Quick Python Questions on encoding to write long list of digits to a file

From a storage standpoint, why is it more efficient to use ASCII encoding over UTF-8 encoding to write a long list of digits (0-9) to a file?

Also does anyone know what is the most efficient way to create an even smaller file to store the information? I was thinking UTF-16 but not so sure anymore after not being able to find any answer online.

Please help!!

https://stackoverflow.com/questions/67041089/quick-python-questions-on-encoding-to-write-long-list-of-digits-to-a-file April 11, 2021 at 11:05AM