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import pymongo
​
myclient = 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)