yagmail报错:UnicodeDecodeError: ‘utf-8‘ codec can‘t decode byte 0x82 in position 0: invalid start byte

## yagmail sends an email and reports an error
Python reads the file UnicodeDecodeError: 'utf-8' codec can't decode byte 0x82 in position 0: invalid start byte Reason for the error: The
host name is a non-ascii character (in vernacular: the computer name needs to be changed, if If it is Chinese, change it to English or other)

The way to check the host name: open cmd ——> enter ipconfig/all
the modification method: Settings—>system—>about——>rename the computer.
After restarting, the problem will be solved! ! ! (thanks to the team leader for his help)