请教一下红字那一行:
x = raw_input("input a binary number : ")
result = 0
y = 1
for i in range(len(x)-1,-1,-1):
d = int(x[i])
result = result + d*y
y = y*2
print("the decimal equivalent of %s os %s" %(x,result))
请问,(len(x)-1,-1,-1) 里面这三项,每项代表什么意思?
麻烦高手解答了......
ps:我只懂 range(1,x+1) 是指 1~x......