python中打印显示unicode字符串的时候,有没有办法显示正常能看懂的字符 - V2EX
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timchou
V2EX    Python

python中打印显示unicode字符串的时候,有没有办法显示正常能看懂的字符

  •  
  •   timchou 2012-11-05 12:06:35 +08:00 6383 次点击
    这是一个创建于 4798 天前的主题,其中的信息可能已经有所发展或是发生改变。
    我是在Flask中写api的时候,返回json数据的时候,其中的字符串显示都是如下:

    {
    "state": 1,
    "error": "email\u4e0d\u80fd\u4e3a\u7a7a"
    }

    有没有什么办法能够直接显示正常能读的字符串呢
    4 条回复    1970-01-01 08:00:00 +08:00
    reorx
        1
    reorx  
       2012-11-05 13:40:16 +08:00
    这是个坑爹的问题,在使用 dump 或 dumps 函数的时候一定要传上 ensure_ascii=False 的参数。解释见文档:

    If ensure_ascii is True (the default), all non-ASCII characters in the output are escaped with \uXXXX sequences, and the result is a str instance consisting of ASCII characters only. If ensure_ascii is False, some chunks written to fp may be unicode instances. This usually happens because the input contains unicode strings or the encoding parameter is used. Unless fp.write() explicitly understands unicode (as in codecs.getwriter()) this is likely to cause an error.

    http://docs.python.org/2/library/json.html#json.dump
    zhy0216
        2
    zhy0216  
       2012-11-05 13:47:06 +08:00
    用Google插件Advanced Rest Client做测试, 会显示中文
    timchou
        3
    timchou  
    OP
       2012-11-05 14:44:02 +08:00
    @zhy0216 感谢,不过这个插件不支持最新版本的chrome。

    @reorx 恩,这个方法可行,不过我用的是Flask框架,其内部有一个jsonify()的方法,你只要自己写诸如return jsonify(a=1,b='ppp'),flask会直接返回给浏览器一封装了的json数据。我看了下flask源代码里面jsonify()的实现,内部直接用了默认的ensure_ascii=True,所以我们只能手动更改下flask的源代码,在helpers.py中大概197行加下这个ensure_ascii=False就可以了。

    多谢各位。
    zhy0216
        4
    zhy0216  
       2012-11-05 23:31:23 +08:00
    @timchou 原来有内置的jsonify啊... 我还自己搞了一个
    def jsonify(f):
    import jsonpickle
    @wraps(f)
    def inner(*args, **kwds):
    return Response(jsonpickle.encode(f(*args, **kwds),unpicklable=False),
    mimetype='application/json')
    return inner
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