IndexError: no such item for Cursor instance

IndexError: no such item for Cursor instance 字面意思是这个cursor是空的,但是这个明显不是空的,网上看了看stockoverflow中一个人的自问自答,说自己多线程...

...sometimes getting "IndexError: no such item for Cursor" - ...

pymongo 2.0.1-1, cursor_8py_source.html

Source Code for Module pymongo.cursor

python - mongodb pymongo empty when counter > 1 - Stack ...

pymongo: cursor.py Source File

mongodb - python + mongo issue - Stack Overflow

IndexError: no such item for Cursor in...的中文翻译_百度翻译