Update app.py

app.py

@@ -7,7 +7,7 @@ demo = gr.Blocks()
 
 with demo:
     d1 = gr.Dropdown(index_options, label='Please select Index...', info='Will be adding more indices later on', interactive=True)
-    d2 = gr.Dropdown([], label='Please Select Stock from your selected index', interactive=True)
+    d2 = gr.Dropdown(label='Please Select Stock from your selected index', interactive=True)
     d3 = gr.Dropdown(time_intervals, label='Select Time Interval', value='1d', interactive=True)
     d4 = gr.Radio(['Line Graph', 'Candlestick Graph'], label='Select Graph Type', value='Line Graph', interactive=True)
     d5 = gr.Dropdown(['ARIMA', 'Prophet', 'LSTM'], label='Select Forecasting Method', value='ARIMA', interactive=True)
@@ -18,11 +18,15 @@ with demo:
     inputs = [d1, d2, d3, d4, d5]
     outputs = [out_graph, out_fundamentals]
 
-    d1.input(get_stocks_from_index, d1, d2)
-    d2.input(get_stock_graph_and_info, inputs, outputs)
-    d3.input(get_stock_graph_and_info, inputs, outputs)
-    d4.input(get_stock_graph_and_info, inputs, outputs)
-    d5.input(get_stock_graph_and_info, inputs, outputs)
+    def update_stock_options(index):
+        stocks = get_stocks_from_index(index)
+        return gr.Dropdown(choices=stocks)
+
+    d1.change(update_stock_options, d1, d2)
+    d2.change(get_stock_graph_and_info, inputs, outputs)
+    d3.change(get_stock_graph_and_info, inputs, outputs)
+    d4.change(get_stock_graph_and_info, inputs, outputs)
+    d5.change(get_stock_graph_and_info, inputs, outputs)
 
 if __name__ == "__main__":
     demo.launch()