使用 Python 建立 TCP 連線
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使用 Python 開啟與 SQL Server 適用的 Cloud SQL 的 TCP 連線。
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[[["容易理解","easyToUnderstand","thumb-up"],["確實解決了我的問題","solvedMyProblem","thumb-up"],["其他","otherUp","thumb-up"]],[["難以理解","hardToUnderstand","thumb-down"],["資訊或程式碼範例有誤","incorrectInformationOrSampleCode","thumb-down"],["缺少我需要的資訊/範例","missingTheInformationSamplesINeed","thumb-down"],["翻譯問題","translationIssue","thumb-down"],["其他","otherDown","thumb-down"]],[],[],[],null,["# Create a TCP connection by using Python\n\nOpen a TCP connection to Cloud SQL for SQL Server by using Python.\n\nExplore further\n---------------\n\n\nFor detailed documentation that includes this code sample, see the following:\n\n- [Connect from App Engine flexible environment](/sql/docs/sqlserver/connect-app-engine-flexible)\n- [Connect from App Engine standard environment](/sql/docs/sqlserver/connect-app-engine-standard)\n- [Connect from Cloud Build](/sql/docs/sqlserver/connect-build)\n- [Connect from Cloud Run](/sql/docs/sqlserver/connect-run)\n- [Connect from Cloud Run functions](/sql/docs/sqlserver/connect-functions)\n- [Connect using the Cloud SQL Auth Proxy](/sql/docs/sqlserver/connect-auth-proxy)\n\nCode sample\n-----------\n\n### Python\n\n\nTo authenticate to Cloud SQL for SQL Server, set up Application Default Credentials.\nFor more information, see\n\n[Set up authentication for a local development environment](/docs/authentication/set-up-adc-local-dev-environment).\n\n import os\n\n import sqlalchemy\n\n\n def connect_tcp_socket() -\u003e sqlalchemy.engine.base.Engine:\n \"\"\"Initializes a TCP connection pool for a Cloud SQL instance of SQL Server.\"\"\"\n # Note: Saving credentials in environment variables is convenient, but not\n # secure - consider a more secure solution such as\n # Cloud Secret Manager (https://cloud.google.com/secret-manager) to help\n # keep secrets safe.\n db_host = os.environ[\n \"INSTANCE_HOST\"\n ] # e.g. '127.0.0.1' ('172.17.0.1' if deployed to GAE Flex)\n db_user = os.environ[\"DB_USER\"] # e.g. 'my-db-user'\n db_pass = os.environ[\"DB_PASS\"] # e.g. 'my-db-password'\n db_name = os.environ[\"DB_NAME\"] # e.g. 'my-database'\n db_port = os.environ[&q\u003cuot;DB_\u003eP\u003cORT&quo\u003et\u003c;] # e\u003e.\u003cg. 1433\u003e\n \u003c\n po\u003eol = sqlalchemy.create_engine(\n # Equivalent URL:\n # mssql+pytds://db_user:db_pass@db_host:db_port/db_name\n sqlalchemy.engine.url.URL.create(\n drivername=\"mssql+pytds\",\n username=db_user,\n password=db_pass,\n database=db_name,\n host=db_host,\n port=db_port,\n ),\n # ...\n )\n\n return pool\n\nWhat's next\n-----------\n\n\nTo search and filter code samples for other Google Cloud products, see the\n[Google Cloud sample browser](/docs/samples?product=cloud_sql_sqlserver)."]]