pycharm运行可以正常显示，浏览器打开乱码问题

在pycharm运行可以正常显示，保存为html文件后pycharm打开也变成了乱码，浏览器打开也是乱码
from urllib.request import urlopen

url="http://www.baidu.com"
resp = urlopen(url)
with open('mybaidu.html',mode='w') as f:
f.write(resp.read().decode("utf-8"))

from urllib.request import urlopen

url="http://www.baidu.com"
resp = urlopen(url)
with open('mybaidu.html',mode='wb') as f:
    f.write(resp.read())