Python recursion returns None

Question

This will be really funny... Given following python codes:

def getBinary(binaryInput, kSize, beginBit):
    if int(binaryInput[beginBit + kSize-1])=         


        

Answer 1

The code is missing in the else part:

def getBinary(binaryInput, kSize, beginBit):
    if int(binaryInput[beginBit + kSize-1])==1:
        print 'entered!!!'
        shortE = binaryInput[beginBit:kSize+beginBit]
        print 'shortE is now: ', shortE
        print 'kSize is now: ', kSize
        return (shortE,kSize)
    else :
        print 'else entered...'
        kSize -=1
        return getBinary(binaryInput, kSize, beginBit)
        # ^^^^

Answer 2

When a function ends without executing a return statement, it returns None. Instead of

getBinary(binaryInput, kSize, beginBit)

you mean

return getBinary(binaryInput, kSize, beginBit)