Question

How do you update an item in DynamoDB using AWS SDK for Python (Boto3)?

Answer 1

Here is an example of how to update an item in DynamoDB using Boto3:

import boto3

# Initialize a session using Amazon DynamoDB
dynamodb = boto3.resource('dynamodb')

# Select your table
table = dynamodb.Table('YourTableName')

# Update an item in the table
response = table.update_item(
    Key={
        'PrimaryKeyAttribute': 'Value1',
        'SortKeyAttribute': 'Value2'  # Only if you have a composite primary key
    },
    UpdateExpression="set Attribute1 = :val1",
    ExpressionAttributeValues={
        ':val1': 'NewValue'
    },
    ReturnValues="UPDATED_NEW"
)

print("UpdateItem succeeded:")
print(response)