如何截掉空格（包括tab)-木庄网络博客

本文摘自php中文网，作者anonymity，侵删。

本文实例讲述了python去除文件中空格、Tab及回车的方法。具体如下：

服务端的json文件都是人工写的，写完之后发现格式都是十分规整，易于人阅读的json，但是客户端请求不需要那些为了格式而在json里面添加的空格、tab、回车等等没用的字符，遂用python写一脚本，去除文件中的空格、回车、换行。

原json文件：

{
  "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"
      }
        ]
}

用脚本处理后的文件：

{"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"}]}

下面上代码：

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