以下是一个示例代码，展示如何在不同账户中创建Kops实例组：

import boto3

# 设置不同账户的访问凭证
aws_access_key_id = 'YOUR_AWS_ACCESS_KEY_ID'
aws_secret_access_key = 'YOUR_AWS_SECRET_ACCESS_KEY'

# 创建不同账户的Kops客户端
kops_client_account1 = boto3.client('kops', region_name='us-west-2', aws_access_key_id=aws_access_key_id_account1, aws_secret_access_key=aws_secret_access_key_account1)
kops_client_account2 = boto3.client('kops', region_name='us-west-2', aws_access_key_id=aws_access_key_id_account2, aws_secret_access_key=aws_secret_access_key_account2)

# 在不同账户中创建Kops实例组
def create_kops_instance_group(account_client):
    response = account_client.create_instance_group(
        ClusterName='my-kubernetes-cluster',
        InstanceGroupName='worker-nodes',
        MachineType='t2.micro',
        MinSize=1,
        MaxSize=3
    )
    print(response)

# 在不同账户中调用函数创建Kops实例组
create_kops_instance_group(kops_client_account1)
create_kops_instance_group(kops_client_account2)

请注意，此代码示例假设您已安装并配置了AWS CLI，并且已通过aws configure命令设置了访问凭证。您需要将示例中的YOUR_AWS_ACCESS_KEY_ID和YOUR_AWS_SECRET_ACCESS_KEY替换为您的实际访问凭证。