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import os print(os.getenv("LANGSMITH_PROJECT")) print(os.getenv("LANGSMITH_TRACING")) print(os.getenv("LANGSMITH_ENDPOINT")) print(os.getenv("LANGSMITH_API_KEY"))
utils.get_env_var.cache_clear()
from dotenv import load_dotenv import os load_dotenv(<.env 文件路径>, override=True)