http://www.simplestsolutions.net/binary-...
Here's their code:
#get the input
binaryString = str(input("Please enter a binary number"))
#if you want error checking this is where to put it
indexCounter = len(binaryString)-1 #starts at the end of the string
power = 0 #used to determine what power to raise to
sum = 0 #contains the total so far
#loop from the end of the input down to the start
while (indexCounter >= 0):
...sum = sum + pow(2,power)*int(binaryString[indexCount...
...indexCounter = indexCounter - 1
...power = power + 1
#Output the results:
print(binaryString,"as binary =",sum,"as decimal")
Is this the sort of thing you're after?
#!/usr/bin/python
#Bin2Dec.py
import math
binaryStr = raw_input("Enter binary number: ")
length = len(binaryStr)
decimal = 0
for i in range(length):
....if binaryStr[length-1-i] == "1":
.... ....decimal += math.pow(2,i)
print binaryStr, "in binary =", decimal, "in decimal."
#Note: I've used "...." to indicate tabs, which Y!Answers removes.
If you enter 100, have you entered one hundred or have you entered 4 in binary?
Are you going to enter a number 100 or a character string "100"?
Are you using Python 2.7 or Python 3.4?
