Convert decimal to binary in python [duplicate]

Answer 1

For the sake of completion: if you want to convert fixed point representation to its binary equivalent you can perform the following operations:

1. Get the integer and fractional part.

   from decimal import *
   a = Decimal(3.625)
   a_split = (int(a//1),a%1)
   

2. Convert the fractional part in its binary representation. To achieve this multiply successively by 2.

   fr = a_split[1]
   str(int(fr*2)) + str(int(2*(fr*2)%1)) + ...
   

You can read the explanation here.

Answer 2

n=int(input('please enter the no. in decimal format: '))
x=n
k=[]
while (n>0):
    a=int(float(n%2))
    k.append(a)
    n=(n-a)/2
k.append(0)
string=""
for j in k[::-1]:
    string=string+str(j)
print('The binary no. for %d is %s'%(x, string))