Update app.py

app.py

@@ -139,7 +139,7 @@ def generate_streamlit_app_code(app_title, app_subtitle, side_panel_title, analy
     # Here we make sure the analysis functions are correctly indented at the same level as the main function
     analysis_functions_code = "\n    ".join([PREDEFINED_ANALYSIS[task]['Code'].replace("\n", "\n    ") for task in analysis_tasks])
     # Here we ensure that calls to analysis functions are correctly indented within the main function
-    analysis_tasks_code = "\n".join([f"        {PREDEFINED_ANALYSIS[task]['Function']}(df)" for task in analysis_tasks])
+    analysis_tasks_code = "\n        if not df.empty:\n" + "\n".join([f"            {PREDEFINED_ANALYSIS[task]['Function']}(df)" for task in analysis_tasks])
     
     # The exception handling block has been removed as per your request
     code = f"""import streamlit as st
@@ -156,8 +156,10 @@ def main():
 
     uploaded_file = st.file_uploader("Upload a CSV file", type=["csv"])
 
+    df = pd.DataFrame()  # Initialize an empty DataFrame
+
     if uploaded_file is not None:
-        @st.cache
+        @st.cache_data  # Correct the caching decorator
         def load_data(uploaded_file):
             return pd.read_csv(uploaded_file)
 
@@ -165,7 +167,7 @@ def main():
 
 {analysis_functions_code}
         
-        # Analysis task calls
+        # Analysis task calls, only executed if df is not empty
 {analysis_tasks_code}
 
 if __name__ == "__main__":
@@ -173,6 +175,7 @@ if __name__ == "__main__":
 """
     return code
 
+
 def main():
     st.title("Streamlit App Generator")