Pymongo: How to check if the update was successful ?

Question

How to check if the update was successful in Pymongo? If the record was updated with the same value it should be considered a successful update. ie, Even if the modified count is zero it is considered a successful update. How to do this.

result = _db.testcollection.update_one({"_id": col_id}, {"$set": obj})
return True if result.modified_count > 0 else False

This works well if the value is changed. But I want to return true even when technically the record was not changed because the record is same what we are trying to update.

How to do this?

Answer 1

The below solution worked for me.Check matched_count instead of modified_count. If there were a matched records and no exception it means that it is successful.

try:
    result = _db.testcollection.update_one({"_id": col_id}, {"$set": obj})
    return result.matched_count > 0 
except:pymongo.errors.PyMongoError as e:
    return False