Python報UnicodeDecodeError: 'gbk' codec can't decode byte 0xad in position的解決辦法

with open("input.txt") as f:
    for line in f:
        print(line)

按行讀取文本文件時報錯：UnicodeDecodeError: 'gbk' codec can't decode byte 0xad in position...

解決辦法：

with open("input.txt",encoding='utf-8') as f:
    for line in f:
        print(line)