Installing SetupTools on 64-bit Windows

Question

I m running Python 2 7 on Windows 7 64-bit  and when I run the installer for setuptools it tells me that Python 2 7 is not installed   The specific error message is    Python Version 2 7 required which was not found in the registry    My installed version of Python is    Python 2 7  r27 82525  Jul  4 2010  07 43 08   MSC v 1500 64 bit  AMD64   on win32    I m looking at the setuptools site and it doesn t mention any installers for 64-bit Windows   Have I missed something or do I have to install this from source

User · Answer

Create a file named python2 7 reg  registry file  and put this content into it   Windows Registry Editor Version 5 00   HKEY LOCAL MACHINE SOFTWARE Wow6432Node Python PythonCore 2 7    HKEY LOCAL MACHINE SOFTWARE Wow6432Node Python PythonCore 2 7 Help    HKEY LOCAL MACHINE SOFTWARE Wow6432Node Python PythonCore 2 7 Help MainPythonDocumentation     C   Python27  Doc  python26 chm    HKEY LOCAL MACHINE SOFTWARE Wow6432Node Python PythonCore 2 7 InstallPath     C   Python27      HKEY LOCAL MACHINE SOFTWARE Wow6432Node Python PythonCore 2 7 InstallPath InstallGroup     Python 2 7    HKEY LOCAL MACHINE SOFTWARE Wow6432Node Python PythonCore 2 7 Modules    HKEY LOCAL MACHINE SOFTWARE Wow6432Node Python PythonCore 2 7 PythonPath     C   Python27  Lib C   Python27  DLLs C   Python27  Lib  lib-tk    And make sure every path is right   Then run  merge  it and done

User · Answer

Problem  you have 64-bit Python  and a 32-bit installer  This will cause problems for extension modules    The reasons why the installer doesn t finds Python is the transparent 32-bit emulation from Windows 7  64-bit and 32-bit programs will write to different parts of the Windows registry   64-bit  HKLM HKCU SOFTWARE   32-bit  HKLM HKCU SOFTWARE wow6432node    This means that the 64-bit Python installer writes to HKLM SOFTWARE Python  but the 32-bit setuptools installer looks at HKLM SOFTWARE wow6432node Python  this is handled by windows automatically  programs don t notice   This is expected behavior and not a bug   Usually  you have these choices    the  clean  way  use 32-bit Python if you have to use 32-bit modules or extensions the other  clean  way  only use 64-bit installers when using 64-bit Python  see below  what the answer above suggests  copy HKLM SOFTWARE Python to HKLM SOFTWARE wow6432node Python  but this will cause problems with binary distributions  as 64-bit Python can t load 32-bit compiled modules  do NOT do this   install pure Python modules with setuptools instead of the distutils installer  easy install or pip    For setuptools itself  for example  you can t use a 32-bit installer for 64-bit Python as it includes binary files  But there s a 64-bit installer at http   www lfd uci edu  gohlke pythonlibs   has many installers for other modules too   Nowadays  many packages on PyPi have binary distributions  so you can install them via pip

User · Answer

I made a registry   reg  file that will automatically change the registry for you  It works if it s installed in  C  Python27    Download 32-bit version HKEY LOCAL MACHINE HKEY CURRENT USER SOFTWARE wow6432node   Download 64-bit version HKEY LOCAL MACHINE HKEY CURRENT USER SOFTWARE

User · Answer

Yes  you are correct  the issue is with 64-bit Python and 32-bit installer for setuptools   The best way to get 64-bit setuptools installed on Windows is to download ez setup py to C  Python27 Scripts and run it  It will download appropriate 64-bit  egg file for setuptools and install it for you   Source  http   pypi python org pypi setuptools  P S  I d recommend against using 3rd party 64-bit  exe setuptools installers or manipulating registry

User · Answer

Here is a link to another post thread  I was able run this script to automate registration of Python 2 7   Make sure to run it from the Python 2 x  exe you want to register    To register Python 3 x I had to modify the print syntax and import winreg  instead of  winreg   then run the Python 3  exe   https   stackoverflow com a 29633714 3568893

User · Answer

To allow Windows installers to find the installed Python directory in Windows nbsp 7  OR  change which Python installation to install an installer into  add the installed path into the InstallPath registry key s  Default  value      HKEY LOCAL MACHINE SOFTWARE Wow6432Node Python PythonCore 2 X InstallPath   Where  X  is the Python version  that is  2 5  2 6  or 2 7

User · Answer

You can find 64bit installers for a lot of libs here  http   www lfd uci edu  gohlke pythonlibs

User · Answer

Apparently  having faced related 64- and 32-bit issues on OS X  there is a bug in the Windows installer  I stumbled across this workaround  which might help - basically  you create your own registry value HKEY LOCAL MACHINE SOFTWARE Wow6432Node Python PythonCore 2 6 InstallPath and copy over the InstallPath value from HKEY LOCAL MACHINE SOFTWARE Python PythonCore 2 6 InstallPath  See the answer below for more details   If you do this  beware that setuptools may only install 32-bit libraries   NOTE  the responses below offer more detail  so please read them too

User · Answer

For 64-bit Python on Windows download ez setup py and run it  it will download the appropriate  egg file and install it for you   At the time of writing the  exe installer does not support 64-bit versions of Python for Windows  due to a distutils installer compatibility issue

User · Answer

Get the file register py from this gist  Save it on your C drive or D drive  go to CMD to run it with    python register py    Then you will be able to install it

User · Answer

I tried the above and adding the registry keys to the LOCALMACHINE was not getting the job done  So in case you are still stuck   try this      Windows Registry Editor Version 5 00       HKEY CURRENT USER SOFTWARE Python        HKEY CURRENT USER SOFTWARE Python PythonCore        HKEY CURRENT USER SOFTWARE Python PythonCore 2 7        HKEY CURRENT USER SOFTWARE Python PythonCore 2 7 Help        HKEY CURRENT USER SOFTWARE Python PythonCore 2 7 Help Main Python Documentation       C  Python27 Doc python272 chm        HKEY CURRENT USER SOFTWARE Python PythonCore 2 7 InstallPath       C  Python27         HKEY CURRENT USER SOFTWARE Python PythonCore 2 7 InstallPath InstallGroup       Python 2 7        HKEY CURRENT USER SOFTWARE Python PythonCore 2 7 Modules        HKEY CURRENT USER SOFTWARE Python PythonCore 2 7 PythonPath       C  Python27 Lib C  Python27 DLLs C  Python27 Lib lib-tk    Copy paste the above in notepad and save it as Python27 reg   Now run merge the file as mentioned in the answers above   Make sure the paths of Python installation are corrected as per your installation   It simply does  what the above answers suggest for a local machine  to the current user

[python] Installing SetupTools on 64-bit Windows

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