Update app.py

app.py

@@ -32,13 +32,13 @@ def nougat_ocr(file_name):
     subprocess.run(cli_command, stdout=subprocess.PIPE, stderr=subprocess.PIPE, text=True)
 
 def predict(pdf_file, pdf_link):
-    if pdf_file is None and pdf_link == '':
+    if pdf_file is None and not pdf_link:
         return "No data provided. Upload a pdf file or provide a pdf link and try again!", "", ""
 
-    if pdf_file is None:
-        file_name = get_pdf(pdf_link)
-    else:
+    if pdf_file is not None:
         file_name = pdf_file.name
+    else:
+        file_name = get_pdf(pdf_link)
 
     # Call nougat
     nougat_ocr(file_name)
@@ -77,9 +77,9 @@ with gr.Blocks(css=css) as demo:
     gr.HTML("<h3><center>Lukas Blecher et al. <a href='https://arxiv.org/pdf/2308.13418.pdf' target='_blank'>Paper</a>, <a href='https://facebookresearch.github.io/nougat/'>Project</a><center></h3>")
 
     with gr.Row():
-        mkd = gr.Markdown('<h4><center>Upload a PDF</center></h4>', scale=1)
-        mkd = gr.Markdown('<h4><center><i>OR</i></center></h4>', scale=1)
-        mkd = gr.Markdown('<h4><center>Provide a PDF link</center></h4>', scale=1)
+        gr.Markdown('<h4><center>Upload a PDF</center></h4>', scale=1)
+        gr.Markdown('<h4><center><i>OR</i></center></h4>', scale=1)
+        gr.Markdown('<h4><center>Provide a PDF link</center></h4>', scale=1)
 
     with gr.Row(equal_height=True):
         pdf_file = gr.File(label='PDF📃', file_count='single', scale=1)
@@ -96,7 +96,7 @@ with gr.Blocks(css=css) as demo:
     download_link = gr.File(elem_id='download-link', visible=False)
 
     btn.click(fn=predict, inputs=[pdf_file, pdf_link], outputs=[parsed_output, markdown_hidden, download_link], _js=js_auto_copy)
-    clr.click(lambda: (gr.update(value=None), gr.update(value=None), gr.update(value=None)), [], [pdf_file, pdf_link, parsed_output, markdown_hidden, download_link])
+    clr.click(lambda: (gr.update(value=None), gr.update(value=None), gr.update(value=None), gr.update(value=None)), [], [pdf_file, pdf_link, parsed_output, markdown_hidden, download_link])
     dwn.click(None, [download_link], None)
 
 # Enable queueing for request handling