python將json格式的數據轉換成文本格式的數據或sql文件

python如何將json格式的數據快速的轉化成指定格式的數據呢？或者轉換成sql文件？

下面的例子是將json格式的數據准換成以#_#分割的文本數據，也可用於生成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：如果數據量過大不宜全部放在str里一次性寫入文件。可以考慮逐行寫入，或者到達一定程度時批量寫入。

另外：python通過strip(rm)替換字符串，當rm為空時，默認刪除空白符（包括'\n', '\r',  '\t',  ' ')。

測試：

json格式的數據

[root@bogon tutorial]# vi tencent_test.json 

{"author": "作者", "parentTitle": "父標題", "title": "標題", "pageUrl": "pageurl", "link": "linkurl", "parentLink": "parenturl"}
{"author": "作者", "parentTitle": "父標題", "title": "標題", "pageUrl": "pageurl", "link": "linkurl", "parentLink": "parenturl"}
{"author": "作者", "parentTitle": "父標題", "title": "標題", "pageUrl": "pageurl", "link": "linkurl", "parentLink": "parenturl"}
{"author": "作者", "parentTitle": "父標題", "title": "標題", "pageUrl": "pageurl", "link": "linkurl", "parentLink": "parenturl"}
{"author": "作者", "parentTitle": "父標題", "title": "標題", "pageUrl": "pageurl", "link": "linkurl", "parentLink": "parenturl"}
{"author": "作者", "parentTitle": "父標題", "title": "標題", "pageUrl": "pageurl", "link": "linkurl", "parentLink": "parenturl"}
{"author": "作者", "parentTitle": "父標題", "title": "標題", "pageUrl": "pageurl", "link": "linkurl", "parentLink": "parenturl"}
{"author": "作者", "parentTitle": "父標題", "title": "標題", "pageUrl": "pageurl", "link": "linkurl", "parentLink": "parenturl"}
{"author": "作者", "parentTitle": "父標題", "title": "標題", "pageUrl": "pageurl", "link": "linkurl", "parentLink": "parenturl"}
{"author": "作者", "parentTitle": "父標題", "title": "標題", "pageUrl": "pageurl", "link": "linkurl", "parentLink": "parenturl"}
{"author": "作者", "parentTitle": "父標題", "title": "標題", "pageUrl": "pageurl", "link": "linkurl", "parentLink": "parenturl"}

運行python json2txt.py

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