update app.py

app.py

@@ -5,8 +5,10 @@ from kor import create_extraction_chain, Object, Text
 from langchain.prompts.prompt import PromptTemplate
 from langchain.chains import LLMChain
 from langchain.llms import OpenAI
-import os
-os.environ['OPENAI_API_KEY']="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"
+
+from dotenv import load_dotenv
+
+load_dotenv()
 def gen_text(pdf_file):
     with open(pdf_file.name, "rb") as f:
         reader = PdfReader(f)