如何在 Python 中检测文件是否为二进制(非文本)?
如何在 Python 中判断文件是否为二进制(非文本)?
How can I tell if a file is binary (non-text) in Python?
我正在 Python 中搜索大量文件，并不断获取二进制文件中的匹配项.这使得输出看起来非常混乱.
I am searching through a large set of files in Python, and keep getting matches in binary files. This makes the output look incredibly messy.
我知道我可以使用 grep -I，但我对数据的处理比 grep 允许的要多.
I know I could use grep -I, but I am doing more with the data than what grep allows for.
在过去，我只会搜索大于 0x7f 的字符，但是 utf8 之类的东西在现代系统上是不可能的.理想情况下，解决方案应该很快.
In the past, I would have just searched for characters greater than 0x7f, but utf8 and the like, make that impossible on modern systems. Ideally, the solution would be fast.
您也可以使用 mimetypes 模块:
You can also use the mimetypes module:
import mimetypes
...
mime = mimetypes.guess_type(file)
编译二进制 mime 类型列表相当容易.例如，Apache 分发了一个 mime.types 文件，您可以将其解析为一组列表、二进制和文本，然后检查 mime 是否在您的文本或二进制列表中.
It's fairly easy to compile a list of binary mime types. For example Apache distributes with a mime.types file that you could parse into a set of lists, binary and text and then check to see if the mime is in your text or binary list.