Python Programs: Binary to Decimal and Spy Number

1) Binary to Decimal

binary=int(input(“enter a number:))
decimal=0
power=0
while binary>0:
          digit=binary%10
          decimal=decimal+digit * 2 ** power
          binary=binary//10
          power+=1
print(“decimal=”,decimal)

O/P:enter a number:1011
decimal = 11

2)Spy Number

num=int(input(“enter a number:))
sum_of_digit=0
product=1
while num>0:
          digit=num%10
          sum_of_digit+=1
          product*=1
          num//10
if sum_of_digit==product:
       print(“spy number”)
else:
      print(“not a spy number”)
o/p: enter a number:1124
spy number