Python and Math

[Rustom Mody]

Yesterday, I spent one hour attemepting to install IPython
for Py3.3 (win 7), I failed. I do not even succeed to
understand how. Pip, setuptools, whl or manualy with from the
zip... completely lost. There is always something not working.

This morning I installed Py 3.4.1. I do not even
succeed to put it to work.

I know Python since v 1.5.6 !

I'm able to write "Numerical Recipes" in Python,
(I did it in Py2 and Py3), I'm unable to install
a piece of software (like Python) to work with.

So what're you waiting for?
Ask here and someone or other will help you get your system running.

 

[wxjmfauth]

Le lundi 19 mai 2014 18:09:24 UTC+2, Rustom Mody a écrit :

So what're you waiting for?

Ask here and someone or other will help you get your system running.

--------


You know. You are right. I can only agree. Just ask.
The problem I see, is why I only "succeded" to just find
on Google, so many people who are just asking...

 

[Tim Golden]

I realise that this probably isn't very helpful, but I've just
successfully installed ipython on Python 3.3 and Python 3.4 (Win7
32-bit) by simply doing:

py -3.3 -mpip install ipython

py -3.4 -mpip install ipython

Since I don't have the various c:\pythonxx\scripts folders on my path, I
did then have to launch it explictly:

c:\python33\scripts\ipython

but it was no harder than that.

What problems are you experiencing?

TJG

 

[Cameron Simpson]

Le lundi 19 mai 2014 18:09:24 UTC+2, Rustom Mody a écrit :

Yesterday, I spent one hour attemepting to install IPython
for Py3.3 (win 7), I failed. I do not even succeed to
understand how. Pip, setuptools, whl or manualy with from the
zip... completely lost. There is always something not working.

[...]

So what're you waiting for?
Ask here and someone or other will help you get your system running.

You know. You are right. I can only agree. Just ask.
The problem I see, is why I only "succeded" to just find
on Google, so many people who are just asking...

I have the same core skill: finding others with my question, not others with my
needed answer. That the SO can usually find others with the answer when I
cannot shows that there may be a mindset issue here.

Cheers,
Cameron Simpson <[email protected]>

Did microsoft take you today? Where do you want them to go?

 

[wxjmfauth]

Le lundi 19 mai 2014 21:18:54 UTC+2, Tim Golden a écrit :

I realise that this probably isn't very helpful, but I've just

successfully installed ipython on Python 3.3 and Python 3.4 (Win7

32-bit) by simply doing:



py -3.3 -mpip install ipython



py -3.4 -mpip install ipython



Since I don't have the various c:\pythonxx\scripts folders on my path, I

did then have to launch it explictly:



c:\python33\scripts\ipython



but it was no harder than that.

Sorry, but I'm even not able to understand how
to install pip!
Py3.3, why? because I already all the Qt derivative.

I found the pip manual, I do not get it! To install
pip: To install or upgrade pip, securely download get-pip.py.
Where? What should I do with it?



It seems you
have to
install

 

[Tim Golden]

Le lundi 19 mai 2014 21:18:54 UTC+2, Tim Golden a écrit :
Sorry, but I'm even not able to understand how to install pip! Py3.3,
why? because I already all the Qt derivative.

I found the pip manual, I do not get it! To install pip: To install
or upgrade pip, securely download get-pip.py. Where? What should I do
with it?

Ah, I understand. I thought you already had pip and just had
difficulties beyond that. Frankly, yes, bootstrapping pip on Windows can
be a bit frustrating. That's why 3.4 comes with a version pre-installed.
But you say you want to stay with 3.3.

If it's possible, download get-pip.py from here:

https://bootstrap.pypa.io/get-pip.py

(linked from here: http://pip.readthedocs.org/en/latest/installing.html)

using wget, curl, File Save As, python requests, urllib.urlretrieve or
whatever other method you choose.

And then run the get-pip.py program with the version of Python for which
you wish to install pip. eg,

c:\python33\python.exe get-pip.py

That will download the current versions of everything needed and will
put various flavours of pip.exe into c:\python33\scripts. As I mentioned
before, I've tended not to have the scripts directory on my path, and
you can instead do:

py -3.3 -mpip install ....


