How do I count the trailing zeros in integer?

Question

I am trying to write a function that returns the number of trailing 0s in a string or integer. Here is what I am trying and it is not returning the correct values.

Answer 1

I found two ways to achieve this, one is already mentioned above and the other is almost similar:

manipulandum.count('0') - manipulandum.rstrip('0').count('0')

But still, I'm looking for some better answer.