Question

抱歉，试图理解并习惯字典和列表对象。

我通过他们的ebaysdk调用eBay的API，并希望将其中的项目存储为Mongo中的文档。简单。

以下是将返回的架构示例：

<timestamp>2009-09-04T00:47:12.456Z</timestamp>
  <searchResult count="2">
  <item>
     <itemId>230371938681</itemId>
     <title>Harry Potter and the Order of the Phoenix HD-DVD</title>
     <globalId>EBAY-US</globalId>
     <primaryCategory>
        <categoryId>617</categoryId>
        <categoryName>DVD, HD DVD & Blu-ray</categoryName>
     </primaryCategory>

我已经尝试过500次这段代码的迭代，这里是我最基本的内容。

from ebaysdk import finding
from pymongo import MongoClient

api = finding(appid="billy-40d0a7e49d87")
api.execute('findItemsByKeywords', {'keywords': 'potter'})
listings = api.response_dict()

client = MongoClient('mongodb://user:pass@billy.mongohq.com:10099/ebaystuff')
db = client['ebaycollection']
ebay_collection = db.ebaysearch

for key in listings:
  print key
  ebay_collection.insert(key)

会收到此错误：

Traceback (most recent call last):
  File "ebay_search.py", line 34, in <module>
    ebay_collection.insert(key)
  File "/Library/Python/2.7/site-packages/pymongo/collection.py", line 408, in insert
    self.uuid_subtype, client)
  File "/Library/Python/2.7/site-packages/pymongo/collection.py", line 378, in gen
    doc['_id'] = ObjectId()
TypeError: 'str' object does not support item assignment

简单的东西。我想要做的就是将每个项目添加为文档。

Answer 1

像字符串这样的不可变类型不能用作文档，因为它不允许添加其他字段，例如_id field Mongo requires。您可以将字符串包装在字典中以用作包装文档：

key_doc = {'key': key}
ebay_collection.insert(key_doc)

Python / Dictionary / List / Mongo插入问题 - 初学者

1 个答案: