$set - As the name implies, this operator sets the value of a field. Let’s take a closer look at these operators: Update Operators for Setting Values: There are numerous MongoDB update operators that can be used to modify a document’s fields. The MongoDB Update Operators for document fields You can use the update_one() or update_many() methods instead of save(). > NOTE: The save() method is also deprecated in newer versions of MongoDB. Because of this, you’ll need plan ahead before writing your code to determine if the API call will be updating just one document or many. If you’re familiar with the update() method used in older versions of MongoDB, please be aware that this method has been deprecated as of MongoDB version 3.x and above. The update() method is deprecated in favor of update_one() and update_many() The Update API methods are quite similar to the Mongo Shell methods updateOne() and updateMany(). Using MongoDB’s Update API methods in PyMongo If the find_one() query found a document, it will print out the document’s contents as a Python dictionary. If find_result != None and type (find_result ) = dict: Print ( "Import the 'ObjectId' class from the 'bson' library" ) Print (err, "- Use pip3 to install bson" ) # pass a doc's ObjectId to find exact doc matchįind_result = db. # call the Collection class's methods using the db object
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