Python-2.5.exe?

[Andrew Burton]

What Python is best for installing to a USB Drive? I've actually got
2.5 on a drive, but I forget which installation package I used. It
seems to me that it was an EXE file, but I cannot seem to find one of
those today.

Can the Python-2.5.msi installation files from python.org be installed
so as not to touch the registry, to make them portable?

--
Andrew Burton
tuglyraisin@aol .com
http://utilitarian.us - A Guide to Esoteric Technology in Paragon City
http://jarodrussell.livejournal.com/ - Take a guess. ;)

[Fredrik Lundh]

Re: Python-2.5.exe?

Andrew Burton wrote:

What Python is best for installing to a USB Drive? I've actually got
2.5 on a drive, but I forget which installation package I used. It
seems to me that it was an EXE file, but I cannot seem to find one of
those today.
>
Can the Python-2.5.msi installation files from python.org be installed
so as not to touch the registry, to make them portable?

python doesn't depend on the registry settings for normal use, so
you can simply install python as usual, copy python25.dll from
c:\windows\syst em32 to c:\python25, and then copy (or move) the
entire c:\python25 tree to your USB drive.

</F>

[Laurent Pointal]

Re: Python-2.5.exe?

Andrew Burton wrote:

What Python is best for installing to a USB Drive? I've actually got
2.5 on a drive, but I forget which installation package I used.

Maybe this one ? http://www.voidspace.org.uk/python/movpy/

It
seems to me that it was an EXE file, but I cannot seem to find one of
those today.
>
Can the Python-2.5.msi installation files from python.org be installed
so as not to touch the registry, to make them portable?

It seems movpy can install Python2.5 on an USB Key.

A+

Laurent.

[John Salerno]

Re: Python-2.5.exe?

Fredrik Lundh wrote:

python doesn't depend on the registry settings for normal use, so
you can simply install python as usual, copy python25.dll from
c:\windows\syst em32 to c:\python25, and then copy (or move) the
entire c:\python25 tree to your USB drive.

Is it safe to assume that if you do this, Python first looks in
C:\Python25 for the dll file, before trying to find the non-existent (on
the USB drive) C:\Windows\Syst em32?

Thanks.

[Fredrik Lundh]

Re: Python-2.5.exe?

John Salerno wrote:

>python doesn't depend on the registry settings for normal use, so
>you can simply install python as usual, copy python25.dll from
>c:\windows\sys tem32 to c:\python25, and then copy (or move) the
>entire c:\python25 tree to your USB drive.

>
Is it safe to assume that if you do this, Python first looks in
C:\Python25 for the dll file, before trying to find the non-existent (on
the USB drive) C:\Windows\Syst em32?

Python looks for a DLL in the same directory as the EXE before it looks
anywhere else (this is standard Windows behaviour).

</F>

[Martin v. Löwis]

Re: Python-2.5.exe?

John Salerno schrieb:

Is it safe to assume that if you do this, Python first looks in
C:\Python25 for the dll file, before trying to find the non-existent (on
the USB drive) C:\Windows\Syst em32?

python25.dll is found through mechanisms of the operating system, not
through code in Python. The operating system loads DLLs in the order
specified here:

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dllproc/base/dynamic-link_library_search_order.asp

As you can see, the directory containing the application is searched first.

Regards,
Martin

[Nick Craig-Wood]

Re: Python-2.5.exe?

Fredrik Lundh <fredrik@python ware.comwrote:

Andrew Burton wrote:
>

What Python is best for installing to a USB Drive? I've actually got
2.5 on a drive, but I forget which installation package I used. It
seems to me that it was an EXE file, but I cannot seem to find one of
those today.

Can the Python-2.5.msi installation files from python.org be installed
so as not to touch the registry, to make them portable?

>
python doesn't depend on the registry settings for normal use, so
you can simply install python as usual, copy python25.dll from
c:\windows\syst em32 to c:\python25, and then copy (or move) the
entire c:\python25 tree to your USB drive.

As well as the above, I find a little .bat file like this to set some
paths and start python or your application is helpful, eg

@echo off
set DEMOHOME=%CD%
set PYTHONHOME=%DEM OHOME%\Python24
set PYTHONPATH=%PYT HONHOME%;%DEMOH OME%\Demo\Pytho n
set PYTHON=%PYTHONH OME%\python.exe
set PYTHONW=%PYTHON HOME%\pythonw.e xe
set PATH=%PYTHONHOM E%;%PATH%
start "Demo" "%PYTHONW%" "demo.pyw"

--
Nick Craig-Wood <nick@craig-wood.com-- http://www.craig-wood.com/nick