Python json, ненужные косые черты

Question

Я создаю простое приложение на стороне сервера, я использую встроенный модуль «json» для создания ответа на клиент.

if isinstance(obj, (list, tuple)): 
    return json.dumps({key: [o.to_json() for o in obj if 
          isinstance(o, JsonAble)]}, ensure_ascii=False) 

где мой класс, который в списке

class ArtistSearchResult(JsonAble): 

    def to_json(self): 
     return json.dumps({'name': self.name, 'descr': self.descr, 
          "url": self.url, 'genres': self.genres}, 
          allow_nan=False, ensure_ascii=False) 

Он работает, но в ответ у меня есть лишние слеши:

{"responce": ["{\"url\": \"/music/Lindsey+Buckingham\", \"genres\": [\"singer-songwriter\"], \"name\": \"Lindsey Buckingham\", \"descr\": \"Lindsey Adams Buckingham (born October 3, 1949) is an American guitarist, singer, composer and producer, most notable for being the...…read more\"}", "{\"url\": \"/music/Lindsey+Stirling\", \"genres\": [\"violin\"], \"name\": \"Lindsey Stirling\", \"descr\": \"Lindsey Stirling (b. 21 September 1986 in Orange County, California) is a violinist, dancer and composer based in Utah.…read more\"}", "{\"url\": \"/music/Graham+Lindsey\", \"genres\": [\"alt-country\"], \"name\": \"Graham Lindsey\", \"descr\": \"Graham Lindsey is a performing songwriter, an americana singer of subtle, stark ballads and waltzes of love and murder. A member of the...…read more\"}", "{\"url\": \"/music/Lindsey+Haun\", \"genres\": [\"country\"], \"name\": \"Lindsey Haun\", \"descr\": \"Lindsey Haun (born November 21, 1984 in Los Angeles, California) is an American actress and country music singer. Haun started acting...…read more\"}", "{\"url\": \"/music/Ryan+Lindsey\", \"genres\": [\"oklahoma\"], \"name\": \"Ryan Lindsey\", \"descr\": \"Ryan Lindsey is a singer-songwriter based in Norman, Oklahoma. He started as an entertainer early on making movies with his brothers and...…read more\"}", "{\"url\": \"/music/+noredirect/Tyler+Ward+&+Lindsey+Stirling\", \"genres\": [\"pop\"], \"name\": \"Tyler Ward & Lindsey Stirling\", \"descr\": \"We don’t have a description for this artist yet\"}", "{\"url\": \"/music/Megan+Nicole+&+Lindsey+Stirling\", \"genres\": [\"pop\"], \"name\": \"Megan Nicole & Lindsey Stirling\", \"descr\": \"We don’t have a description for this artist yet\"}", "{\"url\": \"/music/Lindsey+Pavao\", \"genres\": [\"the voice\"], \"name\": \"Lindsey Pavao\", \"descr\": \"Lindsey Pavao is an American singer from Sacramento, California. She was one of the contestants of NBC singing reality show, The Voice...…read more\"}", "{\"url\": \"/music/Steve+Forte+Rio+Feat.+Lindsey+Ray\", \"genres\": [\"house\"], \"name\": \"Steve Forte Rio Feat. Lindsey Ray\", \"descr\": \"We don’t have a description for this artist yet\"}", "{\"url\": \"/music/Peter+Hollens+&+Lindsey+Stirling\", \"genres\": [\"ost\"], \"name\": \"Peter Hollens & Lindsey Stirling\", \"descr\": \"We don’t have a description for this artist yet\"}", "{\"url\": \"/music/Steve+Forte+Rio%2FLindsey+Ray\", \"genres\": [], \"name\": \"Steve Forte Rio/Lindsey Ray\", \"descr\": \"We don’t have a description for this artist yet\"}", "{\"url\": \"/music/Kurt+Schneider+&+Aim%C3%A9e+Proal+&+Lindsey+Stirling\", \"genres\": [\"female vocalist\"], \"name\": \"Kurt Schneider & Aimée Proal & Lindsey…\", \"descr\": \"We don’t have a description for this artist yet\"}", "{\"url\": \"/music/Eppic+feat.+Lindsey+Stirling\", \"genres\": [\"instrumental\"], \"name\": \"Eppic feat. Lindsey Stirling\", \"descr\": \"We don’t have a description for this artist yet\"}", "{\"url\": \"/music/Lindsey+Stirling+and+Shaun+Barrowes\", \"genres\": [\"instrumental\"], \"name\": \"Lindsey Stirling and Shaun Barrowes\", \"descr\": \"We don’t have a description for this artist yet\"}", "{\"url\": \"/music/Lindsey+Lin%27s\", \"genres\": [\"zouk\"], \"name\": \"Lindsey Lin's\", \"descr\": \"We don’t have a description for this artist yet\"}", "{\"url\": \"/music/Lindsey+Ray\", \"genres\": [\"pop\"], \"name\": \"Lindsey Ray\", \"descr\": \"At the tender age of five, Lindsey Ray declared to her family, \\\"When I grow up, I'm going to be a singer.\\\" The passion was in...…read more\"}", "{\"url\": \"/music/Tyler+Ward,+Chester+See+&+Lindsey+Stirling\", \"genres\": [\"pop\"], \"name\": \"Tyler Ward, Chester See & Lindsey…\", \"descr\": \"We don’t have a description for this artist yet\"}", "{\"url\": \"/music/Patrick+Lindsey\", \"genres\": [\"techno\"], \"name\": \"Patrick Lindsey\", \"descr\": \"Born in Bad Nauheim near Frankfurt, Patrick Lindsey was one of the founders of the much respected label Kanzleramt in 1993. Later Patrick...…read more\"}", "{\"url\": \"/music/Steve+Forte+Rio;Lindsey+Ray\", \"genres\": [], \"name\": \"Steve Forte Rio;Lindsey Ray\", \"descr\": \"We don’t have a description for this artist yet\"}", "{\"url\": \"/music/Lindsey+Woolsey\", \"genres\": [\"pop songs\"], \"name\": \"Lindsey Woolsey\", \"descr\": \"Lindsey Woolsey are Elle Osborne and Melanie Wilson. They met in a hotel lobby in East London in 2004 and have been collaborating with...…read more\"}"]} 

Почему они возникают в моем ответе?

Answer 1

Ваш метод to_json() возвращает строку, содержащую JSON. json.dumps() затем переходит к кавычкам, которые являются особым символом в JSON.

to_json() Ваш должен вернуть dict, который затем может быть кодируемый json.dumps()

class ArtistSearchResult(JsonAble): 

    def to_json_dict(self): 
     return {'name': self.name, 'descr': self.descr, 
       'url': self.url, 'genres': self.genres} 

Лучше, но более сложный способ, вероятно, будет написать собственный JSONEncoder подкласс.

Answer 2

Самый простой способ заключается в следующем:

//convert list to string and then load it as json 

jsonString = json.dumps(list) 

jsonlist = json.loads(jsonString) 

это Визитки работа для меня.