Re: About some problem

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Date	Thu, 2 Jan 2014 13:07:46 -0500
Subject	Re: About some problem
From	David Hutto <dwightdhutto@gmail.com>
To	Rustom Mody <rustompmody@gmail.com>
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I think, but haven't tried, and this would be 2-3  from __future__ import


On Thu, Jan 2, 2014 at 12:46 PM, Rustom Mody <rustompmody@gmail.com> wrote:

> On Thu, Jan 2, 2014 at 11:06 PM, Ned Batchelder <ned@nedbatchelder.com>
> wrote:
> > On 1/2/14 12:05 PM, Rustom Mody wrote:
> >
> >>
> >> i'm not sure about this but isnt it normally the case that different
> >> version modules dont get mixed up like that?
> >> IOW if pytesser was a properly packaged 2.7 module would python 3 be
> >> able to get at it ??
> >>
> >
> > If you use a Python 3 installer it can succeed at installing a Python 2
> > package. Then you won't find out until you try to run the package that
> it is
> > incompatible.  A mechanism to prevent this seems like a good idea, but
> since
> > it wasn't in place at the dawn of Python 3, it would be difficult to put
> in
> > place now.
>
> $ python3
> Python 3.3.3 (default, Dec  8 2013, 16:34:29)
> [GCC 4.8.2] on linux
> Type "help", "copyright", "credits" or "license" for more information.
> >>> from sys import path
> >>> path
> ['', '/usr/lib/python3.3', '/usr/lib/python3.3/plat-i386-linux-gnu',
> '/usr/lib/python3.3/lib-dynload',
> '/usr/local/lib/python3.3/dist-packages',
> '/usr/lib/python3/dist-packages']
>
>
> $ python
> Python 2.7.6 (default, Dec  6 2013, 21:56:56)
> [GCC 4.8.2] on linux2
> Type "help", "copyright", "credits" or "license" for more information.
> >>> from sys import path
> >>> path
> ['', '/usr/local/lib/python2.7/dist-packages/pip-1.0-py2.7.egg',
> '/usr/lib/python2.7', '/usr/lib/python2.7/plat-i386-linux-gnu',
> '/usr/lib/python2.7/lib-tk', '/usr/lib/python2.7/lib-old',
> '/usr/lib/python2.7/lib-dynload',
> '/usr/local/lib/python2.7/dist-packages',
> '/usr/lib/python2.7/dist-packages',
> '/usr/lib/python2.7/dist-packages/PILcompat',
> '/usr/lib/python2.7/dist-packages/gst-0.10',
> '/usr/lib/python2.7/dist-packages/gtk-2.0',
> '/usr/lib/pymodules/python2.7',
> '/usr/lib/python2.7/dist-packages/wx-2.8-gtk2-unicode']
>
>
> So as far as I can see (on a debian linux system) the paths are
> clearly 2.7-prefixed or 3.3-prefixed.
>
> So apart from being stupid and/or malicious to munge sys.path to tread
> on the other python's toes...???
>
> Oh ok I get what you are saying: python3 will not recognize a python2
> package and install it seemingly correctly but actually wrongly
> --
> https://mail.python.org/mailman/listinfo/python-list
>



-- 
Best Regards,
David Hutto
*CEO:* *http://www.hitwebdevelopment.com <http://www.hitwebdevelopment.com>*

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Re: About some problem David Hutto <dwightdhutto@gmail.com> - 2014-01-02 13:07 -0500

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