
    return remover.get_data[]


my_html = """

  
First line
  
Second line
  
Third line

"""


# First line
# Second line
# Third line

print[strip_html[my_html]]

Cuộn xuống phân nhóm tiếp theo nếu bạn thích giải pháp regexp.

Chúng tôi mở rộng từ lớp HTMLParser. Đoạn mã rất giống với mô -đun được sử dụng bên trong bởi mô -đun

Editors' Pick: Originally published March 22.  Apple [AAPL - Get Report] is waking up the echoes with the reintroduction of a 4-inch iPhone, a model its creators hope will lead the company to victory not just in emerging markets, but at home as well. 
"There's significant pent-up demand within Apple's base of iPhone owners who want a smaller iPhone with up-to-date specs and newer features," Jackdaw Research Chief Analyst Jan Dawson said in e-mailed comments. 
The new model, dubbed the iPhone SE, "should unleash a decent upgrade cycle over the coming months," Dawson said. Prior to the iPhone 6 and 6 Plus, introduced in 2014, Apple's iPhones were small, at 3.5 inches and 4 inches tall, respectively, compared with models by Samsung and others that approached 6 inches.

Lớp HTMLParser được sử dụng để tìm các thẻ và các chức năng đánh dấu và gọi người xử lý khác.

Dữ liệu giữa các thẻ HTML được chuyển từ trình phân tích cú pháp sang lớp dẫn xuất bằng cách gọi

Editors' Pick: Originally published March 22.  Apple [AAPL - Get Report] is waking up the echoes with the reintroduction of a 4-inch iPhone, a model its creators hope will lead the company to victory not just in emerging markets, but at home as well. 
"There's significant pent-up demand within Apple's base of iPhone owners who want a smaller iPhone with up-to-date specs and newer features," Jackdaw Research Chief Analyst Jan Dawson said in e-mailed comments. 
The new model, dubbed the iPhone SE, "should unleash a decent upgrade cycle over the coming months," Dawson said. Prior to the iPhone 6 and 6 Plus, introduced in 2014, Apple's iPhones were small, at 3.5 inches and 4 inches tall, respectively, compared with models by Samsung and others that approached 6 inches.

Khi

Editors' Pick: Originally published March 22.  Apple [AAPL - Get Report] is waking up the echoes with the reintroduction of a 4-inch iPhone, a model its creators hope will lead the company to victory not just in emerging markets, but at home as well. 
"There's significant pent-up demand within Apple's base of iPhone owners who want a smaller iPhone with up-to-date specs and newer features," Jackdaw Research Chief Analyst Jan Dawson said in e-mailed comments. 
The new model, dubbed the iPhone SE, "should unleash a decent upgrade cycle over the coming months," Dawson said. Prior to the iPhone 6 and 6 Plus, introduced in 2014, Apple's iPhones were small, at 3.5 inches and 4 inches tall, respectively, compared with models by Samsung and others that approached 6 inches.

Editors' Pick: Originally published March 22.  Apple [AAPL - Get Report] is waking up the echoes with the reintroduction of a 4-inch iPhone, a model its creators hope will lead the company to victory not just in emerging markets, but at home as well. 
"There's significant pent-up demand within Apple's base of iPhone owners who want a smaller iPhone with up-to-date specs and newer features," Jackdaw Research Chief Analyst Jan Dawson said in e-mailed comments. 
The new model, dubbed the iPhone SE, "should unleash a decent upgrade cycle over the coming months," Dawson said. Prior to the iPhone 6 and 6 Plus, introduced in 2014, Apple's iPhones were small, at 3.5 inches and 4 inches tall, respectively, compared with models by Samsung and others that approached 6 inches.

Nếu

Editors' Pick: Originally published March 22.  Apple [AAPL - Get Report] is waking up the echoes with the reintroduction of a 4-inch iPhone, a model its creators hope will lead the company to victory not just in emerging markets, but at home as well. 
"There's significant pent-up demand within Apple's base of iPhone owners who want a smaller iPhone with up-to-date specs and newer features," Jackdaw Research Chief Analyst Jan Dawson said in e-mailed comments. 
The new model, dubbed the iPhone SE, "should unleash a decent upgrade cycle over the coming months," Dawson said. Prior to the iPhone 6 and 6 Plus, introduced in 2014, Apple's iPhones were small, at 3.5 inches and 4 inches tall, respectively, compared with models by Samsung and others that approached 6 inches.

