dump json into yaml | 易学教程

问题

I got a .json file (named it meta.json) like this:

{
    "main": {
        "title": "今日は雨が降って",
        "description": "今日は雨が降って"
    }
}

I would like to convert it to a .yaml file (named it meta.yaml) like :

title: "今日は雨が降って"
description: "今日は雨が降って"

What I have done was :

import simplejson as json
import pyyaml

f = open('meta.json', 'r')
jsonData = json.load(f)
f.close()

ff = open('meta.yaml', 'w+')
yamlData = {'title':'', 'description':''}
yamlData['title'] = jsonData['main']['title']
yamlData['description'] = jsonData['main']['description']
yaml.dump(yamlData, ff)
# So you can  see that what I need is the value of meta.json

But sadly, what I got is following:

{description: "\u4ECA\u65E5\u306F\u96E8\u304C\u964D\u3063\u3066", title: "\u4ECA\u65E5\
\u306F\u96E8\u304C\u964D\u3063"}

Why?

回答1:

pyyaml.dump() has "allow_unicode" option, it's default is None, all non-ASCII characters in the output are escaped. If allow_unicode=True write raw unicode strings.

yaml.dump(data, ff, allow_unicode=True)

bonus

json.dump(data, outfile, ensure_ascii=False)

回答2:

This works for me:

#!/usr/bin/env python
import sys
import json
import yaml

print yaml.dump(yaml.load(json.dumps(json.loads(open(sys.argv[1]).read()))), default_flow_style=False)

So what we are doing is:

load json file through json.loads
json loads in unicode format - convert that to string by json.dump
load the yaml through yaml.load
dump the same in a file through yaml.dump - default_flow_style - True displays data inline, False doesn't do inline - so you have dumpable data ready.

Takes care of unicode as per How to get string objects instead of Unicode ones from JSON in Python?

回答3:

This is correct. The "\u...." strings are unicode representation of your Japanese? string. When you decode and use it with proper encoding, it should display fine wherever you use it. eg a webpage.

See the equality of data inspite of different representation as string :

>>> import json
>>> j = '{    "main": {        "title": "今日は雨が降って",        "description": "今日は雨が降って"    }}'
>>> s = json.loads(j)
>>> t = json.dumps(s)
>>> j
'{    "main": {        "title": "\xe4\xbb\x8a\xe6\x97\xa5\xe3\x81\xaf\xe9\x9b\xa8\xe3\x81\x8c\xe9\x99\x8d\xe3\x81\xa3\xe3\x81\xa6",        "description": "\xe4\xbb\x8a\xe6\x97\xa5\xe3\x81\xaf\xe9\x9b\xa8\xe3\x81\x8c\xe9\x99\x8d\xe3\x81\xa3\xe3\x81\xa6"    }}'
>>> t
'{"main": {"description": "\\u4eca\\u65e5\\u306f\\u96e8\\u304c\\u964d\\u3063\\u3066", "title": "\\u4eca\\u65e5\\u306f\\u96e8\\u304c\\u964d\\u3063\\u3066"}}'
>>> s == json.loads(t)
True

回答4:

In [1]: import json, yaml

In [2]: with open('test.json') as js:
   ...:     data = json.load(js)[u'main']
   ...:     

In [3]: with open('test.yaml', 'w') as yml:
   ...:     yaml.dump(data, yml, allow_unicode=True)
   ...:     

In [4]: ! cat test.yaml
{!!python/unicode 'description': 今日は雨が降って, !!python/unicode 'title': 今日は雨が降って}

In [5]: with open('test.yaml', 'w') as yml:
   ...:     yaml.safe_dump(data, yml, allow_unicode=True)
   ...:     

In [6]: ! cat test.yaml
{description: 今日は雨が降って, title: 今日は雨が降って}

来源：https://stackoverflow.com/questions/15941996/dump-json-into-yaml

标签

python

json

encoding

YAML