<p>我已经在MongoDB数据库中存储了一个pdf文件,我正在访问它,如下所示:</p>
<pre><code>dbPDFReports = client['pdfReports']
</code></pre>
<p>其中client是mymongoclient,如下所示:</p>
^{pr2}$
<p>但我得到了一个错误:</p>
<pre><code>AttributeError: 'WriteConcern' object has no attribute 'acknowledged'
</code></pre>
<p>知道为什么吗?在</p>
<p><strong>编辑</strong></p>
<p>升级pymongo后,我得到了以下回溯:</p>
<pre><code>Traceback (most recent call last):
File "main.py", line 2, in <module>
from bulk import *
File "/home/inno/InnovAccer/Projects/tiger-global-backend/API/bulk.py", line 1, in <module>
from pymongo import MongoClient
File "/home/inno/InnovAccer/Projects/tiger-global-backend/API/pymongo/__init__.py", line 83, in <module>
from pymongo.collection import ReturnDocument
File "/home/inno/InnovAccer/Projects/tiger-global-backend/API/pymongo/collection.py", line 22, in <module>
from bson.py3compat import (_unicode,
ImportError: cannot import name _unicode
</code></pre>