Update app.py

app.py

@@ -1049,7 +1049,7 @@ if uploaded_files:
                                 for g in concat['genes_locus'][i].split(','):
                                     L.append({
                                         'Title' : concat['title'][0],
-                                        'Author' : concat['authors'][0],
+                                        'Author' : concat['authors'][0] if 'authors' in list(concat.columns) else '',
                                         'Publisher Name' : concat['publisher'][0] if 'publisher' in list(concat.columns) else '',
                                         'Publication Year' : get_valid_year(' '.join(concat['publication_year'].values.tolist())),
                                         'Genes' : g.upper(),
@@ -1066,7 +1066,7 @@ if uploaded_files:
                                     try:
                                         L.append({
                                             'Title' : concat['title'][0],
-                                            'Author' : concat['authors'][0],
+                                            'Author' : concat['authors'][0] if 'authors' in list(concat.columns) else '',
                                             'Publisher Name' : concat['publisher'][0] if 'publisher' in list(concat.columns) else '',
                                             'Publication Year' : get_valid_year(' '.join(concat['publication_year'].values.tolist())),
                                             'Genes' : get_geneName(s.strip()).upper(),
@@ -1081,7 +1081,7 @@ if uploaded_files:
                                     except Exception as e:
                                         L.append({
                                             'Title' : concat['title'][0],
-                                            'Author' : concat['authors'][0],
+                                            'Author' : concat['authors'][0] if 'authors' in list(concat.columns) else '',
                                             'Publisher Name' : concat['publisher'][0] if 'publisher' in list(concat.columns) else '',
                                             'Publication Year' : get_valid_year(' '.join(concat['publication_year'].values.tolist())),
                                             'Genes' : '',