add api key input

app.py

@@ -101,7 +101,10 @@ def postprocess(input_txt, output_txt_list):
     return '\n'.join(results)
 
 
-def filter(pos_tags, neg_tags, input_txt):
+def filter(api_key, pos_tags, neg_tags, input_txt):
+    if api_key is None or api_key == '':
+        return 'OPENAI API Key is not set.'
+    openai.api_key = api_key
     input_txt_list = preprocess(input_txt)
     output_txt_list = []
     for txt in input_txt_list:
@@ -118,6 +121,12 @@ if __name__ == '__main__':
     with gr.Blocks() as demo:
         with gr.Row():
             with gr.Column(scale=0.3):
+                with gr.Row():
+                    api_key = gr.Textbox(
+                        lines=1,
+                        label='OPENAI API Key',
+                        elem_id='api_key_textbox',
+                        placeholder='Enter your OPENAI API Key')
                 with gr.Row():
                     pos_txt = gr.Textbox(
                         lines=2,
@@ -148,7 +157,7 @@ if __name__ == '__main__':
                 output_txt = output_txt.style(height=690)
             submit.click(
                 filter,
-                [pos_txt, neg_txt, input_txt],
+                [api_key, pos_txt, neg_txt, input_txt],
                 [output_txt])
             clear.click(
                 lambda: ['', '', ''],