import pymongomyclient = pymongo.MongoClient("mongodb://localhost:27017/")mydb = myclient["mydatabase"]mycol = mydb["customers"]myquery = { "address": "Valley 345" }newvalues = { "$set": { "address": "Canyon 123" } }mycol.update_one(myquery, newvalues)#print "customers" after the update:for x in mycol.find(): print(x)