Create a feature layer

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                    // After adding the feature, save it to your portal
                    portal.load().then(() => {
                        // Get the user's content
                        const userContent = portal.user.content;

                        // Add the feature layer as an item to ArcGIS Online
                        userContent.add(layer).then((item) => {
                            console.log('Feature layer added to ArcGIS Online:', item);
                        });

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                    userContent.add(featureLayer).then(function(item) {
                        console.log('Feature layer added to ArcGIS portal:', item);
                    });

                    featureLayer.applyEdits({
                        addFeatures: [{
                            geometry: geometry
                        }]
                    }).then(function() {
                        console.log('Point feature added to feature layer.');
                    });

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# Path to your CSV file
csv_file_path = r"path/to/your/csv/file.csv"

# Specify properties for the feature layer
item_properties = {
    "title": "My CSV Feature Layer",
    "tags": "csv, feature layer",
    "type": "CSV"
}

# Add the CSV file as an item to ArcGIS Online
csv_item = gis.content.add(item_properties, csv_file_path)

# Publish the CSV file as a feature layer
feature_layer_item = csv_item.publish(None)

# Share the feature layer with everyone (optional)
feature_layer_item.share(everyone=True)