如何在python中编写检查以查看文件是否有效UTF-8？

Question

正如标题所述，我想检查给定的文件对象（打开为二进制流）是有效的UTF-8文件。

有人吗？

感谢

Answer 1

你可以做类似

import codecs 
try: 
    f = codecs.open(filename, encoding='utf-8', errors='strict') 
    for line in f: 
     pass 
    print "Valid utf-8" 
except UnicodeDecodeError: 
    print "invalid utf-8" 

Answer 2

def try_utf8(data): 
    "Returns a Unicode object on success, or None on failure" 
    try: 
     return data.decode('utf-8') 
    except UnicodeDecodeError: 
     return None 

data = f.read() 
udata = try_utf8(data) 
if udata is None: 
    # Not UTF-8. Do something else 
else: 
    # Handle unicode data