本文介绍了如何使用 Python 识别二进制文件和文本文件?的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着跟版网的小编来一起学习吧！
问题描述
我需要确定目录中哪个文件是二进制，哪个是文本.
I need identify which file is binary and which is a text in a directory.
我尝试使用 mimetypes 但在我的情况下这不是一个好主意，因为它无法识别所有文件 mime，而且我这里有陌生人...我只需要知道，二进制或文本.简单的 ?但是我找不到解决方案...
I tried use mimetypes but it isnt a good idea in my case because it cant identify all files mimes, and I have strangers ones here... I just need know, binary or text. Simple ? But I couldnt find a solution...
谢谢
推荐答案
谢谢大家，我找到了适合我的问题的解决方案.我在 http://code.activestate.com/recipes/173220/ 和我只改变了一点以适合我.
Thanks everybody, I found a solution that suited my problem. I found this code at http://code.activestate.com/recipes/173220/ and I changed just a little piece to suit me.
它工作正常.
from __future__ import division
import string
def istext(filename):
s=open(filename).read(512)
text_characters = "".join(map(chr, range(32, 127)) + list("
"))
_null_trans = string.maketrans("", "")
if not s:
# Empty files are considered text
return True
if " " in s:
# Files with null bytes are likely binary
return False
# Get the non-text characters (maps a character to itself then
# use the 'remove' option to get rid of the text characters.)
t = s.translate(_null_trans, text_characters)
# If more than 30% non-text characters, then
# this is considered a binary file
if float(len(t))/float(len(s)) > 0.30:
return False
return True
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