No you will have to download the files from the Python tutorials on the Spoken website. Also, if you are on windows, make sure you use !type command instead of the cat command
cat is a command used to display the content of the files in linux.
In windows cat command will not work.
Kindly open the file manually using Notepad or any available text editor.
OR you can also use !type primes.txt
<span style="color: rgb(85, 85, 85); font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 13px;">are primes.txt and pendulum.txt in built files? when I tried opening the files ,gives error.</span>