Dot notation string manipulation

Question

Is there a way to manipulate a string in Python using the following ways?

For any string that is stored in dot notation, for example:

s = \"classes.s         


        

Answer 1

if '.' in s, s.rpartition('.') finds last dot in s,
and returns (before_last_dot, dot, after_last_dot):

s = "classes.students.grades"
s.rpartition('.')[0]