如何在Google Analytics API中使用维度筛选器来忽略记录？

from google.oauth2.service_account import Credentials
from googleapiclient.discovery import build

# 设置API凭据和视图ID
credentials = Credentials.from_service_account_file('path/to/your/credentials.json')
view_id = 'your_view_id'

# 构建API客户端
analytics = build('analyticsreporting', 'v4', credentials=credentials)

# 定义筛选器
dimension_filter = {
    "dimensionName": "ga:source",
    "operator": "EXACT",
    "expressions": ["(not set)"]
}

# 构建请求体
request_body = {
    "reportRequests": [
        {
            "viewId": view_id,
            "dateRanges": [{"startDate": "7daysAgo", "endDate": "today"}],
            "metrics": [{"expression": "ga:sessions"}],
            "dimensions": [{"name": "ga:source"}],
            "dimensionFilterClauses": [
                {
                    "filters": [dimension_filter]
                }
            ]
        }
    ]
}

# 发送请求并获取响应
response = analytics.reports().batchGet(body=request_body).execute()
print(response)