# End Zeros "Extra" Checking Is Not Working

## (Or at least I guess so)

Here's my code, it works properly, calculating the n° of zeros at the end of every number in binary.
The 'Extra' check is executed with 3456 as input.
My code output is 7 and is the correct n° of zeros.

(See the attached screenshot.)

def end_zeros(num: int) -> int:
print(num)
b=str(bin(num))
n=0
for i in range(len(b)-1,0,-1):
if b[i]=='1':
return n
else:
if b[i]== '0':
n=n+1
return n

if **name** == '**main**':
print("Example:")
print(end_zeros(100100))

# These "asserts" are used for self-checking and not for an auto-testing
assert end_zeros(0) == 1
assert end_zeros(1) == 0
assert end_zeros(10) == 1
assert end_zeros(101) == 0
assert end_zeros(245) == 0
assert end_zeros(100100) == 2
print("Coding complete? Click 'Check' to earn cool rewards!")

Created at: Dec. 8, 2021, 1:06 a.m.; Updated at: Dec. 10, 2021, 9:19 p.m.

The question is resolved.