Update app.py

app.py

@@ -129,29 +129,37 @@ description = """ PDF GPT allows you to chat with your PDF file using Universal
 
 st.markdown(description)
 
-openAI_key = st.sidebar.text_input('Enter your OpenAI API key here')
-
-col1, col2, col3, col4 = st.columns(4)
-
-with col1:
-    url = st.text_input('PDF URL')
-with col2:
-    question = st.text_input('Question')
-with col3:
-    answer_placeholder = st.empty()  
-    answer_placeholder.text_area('Answer', value='') 
-with col4:
-    if st.button('Submit'):
-        if openAI_key.strip()=='':
-            st.error('Please enter you Open AI Key')
-        elif url.strip() == '':
-            st.error('URL field is empty')
-        elif question.strip() == '':
-            st.error('Question field is empty')
-        else:
-            glob_url = url
-            download_pdf(glob_url, 'corpus.pdf')
-            load_recommender('corpus.pdf')
-
-            answer = generate_answer(question,openAI_key)
-            answer_placeholder.text_area('Answer', value=answer) 
+openAI_key = st.sidebar.text_input('API Key', value='sk-')
+
+add_row = st.sidebar.button("Add row")
+row_count = st.session_state.get("row_count", 1)
+
+if add_row:
+    row_count += 1
+    st.session_state.row_count = row_count
+
+for i in range(row_count):
+    col1, col2, col3, col4 = st.columns(4)
+
+    with col1:
+        url = st.text_input(f'PDF URL {i+1}', key=f'url{i}')
+    with col2:
+        question = st.text_input(f'Question {i+1}', key=f'question{i}')
+    with col3:
+        answer_placeholder = st.empty()  
+        answer_placeholder.text_area(f'Answer {i+1}', key=f'answer{i}', value='') 
+    with col4:
+        if st.button(f'Submit {i+1}'):
+            if openAI_key.strip()=='':
+                st.error('Please enter you Open AI Key')
+            elif url.strip() == '':
+                st.error('URL field is empty')
+            elif question.strip() == '':
+                st.error('Question field is empty')
+            else:
+                glob_url = url
+                download_pdf(glob_url, 'corpus.pdf')
+                load_recommender('corpus.pdf')
+
+                answer = generate_answer(question,openAI_key)
+                answer_placeholder.text_area(f'Answer {i+1}', key=f'answer{i}', value=answer)