Character sheet creation

app.py

@@ -38,6 +38,7 @@ upload_img = (st.file_uploader("输入character sheet", "png", accept_multiple_f
 
 if st.button('RUN!'):
     if upload_img is not None:
+        os.makedirs("character_sheet", exist_ok=True)
         for i in range(len(upload_img)):
             with open('character_sheet/{}.png'.format(i), 'wb') as f:
                 f.write(upload_img[i].read())