Search DaniWeb - preg_match

Question Answering with YouTube Videos Using RAG in LangChain 6 Days Ago by usmanmalik57 In previous articles, I explained how to use natural language to interact with [PDF documents](https://www.daniweb.com/programming/computer-science/tutorials/541732/paris-olympics-ticket-information-chatbot-with-memory-using-langchain) and [SQL databases](https://www.daniweb.com/programming/computer-science/tutorials/541771/using-natural-language-… Re: Backlink Indexing issue 1 Day Ago by Dani Make sure the backlinks are on pages that are not noindexed (they neither have a meta noindex tag nor a noindex http header), as well as the pages’ URLs not matching any rule on their website’s robots.txt file. Additionally, make sure that the page on your own website the backlink points to doesn’t match a rule on your site’s own robots.txt … Re: How to query database using variable and get all results not just one row 1 Week Ago by Chris_103 To retrieve all records associated with the current user, you can use the fetchAll() method instead of fetch(). Here's how you can modify your code: ```php // Query database to retrieve records associated with the user $sql = "SELECT * FROM table_name WHERE variable_name = :variable_name"; $stmt = $conn->prepare($sql); $stmt->… Extracting values from a regex match 2 Months Ago by Tom_45 I am trying to extract three values from the td tags in an html downloaded file. <tr align="right"><td>236</td><td>Roy</td><td>Allyson</td> <tr align="right"><td>237</td><td>Marvin</td><td>Pamela</td> <tr align="right"><td… Why am getting different syntax errors when running a Python script 2 Months Ago by Tom_45 I am working on an exercise from Google's Python class dealing with popular baby names. I have the program running properly when using only one filename, but when I try to use the wildcard to get all files with baby####.html files I get differing errors every time I run the program. Here is the problem code: matches = re.findall('<… Re: Extracting values from capturing groups in regex 2 Months Ago by AndreRet Your main issue is with the way you're trying to capture the values inside the 'td' tags. Also, you should consider using non-greedy quantifiers - [Minimal or non-greedy quantifiers](Regular expressions are generally considered greedy because an expression with repetitions will attempt to match as many characters as possible. The asterisk (*), plus… Converting PDF Image to CSV Using Multimodal Google Gemini Pro 2 Months Ago by usmanmalik57 In this article, you will learn to use [Google Gemini Pro](https://blog.google/technology/ai/google-gemini-ai/), a state-of-the-art multimodal generative model, to extract information from PDF and convert it to CSV files. You will use a simple text prompt to tell Google Gemini Pro about the information you want to extract. This is a valuable skill … PDF Image Table Extractor Web App with Google Gemini Pro and Streamlit 2 Months Ago by usmanmalik57 In my previous article, I explained [how to convert PDF image to CSV using Multimodal Google Gemini Pro](https://www.daniweb.com/programming/computer-science/tutorials/541365/converting-pdf-image-to-csv-using-multimodal-google-gemini-pro). To do so, I wrote a Python script that passes text command to [Google Gemino Pro](https://blog.google/… Extracting values from capturing groups in regex 2 Months Ago by Tom_45 I am trying to extract three values from the td tags in an html downloaded file. <tr align="right"><td>236</td><td>Roy</td><td>Allyson</td> <tr align="right"><td>237</td><td>Marvin</td><td>Pamela</td> <tr align="right"><td… Re: Extracting values from capturing groups in regex 2 Months Ago by Reverend Jim For html = '<tr align="right"><td>236</td><td>Roy</td><td>Allyson</td>' pat = '<td>(.+?)</td>' then re.split(pat,html) returns ['<tr align="right">', '236', '', 'Roy', '', 'Allyson', ''] and re.split(pat,html)[1::2] will … Re: Extracting values from a regex match 2 Months Ago by Reverend Jim The trick is to use lazy matching which matches the shortest possible string. html = '<tr align="right"><td>236</td><td>Roy</td><td>Allyson</td>' pat = '<td>(.+?)