多源环境管理确定
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from sqlalchemy import create_engine
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from sqlalchemy.orm import Session
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from dotenv import load_dotenv
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import os
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# 指定路径必须是指定路径
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load_dotenv(
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dotenv_path=f".env.{os.getenv("ENVIRONMENT",'dev')}", # 指定 .env 文件路径,默认自动查找, 支持自动从当前目录递归向上查询
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override=False, # 是否覆盖已存在的环境变量,默认 False
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verbose=False, # 是否打印调试信息
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encoding="utf-8", # 文件编码
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)
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# load_dotenv() # 默认 .env, 递归向上
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# .env 解析规则: 必须有空格,多个空格有问题?
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db_url = os.getenv("DATABASE_URL")
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print(db_url)
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key_with_q = os.getenv("KEY_WITH_Q")
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print(key_with_q)
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key_with_q1 = os.getenv("KEY_WITH_Q1")
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print(key_with_q1)
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key_with_q2 = os.getenv("KEY_WITH_Q2")
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print(key_with_q2)
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key_without_q = os.getenv("KEY_WITHOUT_Q")
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print(key_without_q)
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# engine = create_engine(db_url)
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# 三种实现方式皆可!
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def get_session():
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# Session = sessionmaker(bind=engine
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# , autoflush=False
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# , autocommit=False
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# )
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# session = Session(engine)
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# try:
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# yield session
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# finally:
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# session.close()
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with Session() as session:
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yield session
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# with Session(engine) as session:
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# yield session
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