Python 为什么在django和mongodb中ModelName.objects.using（'db'）.filter（…）会返回不可编辑的错误？

为什么： v=Word.objects.using'mongodata'。filterword=Word，title=title[0]

返回错误类型错误“精确”对象不可编辑

完全回溯：

 Traceback (most recent call last):
  File "/home/AddToModels.py", line 96, in addWord
    v = Word.objects.using('mongodata').filter(word = word, title=tit)[0]#.filter(__raw__={"title":tit})#.filter(word = word)
  File "/home/local/lib/python2.7/site-packages/django/db/models/query.py", line 177, in __getitem__
    return list(qs)[0]
  File "/home/local/lib/python2.7/site-packages/django/db/models/query.py", line 141, in __iter__
    self._fetch_all()
  File "/home/local/lib/python2.7/site-packages/django/db/models/query.py", line 966, in _fetch_all
    self._result_cache = list(self.iterator())
  File "/home/local/lib/python2.7/site-packages/django/db/models/query.py", line 265, in iterator
    for row in compiler.results_iter():
  File "/home/local/lib/python2.7/site-packages/djangotoolbox/db/basecompiler.py", line 375, in results_iter
    results = self.build_query(fields).fetch(
  File "/home/local/lib/python2.7/site-packages/djangotoolbox/db/basecompiler.py", line 481, in build_query
    query.add_filters(self.query.where)
  File "/home/local/lib/python2.7/site-packages/django_mongodb_engine/compiler.py", line 184, in add_filters
    field, lookup_type, value = self._decode_child(child)
  File "/home/local/lib/python2.7/site-packages/djangotoolbox/db/basecompiler.py", line 194, in _decode_child
    constraint, lookup_type, annotation, value = child
TypeError: 'Exact' object is not iterable

get也有同样的问题

type(v) = <class 'django_mongodb_engine.contrib.MongoDBQuerySet'>

如果我用的话效果很好，好吗

设置：

MongoDb 2.4.6 Django 1.7 路由器，用于身份验证和用户的关系数据库，用于数据的非关系数据库

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您正在使用的库似乎还不支持Django 1.7。

您确定错误来自您发布的行吗？请分享完整回溯。感谢@AamirAdnan添加完整回溯的回复