如何在python中编写一个检查以查看文件是否有效UTF-8？

pip install chardet

import chardet

def is_valid_utf8(file_path):
    with open(file_path, 'rb') as f:
        data = f.read()
        result = chardet.detect(data)
        encoding = result['encoding']
        confidence = result['confidence']
        if encoding == 'utf-8' and confidence > 0.9:
            return True
        else:
            return False

# 示例用法
file_path = 'path/to/your/file.txt'
if is_valid_utf8(file_path):
    print('文件有效的UTF-8编码')
else:
    print('文件无效的UTF-8编码')