Update app.py

app.py

@@ -89,13 +89,15 @@ def main():
   k1= 5
   text_list = []
   causal_sents = []
-  #uploaded_file = PdfReader('sample_anno.pdf')
+  uploaded_file = PdfReader('sample_anno.pdf')
   try:
   #if uploaded_file is not None:
       uploaded_file = st.sidebar.file_uploader("Choose a file", type = "pdf")
     #st.stop()
   except:
-      uploaded_file = PdfReader('sample_anno.pdf')
+      #uploaded_file = PdfReader('sample_anno.pdf')
+      st.error(‘Please upload your own PDF to be analyzed’)
+      continue
   #except:
     #if uploaded_file 
     #st.write("Upload a pdf file...")