I tried to use projection queries:
class Article(db.Model):
title = db.StringProperty(required=True)
# others...
print db.Query('Article', projection=('title')).get()
> Traceback (most recent call last):
> File
> "/base/python_runtime/python_lib/versions/1/google/appengine/ext/admin/__init__.py",
> line 331, in post
> exec(compiled_code, globals())
> File "<string>", line 3, in <module>
> File
> "/base/python_runtime/python_lib/versions/1/google/appengine/ext/db/__init__.py",
> line 2098, in get
> results = self.run(limit=1, **kwargs)
> File
> "/base/python_runtime/python_lib/versions/1/google/appengine/ext/db/__init__.py",
> line 2061, in run
> raw_query = self._get_query()
> File
> "/base/python_runtime/python_lib/versions/1/google/appengine/ext/db/__init__.py",
> line 2446, in _get_query
> kind = self._model_class.kind()
> AttributeError: 'str' object has no attribute 'kind'
print db.GqlQuery("SELECT title FROM Article").get().title
# this one works
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