FIND方法在pymongo和VERSION中不存在？

Question

我想用我的pymongo做臨時數據庫來做一些簡單的事情。所以第一件事照例

import pymongo 
connection = pymongo.Connection(host = 'mongodb://username:password@alaki-staging.member0.mongolayer.com:37017,/dbname?safe=true&slaveOk=true&fsync=true&journal=true&ssl=true') 

現在只

connection.find({}) 
> Traceback (most recent call last): 
    File "D:\MypythonCode\test.py", line 7, in <module> 
    connection.find({}) 
    File "C:\Python27\lib\site-packages\pymongo\database.py", line 769, in __call_ 
_ 
    self.__name, self.__connection.__class__.__name__)) 
TypeError: 'Database' object is not callable. If you meant to call the 'find' me 
thod on a 'Connection' object it is failing because no such method exists. 

C:\Python27>python.exe D:\MypythonCode\test.py > test.d 
Traceback (most recent call last): 
    File "D:\MypythonCode\test.py", line 7, in <module> 
    connection.find({}) 
    File "C:\Python27\lib\site-packages\pymongo\database.py", line 769, in __call_ 
_ 
    self.__name, self.__connection.__class__.__name__)) 
TypeError: 'Database' object is not callable. If you meant to call the 'find' me 
thod on a 'Connection' object it is failing because no such method exists. 

甚至檢查版本！？

connection.version() 

Traceback (most recent call last): 
    File "test.py", line 7, in <module> 
    connection.version() 
    File "C:\Python27\lib\site-packages\pymongo\database.py", line 769, in __call_ 
_ 
    self.__name, self.__connection.__class__.__name__)) 
TypeError: 'Database' object is not callable. If you meant to call the 'version' 
method on a 'Connection' object it is failing because no such method exists. 
Press any key to continue . . . 

有什麼建議嗎？

Answer 1

爲什麼要

connection.find({}) 

工作？

您正在猜測API方法而沒有閱讀關於MongoDB和PyMongo的基礎知識。

find（）顯然是一個集合的方法，而不是連接的方法。

row = connection.your_collection.find() 

是你什麼。

請在修改之前閱讀文檔並猜測如何使用API​​。

PyMongo文檔中充滿了示例。