如何修复或删除Python3中格式错误的utf-8字符

try:
    with open('file.txt', 'r', encoding='utf-8') as f:
        content = f.read()
except UnicodeDecodeError as e:
    # 忽略错误字符
    content = e.object[e.start:e.end].decode('utf-8', 'ignore')

text = '包含格式错误的UTF-8字符'
try:
    encoded_text = text.encode('utf-8', errors='ignore')
    decoded_text = encoded_text.decode('utf-8', errors='ignore')
except UnicodeDecodeError as e:
    # 删除错误字符
    decoded_text = ''.join(c for c in text if ord(c) < 65536)

import ftfy

text = '包含格式错误的UTF-8字符'
fixed_text = ftfy.fix_text(text)