### Scrapy 2.6.3 Compatible Twisted Version For ensuring compatibility between Scrapy and Twisted, it is important to consult the official documentation or release notes of Scrapy. Typically, Scrapy specifies its dependencies including a range of compatible versions for libraries like Twisted within its setup configuration. To find a specific version of Twisted that works with Scrapy 2.6.3, one approach involves checking the `setup.py` file or the environment.yml if available from the Scrapy project repository at the time of this version's release. According to best practices in dependency management, projects such as Scrapy often define minimum required versions or even exact versions needed for their operation[^1]. A common method to install an appropriate version of Twisted would be using pip with constraints specified by Scrapy’s requirements.txt or similar files which pin down necessary package versions: ```bash pip install "twisted>=20.3.0,<22.0.0" ``` This command installs a version of Twisted greater than or equal to 20.3.0 but less than 22.0.0, aligning with what might have been tested against Scrapy 2.6.3 based on historical data about library compatibilities during that period[^2]. Note that precise version numbers should ideally come directly from Scrapy’s own installation instructions or tests conducted around the release date of Scrapy 2.6.3.