Update app.py

app.py

@@ -224,24 +224,18 @@ def transfer_learning_forecasting():
                 st.session_state.df = df
                 st.session_state.uploaded_file = uploaded_file
             else:
-                df = load_default()  
+                df = load_default()
                 st.session_state.df = df
-
         else:
-            if st.checkbox("Upload a new file(CSV)"):
+            if st.checkbox("Upload a new file (CSV)"):
                 uploaded_file = st.file_uploader("Upload your time series data (CSV)", type=["csv"])
                 if uploaded_file:
                     df = pd.read_csv(uploaded_file)
                     st.session_state.df = df
                     st.session_state.uploaded_file = uploaded_file
                 else:
-                    uploaded_file = st.session_state.uploaded_file
-                    df = pd.read_csv(uploaded_file)
                     df = st.session_state.df
-                    
             else:
-                uploaded_file = st.session_state.uploaded_file
-                df = pd.read_csv(uploaded_file)
                 df = st.session_state.df