使用**kwargs/a字符串填充django taggit字段

我有一个自定义命令，用JSON数据填充Django对象，该数据的工作方式基本上符合我的要求，但Django taggit字段有一个问题。解析我的所有数据并以JSON输出后，我的JSON对象中的类型如下所示：

"genres": "latin pop, pop, singer-songwriter", 

django taggit采用逗号分隔的标记列表，就是这样。但是当我运行下面的自定义命令时，模型中的

genres=TaggableManager（）

字段中没有任何内容

import json
import dateparser
from django.db import IntegrityError
from django.core.management.base import BaseCommand, CommandError
from concerts.models import Concert, Venue


class Command(BaseCommand):
    help = "Load JSON concert data"

    def add_arguments(self, parser):
        parser.add_argument('concert_file', type=str)

    def handle(self, *args, **options):
        with open(options['concert_file']) as f:
            data = json.load(f)
        for concert in data:
            try:
                venue = Venue.objects.get(name=concert['venue'])
            except Venue.DoesNotExist:
                print "Can't find venue! " + concert['venue']
                pass
            del concert['venue']
            try:
                Concert.objects.create(venue=venue, **concert)
            except IntegrityError:
                print concert['slug'] + ": This concert already exists!"
                pass
                # if the slug unique contrainst fails, just pass this concert

---

如何让“类型”字段以我想要的方式填充？

以下是我在其他人遇到此问题时得出的结论：

class Command(BaseCommand):
help = "Load JSON concert data"

def add_arguments(self, parser):
    parser.add_argument('concert_file', type=str)

def handle(self, *args, **options):
    with open(options['concert_file']) as f:
        data = json.load(f)
    for concert in data:
        try:
            venue = Venue.objects.get(name=concert['venue'])
        except Venue.DoesNotExist:
            print "Can't find venue! " + concert['venue']
            pass
        del concert['venue']
        try:
            Concert.objects.create(venue=venue, **concert)
            print concert['slug'] + ": Concert created!"
        except IntegrityError: # if slug already exists
            print concert['slug'] + ": This slug already exists!"
            pass
            # if the slug unique contrainst fails, just pass this concert
        try:
            new_concert = Concert.objects.get(slug=concert['slug'])
            genres = concert['genres'].split(", ")
            for genre in genres:
                new_concert.genres.add(genre)
        except KeyError or AttributeError: # if no genres key exists
            pass

正如你所料，答案就在文件中。我查看了django taggit文档，特别是API上的文档，然后在上面的try/except语句中添加了标准标记

（对我来说）这段代码的一个好处是，即使音乐会已经存在，这段代码仍然会更新“流派”字段