give me a example about how to use describe_replication_task_assessment_runs api in boto3 by python

Sure, here's an example:

import boto3

client = boto3.client('dms')

response = client.describe_replication_task_assessment_runs(
    Filters=[
        {
            'Name': 'replication-task-arn',
            'Values': ['arn:aws:dms:us-west-2:123456789012:task:ABCD1234']
        },
    ],
)

print(response)

In this example, we use the `describe_replication_task_assessment_runs` API to retrieve information about replication task assessment runs. We specify a filter based on the `replication-task-arn` attribute, which takes the Amazon Resource Name (ARN) of the replication task as its value. The response will contain information about all assessment runs for the specified replication task.