Json.dump失败，“必须是unicode，而不是str”TypeError [英] Json.dump failing with 'must be unicode, not str' TypeError

问题描述

我有一个json文件，恰好有很多中文和日语（和其他语言）的字符。我使用 io.open 将其加载到我的python 2.7脚本中，如下所示：

  with io.open（'multiIdName.json'，encoding =utf-8）as json_data：
 cards = json.load（json_data）
  / pre> 
 
 
我添加一个新的属性到json，都很好。然后我尝试将其写回另一个文件：
  with io.open（testJson.json，'w' ，encoding =utf-8）作为outfile：
 json.dump（cards，outfile，ensure_ascii = False）
  
这是当我收到错误 TypeError：必须是unicode，而不是str  
 
 
 
我尝试将outfile作为二进制文件（与io.open（testJson.json，wb）作为outfile：），但我最终得到的东西： / p> 
 
 
  {multiverseid：262906，name：\\\æ\\\¸\\\¸\\\é\\\š \\\¼\\\ç\\\‹\\\¹\\\é\\\¹\\\«，language：简体中文} 
  
我认为以相同的编码开放和写入就足够了，还有ensure_ascii标志，但显然不是。我只想在运行我的脚本之前保留文件中存在的字符，而不转换成\u的。
解决方案
你可以尝试以下吗？
  with io.open（testJson.json，'w'，encoding =utf -8）作为outfile：
 outfile.write（unicode（json.dumps（cards，ensure_ascii = False）））
  
 
I have a json file which happens to have a multitude of Chinese and Japanese (and other language) characters. I'm loading it into my python 2.7 script using io.open as follows:
with io.open('multiIdName.json', encoding="utf-8") as json_data:
    cards = json.load(json_data)
I add a new property to the json, all good. Then I attempt to write it back out to another file:
with io.open("testJson.json",'w',encoding="utf-8") as outfile:
        json.dump(cards, outfile, ensure_ascii=False)
That's when I get the error TypeError: must be unicode, not str

I tried writing the outfile as a binary (with io.open("testJson.json",'wb') as outfile:), but I end up with stuff this:
{"multiverseid": 262906, "name": "\u00e6\u00b8\u00b8\u00e9\u009a\u00bc\u00e7\u008b\u00ae\u00e9\u00b9\u00ab", "language": "Chinese Simplified"}
I thought opening and writing it in the same encoding would be enough, as well as the ensure_ascii flag, but clearly not. I just want to preserve the characters that existed in the file before I run my script, without them turning into \u's.
解决方案
Can you try the following?
with io.open("testJson.json",'w',encoding="utf-8") as outfile:
  outfile.write(unicode(json.dumps(cards, ensure_ascii=False)))


                        
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