Finding a random sentence in HTML with python regex

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I'm trying to write a small function for another script that pulls the generated text from "http://subfusion.net/cgi-bin/quote.pl?quote=humorists&number=1" Essentially, I need it to pull whatever sentence is between < br> tags.

I've been trying my darndest using regular expressions, but I never really could get the hang of those. All of the searching I did turned up things for pulling either specific sentences, or single words. This however needs to pull whatever arbitrary string is between < br> tags.

Can anyone help me out? Thanks.

Best I could come up with:

html = urlopen("http://subfusion.net/cgi-bin/quote.pl?quote=humorists&number=1").read()
output = re.findall('\<br>.*\<br>', html)

EDIT: Ended up going with a different approach all together, simply splitting the HTML in a list seperated by < br> and pulling [3], made for cleaner code and less string operations. Keeping this question up for future reference and other people with similar questions.

You need to use the DOTALL flag as there are newlines in the expression that you need to match. I would use

re.findall('<br>(.*?)<br>', html, re.S)

However will return multiple results as there are a bunch of <br><br> on that page. You may want to use the more specific:

re.findall('<hr><br>(.*?)<br><hr>', html, re.S)

How do I scrape a randomly generated sentence from this website , You will find more details here Using python Requests with js pages When I run your code I get a blob of html output. <p>If you're visiting this page, you're likely here because you're searching for a random sentence. In this tutorial, you will learn about regular expressions (RegEx), and use Python's re module to work with RegEx (with the help of examples). A Re gular Ex pression (RegEx) is a sequence of characters that defines a search pattern.

from urllib import urlopen
import re
html = urlopen("http://subfusion.net/cgi-bin/quote.pl?quote=humorists&number=1").read()
output = re.findall('<body>.*?>\n*([^<]{5,})<.*?</body>', html, re.S)

if (len(output) > 0):
    print(output)
    output = re.sub('\n', ' ', output[0])
    output = re.sub('\t', '', output)
    print(output)

Terminal

imac2011:Desktop allendar$ python test.py 
['A black cat crossing your path signifies that the animal is going somewhere.\n\t\t-- Groucho Marx\n\n']

A black cat crossing your path signifies that the animal is going somewhere. -- Groucho Marx

You could also strip of the final \n's and replace all those inside the text (on longer quotes) with <br /> if you are displaying it in HTML again, so you would maintain the original line breaks visually.

7.2. re — Regular expression operations — Python v3.1.5 , This module provides regular expression matching operations similar to those Regular expressions use the backslash character ('\') to indicate special forms or the characters in each word of a sentence except for the first and last characters: >>> def repl(m): inner_word = list(m.group(2)) random.shuffle( inner_word)� RegEx Module. Python has a built-in package called re, which can be used to work with Regular Expressions.. Import the re module:

All jokes of that page have the same model, no ambigous things, you can use this

output = re.findall('(?<=<br>\s)[^<]+(?=\s{2}<br)', html)

No need to use the dotall flag cause there's no dot.

Regular Expression HOWTO — Python 3.4.10 documentation, this set might contain English sentences, or e-mail addresses, or TeX commands, or anything you For example, the regular expression test will match the string test exactly. Now imagine matching this RE against the string abcbd. (Note that parsing HTML or XML with regular expressions is painful. 6.2.1. Regular Expression Syntax¶. A regular expression (or RE) specifies a set of strings that matches it; the functions in this module let you check if a particular string matches a given regular expression (or if a given regular expression matches a particular string, which comes down to the same thing).

This is uh, 7 years later, but for future reference:

Use the beautifulsoup library for these kind of purposes, as suggested by Floris in the comments.

6.2. re — Regular expression operations — Python 3.4.10 , This module provides regular expression matching operations similar to Regular expressions use the backslash character ('\') to indicate special forms or to characters in each word of a sentence except for the first and last characters: >>> >>> def repl(m): inner_word = list(m.group(2)) random.shuffle( inner_word)� Method #2 : Using regex( findall() ) In the cases which contain all the special characters and punctuation marks, as discussed above, the conventional method of finding words in string using split can fail and hence requires regular expressions to perform this task.

Python Tutorial: Regular Expression, General introduction into Regular Expression and their usage in Python. You can find an implementation of a Finite State Machine in Python on our website. matches all file names (strings) which start with an "a" and end with ".html". treatise about back references, we want to strew in a paragraph about match objects,� Extracting email addresses using regular expressions in Python Python Programming Server Side Programming Email addresses are pretty complex and do not have a standard being followed all over the world which makes it difficult to identify an email in a regex.

Chapter 7 Pattern matching with regular expressions, Regular expressions go one step further: They allow you to specify a pattern of I'll show you basic matching with regular expressions and then move on to some The regex \d\d\d-\d\d\d-\d\d\d\d is used by Python to match the same text the in the official Python documentation at http://docs.python.org/3/library/re.html. Find all the patterns of “1(0+)1” in a given string using Python Regex; Verbose in Python Regex; Name validation using IGNORECASE in Python Regex; Python Regex: re.search() VS re.findall() Pattern matching in Python with Regex; Convert Text and Text File to PDF using Python; The most occurring number in a string using Regex in python

Python Regular Expression Tutorial, Python regular expression (regex) tutorial for beginners. It is similar to match() but it doesn't restrict us to find matches at the beginning of the string only. you can refer this link (https://docs.python.org/2/library/re.html). A regular expression is a special sequence of characters that helps you match or find other strings or sets of strings, using a specialized syntax held in a pattern. Regular expressions are widely used in UNIX world. The Python module re provides full support for Perl-like regular expressions in Python. The re module raises the exception re

Comments
  • Google "beautiful soup" and you will be enlightened...
  • Beautiful soup is now my new favourite import, thank you @Floris
  • I am glad to hear it. It really is spectacularly good, isn't it. But what a crazy name...