What's wrong with the code?

Question

#Enter: 1010101100

sys_znach = input()
list_znach = list(sys_znach)
len_znach = len(list_znach) - 1
my_array = []

count = len_znach
i = 0
while i != len_znach:
while count != 0:
sys_x2 = int(list_znach[i])*(2**count)
my_array.append(sys_x2)
count -= 1
i += 1

print("Des system:",int(sum(my_array)))

It must convert the id of the binary system to decimal.

Answer 1

If you try in English maybe you could get more help

Answer 2

While I don't know py, your inner loop only executes once as count becomes 0 during it's first pass and never changes.