十进制转二进制，python转换代码

十进制转换成二进制

• 代码如下（指数无法确定）

  `y = eval(input('the number : '))

if y>0:

sign = 0

else:

sign = 1

x = abs(y)

a = int(x)

e = bin(a).replace('0b','')

f = e[0].strip('0') + e[1:]

b = x-a

c = bin(len(bin(a))+126).replace('0b','')

i = b

a = 1

even = []

while a <9 :

i *= 2

even.append(int(i))

i = i - int(i)

a += 1

list = [str(n) for n in even ]

list2 = ''.join(list)

print(str(sign)+str(c)+str(f)+list2)

`

• 请各位帮忙纠错，谢谢。