Editors' Pick: Originally published March 22.  Apple [AAPL - Get Report] is waking up the echoes with the reintroduction of a 4-inch iPhone, a model its creators hope will lead the company to victory not just in emerging markets, but at home as well. 
"There's significant pent-up demand within Apple's base of iPhone owners who want a smaller iPhone with up-to-date specs and newer features," Jackdaw Research Chief Analyst Jan Dawson said in e-mailed comments. 
The new model, dubbed the iPhone SE, "should unleash a decent upgrade cycle over the coming months," Dawson said. Prior to the iPhone 6 and 6 Plus, introduced in 2014, Apple's iPhones were small, at 3.5 inches and 4 inches tall, respectively, compared with models by Samsung and others that approached 6 inches.

def remove_html_tags[text]:
    """Remove html tags from a string"""
    import re
    clean = re.compile['']
    return re.sub[clean, '', text]

def remove_html_tags[text]:
    """Remove html tags from a string"""
    import re
    clean = re.compile['']
    return re.sub[clean, '', text]

Phương pháp

Editors' Pick: Originally published March 22.  Apple [AAPL - Get Report] is waking up the echoes with the reintroduction of a 4-inch iPhone, a model its creators hope will lead the company to victory not just in emerging markets, but at home as well. 
"There's significant pent-up demand within Apple's base of iPhone owners who want a smaller iPhone with up-to-date specs and newer features," Jackdaw Research Chief Analyst Jan Dawson said in e-mailed comments. 
The new model, dubbed the iPhone SE, "should unleash a decent upgrade cycle over the coming months," Dawson said. Prior to the iPhone 6 and 6 Plus, introduced in 2014, Apple's iPhones were small, at 3.5 inches and 4 inches tall, respectively, compared with models by Samsung and others that approached 6 inches.

def remove_html_tags[text]:
    """Remove html tags from a string"""
    import re
    clean = re.compile['']
    return re.sub[clean, '', text]

Phương thức str.join lấy một điều đáng tin cậy như một đối số và trả về một chuỗi là sự kết hợp của các chuỗi trong điều kiện có thể sử dụng được.

Hàm

def remove_html_tags[text]:
    """Remove html tags from a string"""
    import re
    clean = re.compile['']
    return re.sub[clean, '', text]

Copied!
def strip_html[value]:
    remover = MLRemover[]

    remover.feed[value]
    remover.close[]
    return remover.get_data[]


my_html = """

  
First line
  
Second line
  
Third line

"""


# First line
# Second line
# Third line

print[strip_html[my_html]]

Hàm khởi tạo lớp và cung cấp cho chuỗi chứa các thẻ HTML vào trình phân tích cú pháp.

Bước tiếp theo là gọi phương thức

def remove_html_tags[text]:
    """Remove html tags from a string"""
    import re
    clean = re.compile['']
    return re.sub[clean, '', text]

Cuối cùng, chúng tôi gọi phương thức

Editors' Pick: Originally published March 22.  Apple [AAPL - Get Report] is waking up the echoes with the reintroduction of a 4-inch iPhone, a model its creators hope will lead the company to victory not just in emerging markets, but at home as well. 
"There's significant pent-up demand within Apple's base of iPhone owners who want a smaller iPhone with up-to-date specs and newer features," Jackdaw Research Chief Analyst Jan Dawson said in e-mailed comments. 
The new model, dubbed the iPhone SE, "should unleash a decent upgrade cycle over the coming months," Dawson said. Prior to the iPhone 6 and 6 Plus, introduced in 2014, Apple's iPhones were small, at 3.5 inches and 4 inches tall, respectively, compared with models by Samsung and others that approached 6 inches.

Ngoài ra, bạn có thể sử dụng một biểu thức thông thường.

Dải các thẻ HTML từ một chuỗi bằng regex trong python #

Sử dụng phương thức

def remove_html_tags[text]:
    """Remove html tags from a string"""
    import re
    clean = re.compile['']
    return re.sub[clean, '', text]

def remove_html_tags[text]:
    """Remove html tags from a string"""
    import re
    clean = re.compile['']
    return re.sub[clean, '', text]

def remove_html_tags[text]:
    """Remove html tags from a string"""
    import re
    clean = re.compile['']
    return re.sub[clean, '', text]

Copied!
import re

html_string = """

  
First
  
Second
  
Third

"""

result = re.sub[r'', '', html_string]

# First
# Second
# Third

print[result]

Phương thức Re.sub trả về một chuỗi mới thu được bằng cách thay thế các lần xuất hiện của mẫu bằng thay thế được cung cấp.

Nếu mẫu không được tìm thấy, chuỗi được trả về như vậy.

Đối số đầu tiên chúng tôi đã chuyển sang phương pháp

def remove_html_tags[text]:
    """Remove html tags from a string"""
    import re
    clean = re.compile['']
    return re.sub[clean, '', text]

Dấu ngoặc

Copied!
from html.parser import HTMLParser


class MLRemover[HTMLParser]:
    def __init__[self]:
        super[].__init__[convert_charrefs=False]
        self.reset[]
        self.convert_charrefs = True
        self.fed = []

    def handle_data[self, data]:
        self.fed.append[data]

    def handle_entityref[self, name]:
        self.fed.append[f'&{name};']

    def handle_charref[self, name]:
        self.fed.append[f'&#{name};']

    def get_data[self]:
        return ''.join[self.fed]


def strip_html[value]:
    remover = MLRemover[]

    remover.feed[value]
    remover.close[]
    return remover.get_data[]


my_html = """

