Statistics...help with numpy/scipy install

[Rex Macey]

I'm new to Python with a new windows 8 machine (64-bit OS). Learning programming mainly for fun. Naturally I downloaded Python 3.3 (who doesn't wantthe latest and greatest). What I want involves functions related to the normal distribution. Based on my google research, it appears that SCIPY is agood way to go. That requires NUMPY. I don't seem to find an install that works for my environment which leads to the questions on this post: Is there an install for my environment and if so, where do I get it? If not, is there another package I should use? Or do I need to bite the bullet and install an earlier version of Python. Suggestions and comments appreciated. Thanks.

 

[Mark Lawrence]

I'm new to Python with a new windows 8 machine (64-bit OS). Learning programming mainly for fun. Naturally I downloaded Python 3.3 (who doesn't want the latest and greatest). What I want involves functions related to the normal distribution. Based on my google research, it appears that SCIPY is a good way to go. That requires NUMPY. I don't seem to find an install that works for my environment which leads to the questions on this post: Is there an install for my environment and if so, where do I get it? If not, is there another package I should use? Or do I need to bite the bullet and install an earlier version of Python. Suggestions and comments appreciated. Thanks.

So what exactly went wrong when you tried to install this
http://sourceforge.net/projects/numpy/files/NumPy/1.7.0/ using commands
that you haven't given us and got error messages that you also haven't
given us?

 

[Michael Torrie]

I'm new to Python with a new windows 8 machine (64-bit OS). Learning
programming mainly for fun. Naturally I downloaded Python 3.3 (who
doesn't want the latest and greatest). What I want involves
functions related to the normal distribution. Based on my google
research, it appears that SCIPY is a good way to go. That requires
NUMPY. I don't seem to find an install that works for my
environment which leads to the questions on this post: Is there an
install for my environment and if so, where do I get it? If not, is
there another package I should use? Or do I need to bite the bullet
and install an earlier version of Python. Suggestions and comments
appreciated. Thanks.

A casual google search seems to indicate that for now, SciPy and NumPy
are for Python 2.x (2.7 is the latest). I could be wrong though and
often am. I know a number of popular and useful packages are not yet
available on Python 3.

If you need to do a lot math stuff, there's a complete python system
that bundles a lot of these tools together into a nice package. It's
called Sage. http://www.sagemath.org/

There are several non-python packages out there that are really handy as
well:
- R - if you need to do statistics. http://www.r-project.org/
- Octave - a matlab-compatible language. http://www.gnu.org/software/octave/
- SciLab - a math package that has a nice gui. http://www.scilab.org

 

[Colin J. Williams]

I'm new to Python with a new windows 8 machine (64-bit OS). Learning programming mainly for fun. Naturally I downloaded Python 3.3 (who doesn't want the latest and greatest). What I want involves functions related to the normal distribution. Based on my google research, it appears that SCIPY is a good way to go. That requires NUMPY. I don't seem to find an install that works for my environment which leads to the questions on this post: Is there an install for my environment and if so, where do I get it? If not, is there another package I should use? Or do I need to bite the bullet and install an earlier version of Python. Suggestions and comments appreciated. Thanks.

Rex,

A good start for supplementary packages is PyPi, see:
http://en.wikipedia.org/wiki/Python_Package_Index

The packages in PyPi can be downloaded using easy-install, see:
http://en.wikipedia.org/wiki/EasyInstall

Yes, the Enthught Numpy is a good starting point.

Good luck and have fun,

Colin W

 

[David Robinow]

On 02/10/2013 10:35 AM, Rex Macey wrote:
A casual google search seems to indicate that for now, SciPy and NumPy
are for Python 2.x (2.7 is the latest). I could be wrong though and
often am. I know a number of popular and useful packages are not yet
available on Python 3.

My casual google search finds www.numpy.org as the first entry.
Clicking on the download link, one can find numpy 1.7.0 for Python 3.3
In all fairness, this was just released a few hours and is the first
official version supporting 3.3
However, numpy 1.6.2 did support 3.2
There's not yet a Scipy release supporting 3.3 so the OP may wish to
downgrade to Python3.2

If you need to do a lot math stuff, there's a complete python system
that bundles a lot of these tools together into a nice package. It's
called Sage. http://www.sagemath.org/

Sage doesn't run natively on Windows. Not necessarily a problem but
should be mentioned.

 

[Oscar Benjamin]

What functions did you want? The math module contains the error
function erf() and the random module can generate normally distributed
pseudo-random numbers, e.g.:

-0.2793532098124607

There should be. Why doesn't it work?

A casual google search seems to indicate that for now, SciPy and NumPy
are for Python 2.x (2.7 is the latest). I could be wrong though and
often am. I know a number of popular and useful packages are not yet
available on Python 3.

numpy and scipy are both available for Python 3. They have been for
some time and, on Ubuntu, can be installed from the OS repositories.
For Windows the OP should use the sourceforge download page.


Oscar

 

[Rex Macey]

The setup of numpy-1.7.0 leads to a Setup window with a message: "Python 3.3 is required for this package. Select installation to use:". Below that isan empty list box. Below that is an edit box for the Python Directory.

I have Python 3.3 installed on c:\Python33.

 

[Rex Macey]

The setup of numpy-1.7.0 leads to a Setup window with a message: "Python 3.3 is required for this package. Select installation to use:". Below that isan empty list box. Below that is an edit box for the Python Directory.

I have Python 3.3 installed on c:\Python33.

