Requirements.txt added

model.py

@@ -14,7 +14,6 @@ from langchain_openai import AzureChatOpenAI
 from langgraph.graph.state import CompiledStateGraph
 from langgraph.prebuilt import tools_condition
 from langgraph.prebuilt import ToolNode
-import matplotlib.pyplot as plt
 
 from typing import Optional
 
@@ -60,6 +59,7 @@ class AssistantModel:
         return {"messages": [self.llm_with_tools.invoke([sys_msg] + state["messages"])]}
 
     def show_graph(self):
+        import matplotlib.pyplot as plt
         # python -m pip install --config-settings="--global-option=build_ext" --config-settings="--global-option=-IC:\Program Files\Graphviz\include" --config-settings="--global-option=-LC:\Program Files\Graphviz\lib" pygraphviz
         png = self.graph.get_graph(xray=True).draw_png()
         image = Image.open(io.BytesIO(png))

requirements.txt

@@ -0,0 +1,7 @@
+pandas
+langgraph
+langchain_openai
+langchain_core
+langchain_community
+langchain_tavily
+