Update app.py

app.py

@@ -413,8 +413,12 @@ def itt(url):
                 print(f'{url}.{i}.{d}_{p}.pdf')
                 print(r1.status_code)
                 if r1.status_code == 429:
-                    time.sleep(30)                
-                if r1.status_code == 200:
+                    while True:
+                        r1=requests.get(f'{url}.{i}.{d}.pdf')
+                        if r1.status_code==429:
+                            time.sleep(61)
+                        else:
+                            break                if r1.status_code == 200:
                     out.append(f'{url}.{i}.{d}_{p}.pdf')
                     yield out            
         yield out