问题描述
我正在使用Python工具检索Twitter数据,并将这些数据以JSON格式转储到我的磁盘上.我注意到一条推文用双引号引起了整个数据字符串的意外转义.此外,实际JSON格式的所有双引号都以反斜杠转义.
I am retrieving Twitter data with a Python tool and dump these in JSON format to my disk. I noticed an unintended escaping of the entire data-string for a tweet being enclosed in double quotes. Furthermore, all double quotes of the actual JSON formatting are escaped with a backslash.
它们看起来像这样:
如何避免这种情况?应该是:
How do I avoid that? It should be:
我的文件输出代码如下:
My file-out code looks like this:
with io.open('data'+self.timestamp+'.txt', 'a', encoding='utf-8') as f:
f.write(unicode(json.dumps(data, ensure_ascii=False)))
f.write(unicode('\n'))
意外的转义会在以后的处理步骤中读取JSON文件时引起问题.
The unintended escaping causes problems when reading in the JSON file in a later processing step.
推荐答案
您正在对JSON字符串进行双重编码. data
已经已经是JSON字符串,并且不需要再次 进行编码:
You are double encoding your JSON strings. data
is already a JSON string, and doesn't need to be encoded again:
>>> import json
>>> not_encoded = {"created_at":"Fri Aug 08 11:04:40 +0000 2014"}
>>> encoded_data = json.dumps(not_encoded)
>>> print encoded_data
{"created_at": "Fri Aug 08 11:04:40 +0000 2014"}
>>> double_encode = json.dumps(encoded_data)
>>> print double_encode
"{\"created_at\": \"Fri Aug 08 11:04:40 +0000 2014\"}"
只需将这些直接写到您的文件中即可
Just write these directly to your file:
with open('data{}.txt'.format(self.timestamp), 'a') as f:
f.write(data + '\n')
这篇关于转储至JSON会添加其他双引号和引号转义的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!