Why are rpartition() and partition() two seperate methods?

I get that one searches for the last occurrence of a specified string and the other searches for the first but is there a way to search for a specified string at any occurrence without alternating between rpartition() and partition()?

I tried something like:

txt = “I could eat bananas all day, bananas are my favorite fruit”

x = txt.partition(“bananas”, 1)

print(x)

Did not work.