</td>' then re.split(pat,html) returns ['<tr align="right">', '236', … Re: Extracting values from a regex match 2 Months Ago by pritaeas Sidenote: If you want to learn, understand and experiment with regexes I can highly recommend RegexBuddy. Re: Extracting values from a regex match 2 Months Ago by Reverend Jim Also [autoregex](https://www.autoregex.xyz/) Re: Extracting values from a regex match 2 Months Ago by AndreRet Same question, different post - [Extracting values from capturing groups in rege](https://www.daniweb.com/programming/software-development/threads/541420/extracting-values-from-capturing-groups-in-regex) Re: Extracting values from a regex match 1 Month Ago by Tom_45 Question has been answered. The correct pattern is: matches = re.findall(r'<td>(\d+)+<\/td><td>(\w+)<\/td><td>(\w+)', file) Re: Why am getting different syntax errors when running a Python script 2 Months Ago by Tom_45 After I posted this question I noticed that I was missing the raw string indicator and the capture group enclosing parenthesis on the findall, which explains the subscripting error. So, hold off on the answers for now. I'm still having other issues with multiple file runs, though. Re: Why am getting different syntax errors when running a Python script 2 Months Ago by Tom_45 Finished the assignment and was able to work out the bugs I was encountering. In addition to the issues I mentioned in my last reply, I had several instances of not indenting properly so that statements like exit() were not executing because their indention made them part of an if statement. Re: Track Faces from Videos with Margins Using Deep Learning in Python 2 Months Ago by EdwardMatthew It's fantastic, I have read this article and it is super amazing. thankyou for the knowledge. Re: Extracting values from capturing groups in regex 2 Months Ago by Tom_45 I'm not getting the results you presented, I'm getting the whole file not just the tr tags. The tr tags I used was just a subset of the entire file. Re: Extracting values from capturing groups in regex 2 Months Ago by Reverend Jim Just process the file line by line and apply the regular expression to particular lines. I can't give you an expression that matches only the lines you showed me with a guarantee that in matches nothing else without seeing the entire file. Re: Extracting values from capturing groups in regex 2 Months Ago by Reverend Jim You can either read the entire file into a list, then filter that list, or you could process it line by line and process each matching line. For example (using my file) for line in open('usblog.txt'): if '2024-01-24' in line: print(line) or text = open('usblog.txt').readlines() for line in [x for x in text if… Re: Extracting values from capturing groups in regex 2 Months Ago by Tom_45 It's a long one, but here it is. <head><title>Popular Baby Names</title> <meta name="dc.language" scheme="ISO639-2" content="eng"> <meta name="dc.creator" content="OACT"> <meta name="lead_content_manager" content="JeffK"&… Re: Extracting values from capturing groups in regex 2 Months Ago by Reverend Jim Try import re pat = '<td>(.+?)</td>' for line in open('yourfile.html'): if line.startswith('<tr align="right"><td>'): print(re.findall(pat,line)) I realized that findall is cleaner than split. You might want to have a look at [this regex online tool](https://www… Re: Extracting values from capturing groups in regex 2 Months Ago by Tom_45 Issue resolved Preg match and replace for img urls 15 Years Ago by ade92uk I have used preg match to find in a page all img tags: [CODE]<(img)[^>]*?>[/CODE] Can someone please tell me how i would check if it has a full url and if it does not replace it with a full url from a variable called $link2. I would also like to be able to process urls which have change directory such as: ../images/example.gif --&… help with preg match 16 Years Ago by realnsleo hi...i want to use the preg match function to verify a string that should have the format format of a year - two digits - two letters - two digits, like this: [in]2005-03-IT-031[/in] thanks possible to layer preg match? 13 Years Ago by andrewliu … layer my preg_matches? I have a code like this [CODE] preg_match("/\<div class=\"dealsListS\"\>(.*?)\<\/div… Re: Regular expression match 12 Years Ago by subrata_ushasi Hi, I think this link will help you. [url]http://php.net/manual/en/function.preg-match.php[/url] Search for an exact match 14 Years Ago by tulipputih Hello, anybody can suggest me on how to do exact match in php ( for search purpose). From my reading I understand that we need to use " ". What is the correct syntax for this? Is preg-match important here. Thank you. Re: preg_match - where do I err? 12 Years Ago by Stefano Mtangoo [QUOTE=Insensus;1589326][code]$regex = '/^[0-9]{5,}\/[a-zA-Z]\.[0-9]{2,}$/';[/code][/QUOTE] Thanks a lot, someone answered [URL="http://stackoverflow.com/questions/6472339/preg-match-where-do-i-err"]here[/URL]. Can I know why is / escaped? I thought only \ is escaped :-O Also doe these two differ as far as regex is concerned? [code]$…