Update app.py

app.py

@@ -18,10 +18,11 @@ except: print('images dir might already exist...')
 def download_local(url):
     resp = requests.get(url, allow_redirects=True)    
     filename, file_extension = os.path.splitext(url)
+    filename = os.path.basename(url)
     if file_extension == '':
-        file_extension = '.jpg'
+        filename = filename+'.jpg'
         
-    filename = 'images/{}_{}{}'.format(int(time.time()), filename, file_extension)
+    filename = 'images/{}_{}'.format(int(time.time()), filename)
     with open(filename, 'wb') as handler:
         handler.write(resp.content)
     return filename