(ArcGIS API for Python) Sample of adding an item to AGOL,publishing, overwriting, and updating

Sample.py

#Adding an item to AGOL and publishing it
csv = r'path to csv' 
csvItem = gis.content.add({}, csv)
csvFeatureLayer = csvItem.publish()


#Overwriting a service
#Search for the FeatureService by name 
MyFeatureService = gis.content.search(query='title:SampleTest AND owner:owner')
#Get the id related to the Feature Service
FeatureServiceID = layerID[0].id
#Call overwrite on the feature layer
myFeatureLayercollection = FeatureLayerCollection.fromitem(MyFeatureService)
myFeatureLayercollection.manager.overwrite(r'path tp csv')

#You can also update the csv item by using the update method
MyCSV = gis.content.search(query='title:Sample AND owner:owner') #Get the csvItem
#Grab the item from the array
item = MyCSV[0]
item.update({},r'path to csv')

Thank you Muna!