Data Parsing Knowledgebase

How to scrape HTML table to Excel Spreadsheet (.xlsx)?

To scrape tables to Excel spreadsheet we can use bs4, requets and xlsxwriter packages for Python. Here's how.
How to parse dynamic CSS classes when web scraping?

Dynamic CSS can make be very difficult to scrape. There are a few tricks and common idioms to approach this though.
How to turn HTML to text in Python?

To turn HTML data to text in Python we can use BeautifulSoup's get_text() method which strips away HTML data and leaves text as is. Here's how.
Scraper doesn't see the data I see in the browser - why?

This means that scraper is not rendereding javascript that is changing the page contents. To verify this disable javascript in your browser.

Related

How to select last element in XPath?

To select last element in XPath we cannot use indexing as -1 index is not supported. Instead, last() function can be used. Here's how.
How to select dictionary key recursively in Python?

To select dictionary keys recursively in Python the "nested-lookup" package implements the most popular nested key selection algorithms.
What are some ways to parse JSON datasets in Python?

There are several popular options when it comes to JSON dataset parsing in Python. The most popular packages are Jmespath and Jsonpath.
How to select all elements between two elements in XPath?

To select all elements between two different elements preceding-sibling or following-sibling axis selectors can be used. Here's how.
What are devtools and how they're used in web scraping?

Developer tools suite is used in web development but can also be used in web scraping to understand how target websites work. Here's how to use it.
How to select HTML elements by text using CSS Selectors?

It's not possible to select HTML elements by text in original CSS selectors specification but here are some alternative ways to do it.
How to use CSS selectors in NodeJS when web scraping?

There are many ways to execute CSS selectors on HTML text in NodeJS but cheerio and osmosis libraries are the most popular ones. Here's how to use them.
How to use XPath selectors in NodeJS when web scraping?

To parse HTML using XPath in Nodejs we can use one of two popular libraries like osmosis or xmldom. Here's how.
How to use XPath selectors in Python?

Python has several options for executing XPath selectors against HTML. The most popular ones are lxml and parsel. Here's how to use them.
How to select elements by class in XPath?

To select HTML elements by class name in XPath we can use the @ attribute selector and comparison function contains(). Here's how to do it.
How to select elements by text in XPath?

To select elements by text using XPath, the contains() function can be used or re:test for selecting based on regular expression patterns.
How to find elements by CSS selector in Puppeteer?

To find HTML elements using CSS selectors in Puppeteer the $ and $eval methods can be used. Here's how to use them.
How to find elements by XPath in Puppeteer?

To find elements by XPath using Puppeteer the "$x()" method can be used which will execute XPath selection on the current page DOM.
How to find elements by CSS selector in Selenium

To select HTML elements by CSS selectors in Selenium the driver.find_element() method can be used with the By.CSS_SELECTOR option. Here's how to do it.
How to find elements without a specific attribute in BeautifulSoup?

To find HTML elements that do NOT contains a specific attribute we can use regular expression matching or lambda functions. Here's how to do it.

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