eryksun added the comment:
This issue doesn't pertain to the 64-bit version.
C:\Temp>py -3.5
Python 3.5.0 (v3.5.0:374f501f4567, Sep 13 2015, 02:27:37)
[MSC v.1900 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import shutil
>>> shutil.copy2('test.txt', 'C:\\')
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "C:\Program Files\Python 3.5\lib\shutil.py", line 251, in copy2
copyfile(src, dst, follow_symlinks=follow_symlinks)
File "C:\Program Files\Python 3.5\lib\shutil.py", line 115, in copyfile
with open(dst, 'wb') as fdst:
PermissionError: [Errno 13] Permission denied: 'C:\\test.txt'
In the 32-bit version, creating a file in the system root directory gets
virtualized when the user doesn't have write access. It's not specific to
shutil.copy2.
C:\Temp>py -3.5-32
Python 3.5.0 (v3.5.0:374f501f4567, Sep 13 2015, 02:16:59)
[MSC v.1900 32 bit (Intel)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> open('C:\\test.txt', 'w').close()
>>> import pathlib
>>> pathlib.Path('C:\\test.txt').resolve()
WindowsPath('C:/Users/usradm/AppData/Local/VirtualStore/test.txt')
You can verify in the task manager's details tab that UAC Virtualization is
enabled for 32-bit python.exe and disabled for 64-bit python.exe. The problem
is that the manifest is missing the requestedExecutionLevel, which should be
present and set to "asInvoker". This is discussed in the MSDN article [New UAC
Technologies for Windows Vista][1].
>>> os.system('sigcheck -q -m "%s"' % sys.executable)
c:\users\usradm\appdata\local\programs\python\python35-32\python.exe:
Verified: Signed
Signing date: 2:17 AM 9/13/2015
Publisher: Python Software Foundation
Description: Python
Product: Python
Prod version: 3.5.0
File version: 3.5.0
MachineType: 32-bit
Manifest:
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<assembly xmlns="urn:schemas-microsoft-com:asm.v1" manifestVersion="1.0">
<compatibility xmlns="urn:schemas-microsoft-com:compatibility.v1">
<application>
<supportedOS Id="{e2011457-1546-43c5-a5fe-008deee3d3f0}"/>
<supportedOS Id="{35138b9a-5d96-4fbd-8e2d-a2440225f93a}"/>
<supportedOS Id="{4a2f28e3-53b9-4441-ba9c-d69d4a4a6e38}"/>
<supportedOS Id="{1f676c76-80e1-4239-95bb-83d0f6d0da78}"/>
<supportedOS Id="{8e0f7a12-bfb3-4fe8-b9a5-48fd50a15a9a}"/>
</application>
</compatibility>
</assembly>
3.4's manifest sets the requestedExecutionLevel:
C:\Temp>py -3.4-32
Python 3.4.3 (v3.4.3:9b73f1c3e601, Feb 24 2015, 22:43:06)
[MSC v.1600 32 bit (Intel)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import os, sys
>>> os.system('sigcheck -q -m "%s"' % sys.executable)
c:\users\usradm\appdata\local\programs\python\python34-32\python.exe:
Verified: Unsigned
Link date: 9:43 PM 2/24/2015
Publisher: n/a
Description: n/a
Product: n/a
Prod version: n/a
File version: n/a
MachineType: 32-bit
Manifest:
<assembly xmlns="urn:schemas-microsoft-com:asm.v1" manifestVersion="1.0">
<trustInfo xmlns="urn:schemas-microsoft-com:asm.v3">
<security>
<requestedPrivileges>
<requestedExecutionLevel level="asInvoker"
uiAccess="false"></requestedExecutionLevel>
</requestedPrivileges>
</security>
</trustInfo>
</assembly>
[1]: https://msdn.microsoft.com/en-us/library/bb756960
----------
components: +Windows -Library (Lib)
keywords: +3.5regression
nosy: +eryksun, paul.moore, steve.dower, tim.golden, zach.ware
priority: normal -> high
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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue25213>
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