Decimal to Binary

gistfile1.py

num =  256 

if num < 0:
  isNeg = True
  num = abs(num)
else:
  isNeg = False
result = ''
if num == 0:
  result = '0' 
while num > 0:
  result = str(num%2) + result
  num = num/2
if isNeg:
  result = '-' + result

print(result)

gistfile2.py

x = float(raw_input('Enter a decimal number between 0 and 1: '))

p = 0 
while ((2**p)*x)%1 !=0:
  print('Remember = ' + str((2**p)*x - int(2**p)*x))
  p += 1

num = int(x*(2**p))

result = ''
if num == 0:
  result = '0' 
while num > 0:
  result = str(num%2) + result
  num = num/2

for i in range(p - len(result)):
  result = '0' + result

result = result[0:-p] + '' + result[-p:]
print('The binary representation of the decimal ' + str(x) + ' is .' + str(result))