Python实现把json格式转换成文本或sql文件

python如何将json格式的数据快速的转化成指定格式的数据呢？或者转换成sql文件？

下面的例子是将json格式的数据准换成以#_#分割的文本数据，也可用于生成sql文件。

    [root@bogon tutorial]# vi json2txt.py 
    #-*- coding: UTF-8 -*-
    import json

    data = []
    with open('./tencent_test.json') as f:
      for line in f:
        data.append(json.loads(line))

    #print json.dumps(data, ensure_ascii=False)


    import codecs
    file_object = codecs.open('tencent.txt', 'w' ,"utf-8")
    str = "\r\n"
    splitstr = "#_#"
    for item in data:
      #print json.dumps(item)
      #str = str + "insert into tencent(name,catalog,workLocation,recruitNumber,detailLink,publishTime) values "
      #str = str + "'%s','%s','%s','%s','%s'\r\n" % (item['parentTitle'],item['parentLink'],item['author'],item['link'],item['title'])
      #print json.loads(item['author']) + "\r\n"
      str = "%s#_#%s#_#%s#_#%s#_#%s\r\n" % (item['parentTitle'],item['parentLink'],item['author'],item['link'],item['title'].strip())
      file_object.write(str)

    #import codecs
    #file_object = codecs.open('tencent.txt', 'w' ,"utf-8")
    #file_object.write(str)
    file_object.close()
    print "success"

注：如果数据量过大不宜全部放在str里一次性写入文件。可以考虑逐行写入，或者到达一定程度时批量写入。

另外：python通过strip(rm)替换字符串，当rm为空时，默认删除空白符（包括'\n', '\r', '\t', ' ')。

测试：

json格式的数据

    [root@bogon tutorial]# vi tencent_test.json 

    {"author": "作者", "parentTitle": "父标题", "title": "标题", "pageUrl": "pageurl", "link": "linkurl", "parentLink": "parenturl"}
    {"author": "作者", "parentTitle": "父标题", "title": "标题", "pageUrl": "pageurl", "link": "linkurl", "parentLink": "parenturl"}
    {"author": "作者", "parentTitle": "父标题", "title": "标题", "pageUrl": "pageurl", "link": "linkurl", "parentLink": "parenturl"}
    {"author": "作者", "parentTitle": "父标题", "title": "标题", "pageUrl": "pageurl", "link": "linkurl", "parentLink": "parenturl"}
    {"author": "作者", "parentTitle": "父标题", "title": "标题", "pageUrl": "pageurl", "link": "linkurl", "parentLink": "parenturl"}
    {"author": "作者", "parentTitle": "父标题", "title": "标题", "pageUrl": "pageurl", "link": "linkurl", "parentLink": "parenturl"}
    {"author": "作者", "parentTitle": "父标题", "title": "标题", "pageUrl": "pageurl", "link": "linkurl", "parentLink": "parenturl"}
    {"author": "作者", "parentTitle": "父标题", "title": "标题", "pageUrl": "pageurl", "link": "linkurl", "parentLink": "parenturl"}
    {"author": "作者", "parentTitle": "父标题", "title": "标题", "pageUrl": "pageurl", "link": "linkurl", "parentLink": "parenturl"}
    {"author": "作者", "parentTitle": "父标题", "title": "标题", "pageUrl": "pageurl", "link": "linkurl", "parentLink": "parenturl"}
    {"author": "作者", "parentTitle": "父标题", "title": "标题", "pageUrl": "pageurl", "link": "linkurl", "parentLink": "parenturl"}

运行python json2txt.py

    [root@bogon tutorial]# python json2txt.py 
    success
    [root@bogon tutorial]# more tencent.txt 
    父标题#_#parenturl#_#作者#_#linkurl#_#标题
    父标题#_#parenturl#_#作者#_#linkurl#_#标题
    父标题#_#parenturl#_#作者#_#linkurl#_#标题
    父标题#_#parenturl#_#作者#_#linkurl#_#标题
    父标题#_#parenturl#_#作者#_#linkurl#_#标题
    父标题#_#parenturl#_#作者#_#linkurl#_#标题
    父标题#_#parenturl#_#作者#_#linkurl#_#标题
    父标题#_#parenturl#_#作者#_#linkurl#_#标题
    父标题#_#parenturl#_#作者#_#linkurl#_#标题
    父标题#_#parenturl#_#作者#_#linkurl#_#标题
    父标题#_#parenturl#_#作者#_#linkurl#_#标题