Python-to-mongodb interaction---Lookup

When Python interacts with the MONGO database, there are some minor issues to note when looking:

Code:

1  fromPymongoImport*2 defFind_func ():3     #Create a Connection object4Client = Mongoclient (port=27017,host='localhost')5     #Select the database to use6db =client.test7     #perform a query operation8res = Db.students.find_one ({'name':'John Doe'})9     #The returned res is a collectionTen      One     Print(RES) A     #The results are as follows:

Use Find_one to return a document (collection)

When you use Find, an object is returned:

Change the code for line eighth:

# The eighth line is replaced by:res = db.students.find ({'name':' John Doe '})  Print(res)# See what executable methods of res print(dir (res))

You can see that res is an object

(⊙o⊙) ..., dir (res) A lot more, we should be concerned that there is a __iter__ method, which shows that res is an iterative object. means that you can use the for in to traverse.

 for inch Res:     Print (i)

Python-to-mongodb interaction---Lookup