Python code for an Ip range

def ipAddrRange(startAddr, endAddr):
   def incrAddr(addrList):
       addrList[3] += 1
       for i in (3,2,1):
           if addrList[i] == 256:
               addrList[i] = 0
               addrList[i-1] += 1

   def asString(addrList):
       return ".".join(map(str,addrList))

   startAddrList = map(int,startAddr.split("."))
   endAddrList = map(int,endAddr.split("."))

   curAddrList = startAddrList[:]
   yield asString(curAddrList)
   for i in range(4):
       while curAddrList[i] < endAddrList[i]:
           incrAddr(curAddrList)
           yield asString(curAddrList)

for addr in ipAddrRange("10.255.255.250","11.0.0.20"):
   print addr