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How to update data in a Collection using Python?

  • Last Updated : 17 May, 2020

MongoDB is a cross-platform, document-oriented database that works on the concept of collections and documents. MongoDB offers high speed, high availability, and high scalability.

Updating Data in MongoDB

We can update data in a collection using update_one() method and update_many() method. 

update_one() 

Update_one() method updated first occurrence if query is found. 

Syntax :update_one(query, newvalues)




Parameters:
Query: It is the query object. 
newvalues: It is the new values of the document. 

Example:

Sample Database:

Python3




import pymongo
  
  
client = pymongo.MongoClient("mongodb://localhost:27017/")
  
# Database name
db = client["GFG"]
  
# Collection name
col = db["gfg"]
  
# Query to be updated
query = { "coursename": "SYSTEM DESIGN" }
  
# New value
newvalue = { "$set": { "coursename": "Computer network" } }
  
# Update the value
col.update_one(query, newvalue)

Output :
 

update_many() 

update_many() method update all the query values. 
 



Syntax: update_many(query, newvalues)


Parameters:
Query: It is the query object. 
newvalues: It is the new values of the document.

Example:
 

Python3




import pymongo
  
  
client = pymongo.MongoClient("mongodb://localhost:27017/")
  
# Database name
db = client["GFG"]
  
# Collection name
col = db["gfg"]
  
# Query to be updated
query = { "coursename": "SYSTEM DESIGN" }
  
# New value
newvalue = { "$set": { "coursename": "Computer network" } }
  
# Update the value
col.update_many(query, newvalue)

Output:

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