windows and file names > 256 bytes

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From	Albert-Jan Roskam <sjeik_appie@hotmail.com>
Subject	windows and file names > 256 bytes
Date	Thu, 25 Jun 2015 08:00:02 +0000 (UTC)
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Hi,

Consider the following calls, where very_long_path is more than 256 bytes:
[1] os.mkdir(very_long_path)
[2] os.getsize(very_long_path)
[3] shutil.rmtree(very_long_path)

I am using Python 2.7 and [1] and [2] fail under Windows XP [3] fails 
under Win7 (not sure about XP). It throws: “WindowsError: [Error 206] The 
filename or extension is too long” This is even when I use the "special" 
notations \\?\c:\dir\file or \\?\UNC\server\share\file, e.g.
os.path.getsize("\\\\?\\" + "c:\\dir\\file")
(Oddly, os.path.getsize(os.path.join("\\\\?", "c:\\dir\\file")) will 
truncate the prefix)

My questions:
1. How can I get the file size of very long paths under XP?
2. Is this a bug in Python? I would prefer if Python dealt with the gory 
details of Windows' silly behavior.

Regards,
Albert-Jan

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Thread

windows and file names > 256 bytes Albert-Jan Roskam <sjeik_appie@hotmail.com> - 2015-06-25 08:00 +0000
  Re: windows and file names > 256 bytes Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2015-06-25 19:16 +1000
    Re: windows and file names > 256 bytes Chris Angelico <rosuav@gmail.com> - 2015-06-25 19:23 +1000
    Re: windows and file names > 256 bytes Tim Golden <mail@timgolden.me.uk> - 2015-06-25 11:10 +0100
    Re: windows and file names > 256 bytes Chris Angelico <rosuav@gmail.com> - 2015-06-25 20:23 +1000
    Re: windows and file names > 256 bytes Terry Reedy <tjreedy@udel.edu> - 2015-06-25 13:03 -0400

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