Updating product information

The core classes used for updates are update_one() and update_many(). The difference between the two is that the latter potentially affects multiple documents. Here is the generic syntax. The parameters in square brackets [] are optional:

update_one(<filter>, <update>, [<upsert>, \
    <bypass_document_validation>, <collation>, \
    <array_filters>, <session>])

The arguments match their mongo shell equivalents and are summarized here:

Parameter	Default	Notes
filter	--	A query dictionary that is identical to that used for the find() method.
update	--	A $set : { key / value pairs } dictionary, where the key corresponds to the field and the value is the updated information.
upsert	False	If set to True, a new document is added if the query filter does not find a match.
bypass_document_validation	False	If set to True, the write operation is instructed not to validate. This improves performance at the cost...