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

For strings, it is probably the easiest to use rstrip():

In [2]: s = '23989800000'

In [3]: len(s) - len(s.rstrip('0'))
Out[3]: 5