import pymongo

​

myclient = pymongo.MongoClient("mongodb://localhost:27017/")

mydb = myclient["mydatabase"]

mycol = mydb["customers"]

​

myquery = { "address": { "$regex": "^S" } }

​

newvalues = { "$set": { "name": "Minnie" } }

​

x = mycol.update_many(myquery, newvalues)

​

print(x.modified_count, "documents updated.")

​