如何截掉空格（包括tab)

{
  "amount" : "2",
  "content" : [
      {  "category_id" : 0,
        "name" : "古典文学",
        "category_json_url" : "http://172.16.242.14:8080/source/history/history.json"
      },
      {
        "category_id" : 1,
        "name" : "流行音乐",
        "category_json_url" : "http://172.16.242.14:8080/source//popmusic/popmusic.json"
      }
        ]
}

def stripFile(oldFName,newFName):
  '''''remove the space or Tab or enter in a file,and output to a new file in the same folder'''
  fp = open(oldFName,"r+")
  newFp = open(newFName,"w")
  for eachline in fp.readlines():
    newStr = eachline.replace(" ","").replace("\t","").strip()
    #print "Write:",newStr
    newFp.write(newStr)
  fp.close()
  newFp.close()
if __name__ == "__main__":
  oldName = raw_input("input file name:")
  nameList = oldName.split(".")
  newName = "%s%s%s" % (nameList[0],"_new.",nameList[1])
  stripFile(oldName,newName)
  print "finish output to new file:",newName