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This question provides a background of this filename parameter.

I need to write a script to access some files on a web server. The filename contains CJK characters which cannot be encoded in ASCII.

$ curl -I 'http://bj.baidupcs.com/file/f6f258963f3c5daaa154ed441db232e1?xcode=f5a142e99df965f6a3b4c502a3c55a73283ef282da2f5c14&fid=1107408242-250528-2625488475&time=1373046574&sign=FDTAXER-DCb740ccc5511e5e8fedcff06b081203-QSIMrWw%2FICWQuExpdtyijM0vbMM%3D&to=bb&fm=N,Q,U&expires=8h&rt=sh&r=210487178&logid=3893215518&sh=1' ...... Content-Disposition: attachment;filename="【动漫之家汉化组】[最强会长黑神][第192话][黑神目泷依然健在][END].zip" ......

As you see, cURL decodes the filename properly. Firefox can also figure out the correct filename.

I wrote my script in Python. I tried requests first:

>>> import requests >>> r=requests.head('http://bj.baidupcs.com/file/f6f258963f3c5daaa154ed441db232e1?xcode=f5a142e99df965f6a3b4c502a3c55a73283ef282da2f5c14&fid=1107408242-250528-2625488475&time=1373046574&sign=FDTAXER-DCb740ccc5511e5e8fedcff06b081203-QSIMrWw%2FICWQuExpdtyijM0vbMM%3D&to=bb&fm=N,Q,U&expires=8h&rt=sh&r=210487178&logid=3893215518&sh=1') >>> r.headers['content-disposition'] 'attachment;filename="ã\x80\x90å\x8a¨æ¼«ä¹\x8b家æ±\x89å\x8c\x96ç»\x84ã\x80\x91[æ\x9c\x80强ä¼\x9aé\x95¿é»\x91ç¥\x9e][第192è¯\x9d][é»\x91ç¥\x9eç\x9b®æ³·ä¾\x9dç\x84¶å\x81¥å\x9c¨][END].zip"'

The filename looks like a weird representation of Python bytes. The problem is that this whole thing is already a Python string. I can't think of a way to get the actual bytes to decode.

>>> type(r.headers['content-disposition']) <class 'str'>

The underlying library requests uses is the http.client standard library. I tried it but got the same thing:

>>> import http.client >>> conn = http.client.HTTPConnection("bj.baidupcs.com") >>> conn.request('HEAD', '/file/f6f258963f3c5daaa154ed441db232e1?xcode=f5a142e99df965f6a3b4c502a3c55a73283ef282da2f5c14&fid=1107408242-250528-2625488475&time=1373046574&sign=FDTAXER-DCb740ccc5511e5e8fedcff06b081203-QSIMrWw%2FICWQuExpdtyijM0vbMM%3D&to=bb&fm=N,Q,U&expires=8h&rt=sh&r=210487178&logid=3893215518&sh=1') >>> r=conn.getresponse() >>> r.getheader('content-disposition') 'attachment;filename="ã\x80\x90å\x8a¨æ¼«ä¹\x8b家æ±\x89å\x8c\x96ç»\x84ã\x80\x91[æ\x9c\x80强ä¼\x9aé\x95¿é»\x91ç¥\x9e][第192è¯\x9d][é»\x91ç¥\x9eç\x9b®æ³·ä¾\x9dç\x84¶å\x81¥å\x9c¨][END].zip"'

I'm using Python 3 on Windows.

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  • I had a similar issue with a subprocess. The subprocess printed unicode text, but thought the OS's locale didn't allow anything outside of ASCII and printed something like what you have above. I fixed it by manually setting the locale: os.environ['LANG'] = 'enUS.UTF-8'. LANG might have been LC_ALL; I can't remember. Commented Jul 5, 2013 at 19:18

1 Answer 1

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3

Looks like you're getting a UTF8-encoded (byte) string back as a Python 3 (Unicode) string. You'll have to do something like...

>>> s = 'attachment;filename="ã\x80\x90å\x8a¨æ¼«ä¹\x8b家æ±\x89å\x8c\x96ç»\x84ã\x80\x91[æ\x9c\x80强ä¼\x9aé\x95¿é»\x91ç¥\x9e][第192è¯\x9d][é»\x91ç¥\x9eç\x9b®æ³·ä¾\x9dç\x84¶å\x81¥å\x9c¨][END].zip"' >>> s = s.encode('latin-1').decode('utf-8') >>> s 'attachment;filename="【动漫之家汉化组】[最强会长黑神][第192话][黑神目泷依然健在][END].zip"'
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