Error: name key is not defined dynamodb

What's Causing This Error

This error occurs in Python when referring to the Key module in a query operation without importing it.

Solution: Here's How To Resolve It

To resolve the error, import the Key module, as shown below.

import boto3 

// import Key
from boto3.dynamodb.conditions import Key

Afterwards, you can execute a DynamoDB query, as shown below.

dynamodb = boto3.resource('dynamodb') 
table = dynamodb.Table('Employees')

response = table.query(KeyConditionExpression=Key('pk').eq('USER#1'))