Sed to remove everything after “.” in file using * command?

Question

I have the following data.txt:

 95 flour.
 47 water.s
 etc..

I need to remove everything after the period (.) in the file to yield s

Answer 1

This seemed to work:

sed "s/[.].*//" data.txt > cleaned.txt

I would be interested to know how this can be done alternatively in bash and python, if anyone wouldn't mind sharing?

Thanks!