Update backend.py

backend.py

@@ -8,3 +8,19 @@ from langchain.prompts import PromptTemplate
 
 os.environ["GOOGLE_API_KEY"]="AIzaSyC8W6-q0Db2200MDE3LpsVZPrkzXZUUuW0"
 
+class InvoicePipeline:
+    #This fuction will help in extracting and run the code, and will produce dataframe for us
+    def run(self) -> pd.DataFrame:
+        df=pd.DataFrame(
+            "Invoice ID": pd.Series(dtype = "int"),
+            "DESCRIPTION": pd.Series(dtype = "str"),
+            "Issue Date": pd.series(dtype = "str"),
+            "Unit Price": pd.Series(dtype = "str"),
+            "Amount": pd.Series(dtype = "int"),
+            "Bill For":pd.Series(dtype="str"),
+            "From": pd.Series(dtype = "str"),
+            "Terms": pd.Series(dtype= "str")
+        
+        )
+    
+