  
First line
  
Second line
  
Third line

"""


# First line
# Second line
# Third line

print[strip_html[my_html]]

Copied!
from html.parser import HTMLParser


class MLRemover[HTMLParser]:
    def __init__[self]:
        super[].__init__[convert_charrefs=False]
        self.reset[]
        self.convert_charrefs = True
        self.fed = []

    def handle_data[self, data]:
        self.fed.append[data]

    def handle_entityref[self, name]:
        self.fed.append[f'&{name};']

    def handle_charref[self, name]:
        self.fed.append[f'&#{name};']

    def get_data[self]:
        return ''.join[self.fed]


def strip_html[value]:
    remover = MLRemover[]

    remover.feed[value]
    remover.close[]
    return remover.get_data[]


my_html = """

  
First line
  
Second line
  
Third line

"""


# First line
# Second line
# Third line

print[strip_html[my_html]]

DOT

Copied!
from html.parser import HTMLParser


class MLRemover[HTMLParser]:
    def __init__[self]:
        super[].__init__[convert_charrefs=False]
        self.reset[]
        self.convert_charrefs = True
        self.fed = []

    def handle_data[self, data]:
        self.fed.append[data]

    def handle_entityref[self, name]:
        self.fed.append[f'&{name};']

    def handle_charref[self, name]:
        self.fed.append[f'&#{name};']

    def get_data[self]:
        return ''.join[self.fed]


def strip_html[value]:
    remover = MLRemover[]

    remover.feed[value]
    remover.close[]
    return remover.get_data[]


my_html = """

  
First line
  
Second line
  
Third line

"""


# First line
# Second line
# Third line

print[strip_html[my_html]]

Asterisk

Copied!
from html.parser import HTMLParser


class MLRemover[HTMLParser]:
    def __init__[self]:
        super[].__init__[convert_charrefs=False]
        self.reset[]
        self.convert_charrefs = True
        self.fed = []

    def handle_data[self, data]:
        self.fed.append[data]

    def handle_entityref[self, name]:
        self.fed.append[f'&{name};']

    def handle_charref[self, name]:
        self.fed.append[f'&#{name};']

    def get_data[self]:
        return ''.join[self.fed]


def strip_html[value]:
    remover = MLRemover[]

    remover.feed[value]
    remover.close[]
    return remover.get_data[]


my_html = """

  
First line
  
Second line
  
Third line

"""


# First line
# Second line
# Third line

print[strip_html[my_html]]

Thêm một dấu hỏi

Copied!
from html.parser import HTMLParser


class MLRemover[HTMLParser]:
    def __init__[self]:
        super[].__init__[convert_charrefs=False]
        self.reset[]
        self.convert_charrefs = True
        self.fed = []

    def handle_data[self, data]:
        self.fed.append[data]

    def handle_entityref[self, name]:
        self.fed.append[f'&{name};']

    def handle_charref[self, name]:
        self.fed.append[f'&#{name};']

    def get_data[self]:
        return ''.join[self.fed]


def strip_html[value]:
    remover = MLRemover[]

    remover.feed[value]
    remover.close[]
    return remover.get_data[]


my_html = """

  
First line
  
Second line
  
Third line

"""


# First line
# Second line
# Third line

print[strip_html[my_html]]

Ví dụ: sử dụng biểu thức thông thường

Copied!
from html.parser import HTMLParser


class MLRemover[HTMLParser]:
    def __init__[self]:
        super[].__init__[convert_charrefs=False]
        self.reset[]
        self.convert_charrefs = True
        self.fed = []

    def handle_data[self, data]:
        self.fed.append[data]

    def handle_entityref[self, name]:
        self.fed.append[f'&{name};']

    def handle_charref[self, name]:
        self.fed.append[f'&#{name};']

    def get_data[self]:
        return ''.join[self.fed]


def strip_html[value]:
    remover = MLRemover[]

    remover.feed[value]
    remover.close[]
    return remover.get_data[]


my_html = """

  
First line
  
Second line
  
Third line

"""


# First line
# Second line
# Third line

print[strip_html[my_html]]

Copied!
from html.parser import HTMLParser


class MLRemover[HTMLParser]:
    def __init__[self]:
        super[].__init__[convert_charrefs=False]
        self.reset[]
        self.convert_charrefs = True
        self.fed = []

    def handle_data[self, data]:
        self.fed.append[data]

    def handle_entityref[self, name]:
        self.fed.append[f'&{name};']

    def handle_charref[self, name]:
        self.fed.append[f'&#{name};']

    def get_data[self]:
        return ''.join[self.fed]


def strip_html[value]:
    remover = MLRemover[]

    remover.feed[value]
    remover.close[]
    return remover.get_data[]


my_html = """

  
First line
  
Second line
  
Third line

"""


# First line
# Second line
# Third line

print[strip_html[my_html]]