 

[Rex Macey]

I should have added that the setup gives an error window "Cannot install" "Python version 3.3 required, which was not found in the registry."

 

[Rex Macey]

I should have added that the setup gives an error window "Cannot install" "Python version 3.3 required, which was not found in the registry."

 

[Oscar Benjamin]

I should have added that the setup gives an error window "Cannot install" "Python version 3.3 required, which was not found in the registry."

Yes, you should have added this information. Are you sure that Python
3.3 is installed? Have you tried running it? e.g. when I run "python"
in my terminal I get:

oscar:~$ python
Python 2.7.3 (default, Sep 26 2012, 21:51:14)
[GCC 4.7.2] on linux2
Type "help", "copyright", "credits" or "license" for more information.

From within Python I can also query the version:

'2.7.3 (default, Sep 26 2012, 21:51:14) \n[GCC 4.7.2]'

Can you get similar output to confirm that Python 3.3 is installed?


Oscar

 

[David Robinow]

I should have added that the setup gives an error window "Cannot install" "Python version 3.3 required, which was not found in the registry."

I'm guessing that you installed a 64-bit python and are using a 32-bit numpy.

 

[Dennis Lee Bieber]

I'm guessing that you installed a 64-bit python and are using a 32-bit numpy.

Or they somehow found/built/installed a version of Python that did
not add itself to the Windows registry at all.

 

[Rex Macey]

I am sure I have python installed. I have been running it. in command line the window title is c:\python33\python.exe. The first line begins Python 3..3.0. Later in the line is the string "64 bit <AMD64>] on Win32".

Thus it appears I am trying to run a 32bit numpy with a 64bit python. (Seems like a big ole 64 bit python should be able to swallow a little 32 bittynumpy). Is there a 64bit numpy? If not why not? Can someone get on this? Seriously, I'm under the impression that I need the 64 bit python because I have a 64 bit OS.

 

[Terry Reedy]

I am sure I have python installed. I have been running it. in command
line the window title is c:\python33\python.exe. The first line
begins Python 3.3.0. Later in the line is the string "64 bit <AMD64>]
on Win32".

Thus it appears I am trying to run a 32bit numpy with a 64bit python.
(Seems like a big ole 64 bit python should be able to swallow a
little 32 bitty numpy). Is there a 64bit numpy? If not why not?

Ask the numpy people. I am surprised since a reason to be using 64
rather than 32 bit python is to have objects larger than 2 gigabytes and
memory larger than 4 gigabytes. Numerical/scientific programming is
relatively likely to need such.

someone get on this? Seriously, I'm under the impression that I need
the 64 bit python because I have a 64 bit OS.

If you look on your C: drive, you should have both 'Program Files' and
'Program Files (x86)' directories. The latter is for 32 bit programs.

 

[Dave Angel]

I am sure I have python installed. I have been running it. in command line the window title is c:\python33\python.exe. The first line begins Python 3.3.0. Later in the line is the string "64 bit <AMD64>] on Win32".

Thus it appears I am trying to run a 32bit numpy with a 64bit python. (Seems like a big ole 64 bit python should be able to swallow a little 32 bitty numpy). Is there a 64bit numpy? If not why not? Can someone get on this? Seriously, I'm under the impression that I need the 64 bit python because I have a 64 bit OS.

I can't answer the Numpy aspects, but I can tell you about 32bit versus
64bit.

A 32 bit OS can only handle 32 bit applications. It's conceivable to
build a 32bit OS that will load and run 64bit apps, but it's probably
impractical, and I don't know of anybody who has tried.

A 64bit OS can and does load both 32bit apps and 64bit apps. But once
it has loaded the app, the entire process has to be of the same
"bittedness". For Windows, that means any DLL's loaded from a 64bit
process have to be 64bit, and any DLL's loaded from a 32bit process must
be 32bit.

A python library may consist entirely of Python code, in which case it
would work for either 32bit or 64bit Python installation. But if the
library includes DLL's (which Numpy certainly would) then there have to
be separate versions of those DLL's.

Now, that library installation package may decide to include both sets
of DLL's, and just install the appropriate ones at installation time.
But that choice is entirely up to the library author.

 

[Oscar Benjamin]

I am sure I have python installed. I have been running it. in command
line the window title is c:\python33\python.exe. The first line
begins Python 3.3.0. Later in the line is the string "64 bit <AMD64>]
on Win32".

I don't know why you feel the need to paraphrase this information
rather than simply paste the interpreter message into the email. The
latter would be more useful for others trying to help understand your
problem.

Because numpy/scipy make extensive use of Python's underlying binary
interfaces. These are incompatible between 32 and 64 bit Python.

Ask the numpy people. I am surprised since a reason to be using 64 rather
than 32 bit python is to have objects larger than 2 gigabytes and memory
larger than 4 gigabytes. Numerical/scientific programming is relatively
likely to need such.

Yes but most people who are doing that sort of thing would just
compile their own numpy/scipy and probably wouldn't be using Windows
for the their main computations anyway. Numpy does work on 64 bit
Python but official binaries are not distributed via the sourceforge
page. Unofficial binaries are available here:
http://www.lfd.uci.edu/~gohlke/pythonlibs/#numpy

I don't know about Windows 8 but I've used 32 bit Python on 64 bit XP
no problem. My impression was that 64 bit Windows (unlike OSX and most
Linux distros) ships with 32 bit duplicates of all its libraries so
that it can run 32 bit applications without modification. My Windows
usage significantly predates Windows 8, though so this may have
changed some time ago.


Oscar