[issue24196] Fail to create file if name starts with prn.

[Antoine Pitrou]

Changes by Antoine Pitrou :


--
stage:  -> resolved
status: open -> closed

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[issue24196] Fail to create file if name starts with prn.

[Steve Dower]

Steve Dower added the comment:

It's a name reserved by Windows - see 
https://msdn.microsoft.com/en-us/library/windows/desktop/aa365247.aspx#file_and_directory_names

If you have a full (and 100% resolved) path, you can prefix it with \\?\ (plus 
escaping) to access a file by that name, but I wouldn't recommend it as you'll 
probably break Explorer.

In any case, this is an OS limitation and not a Python issue.

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resolution:  -> not a bug

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[issue24196] Fail to create file if name starts with prn.

[Martin Panter]

Martin Panter added the comment:

I could be wrong, but I thought this was normal Windows behaviour, not related 
to Python. Same probably applies to other special names like NUL, COM1.

--
components: +Windows
nosy: +tim.golden, vadmium, zach.ware

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[issue24196] Fail to create file if name starts with prn.

[Antoine Pitrou]

Changes by Antoine Pitrou :


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nosy: +steve.dower

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[issue24196] Fail to create file if name starts with prn.

[Boris]

New submission from Boris:

>>> f=open('prn.txt','w')
Traceback (most recent call last):
  File "", line 1, in 
f=open('prn.txt','w')
FileNotFoundError: [Errno 2] No such file or directory: 'prn.txt'

Names that fail:
prn.
prn.txt
prn.yourmmama.txt
...

Names that do not fail:
prn
prn_.txt
npr.txt
...

Happens on Windows 7, Python3.3, both 32 bit and 64 bit
This should be easy to replicate.

--
components: IO
messages: 243219
nosy: borisompol
priority: normal
severity: normal
status: open
title: Fail to create file if name starts with prn.
type: behavior
versions: Python 3.3

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