How to Dynamically Save Scrapy Data in CSV Files Based on Top Level Domain

Discover how to dynamically save scraped data using Scrapy in CSV files named after the top-level domains of the URLs you scrape. Step-by-step guide included!
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How to Dynamically Save Scrapy Data in CSV Files Based on Top Level Domain

Understanding the Problem

The goal is to ensure that each time you scrape data from a different domain, the resulting CSV file is named according to the scraped URL's top-level domain. Not only does this help in organizing your files better, but it also aids in easily accessing the scraped data related to specific domains without any confusion.

Step-by-Step Solution

To achieve the dynamic file naming in Scrapy, you will need to adjust the custom_settings in your Scrapy spider class. Here’s how you can do it.

1. Modify Your Spider's Custom Settings

In your spider, specifically within the custom_settings, you can define the format of the output files using the FEEDS option. Here’s the exact method to set the filename dynamically.

Example Code Adjustment

[[See Video to Reveal this Text or Code Snippet]]

This line of code indicates that Scrapy should save the CSV files in the scraped_urls directory and leverage %(file_name)s as a placeholder for the actual filename.

2. Defining the File Name

Next, you have to define what file_name will replace. You might want to set it based on the top-level domain. This can be done in the __init__ method of your spider class after determining the domain.

Example Code Snippet

[[See Video to Reveal this Text or Code Snippet]]

3. Complete Example

Integrating all the above changes, your complete spider might look something like this:

[[See Video to Reveal this Text or Code Snippet]]

Conclusion

With this configuration, you will successfully save your scraped data in a CSV file named dynamically based on the top-level domain of the URL you are scraping from. This method not only organizes your data effectively but also makes your scraping setup more efficient.
Happy Scraping!