Error: name key is not defined dynamodb

NameError: name 'Key' is not defined is a Python name-resolution error. Import the boto3 condition helper before building a resource-level query; changing DynamoDB permissions will not fix it.

import boto3
from boto3.dynamodb.conditions import Key

table = boto3.resource("dynamodb").Table("Employees")
response = table.query(
    KeyConditionExpression=Key("pk").eq("USER#1")
)
print(response.get("Items", []))

Use the case-sensitive class name Key. It builds key conditions for the resource API; Attr is the helper for non-key filter conditions. A low-level boto3 client expects a string KeyConditionExpression and typed ExpressionAttributeValues instead of these condition objects.

If the import exists but the error remains, check whether it is inside a function or conditional branch that did not execute. Ensure pk is actually the partition key of the table or index being queried, and paginate if the response contains LastEvaluatedKey.

See Python query examples and AWS documentation.