I think some people have put together .msi/.exe installers for this but
I can't point to any one in particular.

TJG

 

[Rustom Mody]

If it's possible, download get-pip.py from here:

https://bootstrap.pypa.io/get-pip.py

Gives me secure connection failed error (in firefox)

 

[Tim Golden]

Gives me secure connection failed error (in firefox)

I've reported on the PyPA issues list for pip:

https://github.com/pypa/pip/issues/1823

but, as you can see from that report, I was only able to get a failure
in one circumstance. I can successfully download via FF29, IE11 & chrome
whatever, all on Win7.

TJG

 

[Frank Millman]

I've reported on the PyPA issues list for pip:

https://github.com/pypa/pip/issues/1823

but, as you can see from that report, I was only able to get a failure
in one circumstance. I can successfully download via FF29, IE11 & chrome
whatever, all on Win7.

I have never managed to install pip before (not that I have tried very hard)
but following
your instructions I seemed to have installed it successfully, using Windows
Server 2003,
IE8, and python 3.3.

I used it to install IPython, with the following results.

First I ran 'pip install ipython', which worked.

Then I read the IPython docs, which gave the following command to install
Notebook -
'pip install ipython[notebook]'

That seemed to work, but when I ran 'ipython notebook' it failed on 'import
pyzmq'.

I ran 'pip install pyzmq', tried again, and it failed on 'import jinja2'.

I used pip to install that, then it failed on 'import tornado'.

I used pip to install that, and now it seems to be working.

Now I understand why 'pip' is so popular - despite the above hiccups, it
felt very smooth.

Thanks for the instructions, Tim - much appreciated.

Frank Millman

 

[wxjmfauth]

Le mardi 20 mai 2014 12:13:45 UTC+2, Tim Golden a écrit :

 

[Rustom Mody]

I've reported on the PyPA issues list for pip:

https://github.com/pypa/pip/issues/1823
Thanks




but, as you can see from that report, I was only able to get a failure

in one circumstance. I can successfully download via FF29, IE11 & chrome

whatever, all on Win7.

Seems to be working for me also (now).

[Without claiming any understanding]...

I dont know what wget has to do with it (in the bug report)
I just opened it in firefox: Earlier it didn't work now its working

 

[Rustom Mody]

I give up.
Anyway, thanks.

Take a deep breath.
Be patient.
And post the backtrace (or whatever is the evidence of 'not working')

 

[Dennis Lee Bieber]

linear algebra, expanding and factoring equations of all degrees.
Geometry.

Without significant add-in libraries, probably not...

"Expanding and factoring equations" -- to me -- implies /symbolic
algebra systems/.

Python can compute results of equations, but it won't, natively,
reformulate equations.

Linear algebra tends to turn into matrix manipulation, as I recall...
Again, not a native feature.

 

[Tony the Tiger]

linear algebra, expanding and factoring equations of all degrees.
Geometry.

Sounds to me like you really want something like Maple, Mathematica, or
similar. Try http://www.scilab.org/

Can do heaps of stuff, too. For free.


/Grrr

 

[Robert Kern]

Sounds to me like you really want something like Maple, Mathematica, or
similar. Try http://www.scilab.org/

Can do heaps of stuff, too. For free.

And with Python!

http://sagemath.org/

--
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
that is made terrible by our own mad attempt to interpret it as though it had
an underlying truth."
-- Umberto Eco

 

[Robert Kern]

Without significant add-in libraries, probably not...

"Expanding and factoring equations" -- to me -- implies /symbolic
algebra systems/.

Python can compute results of equations, but it won't, natively,
reformulate equations.

Linear algebra tends to turn into matrix manipulation, as I recall...
Again, not a native feature.

But all easily available with well-established open source packages. Just
because it's not in the standard library doesn't mean that Python isn't a
suitable language for doing this stuff.

--
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
that is made terrible by our own mad attempt to interpret it as though it had
an underlying truth."
-- Umberto Eco

 

[chris.barker]

I used it to install IPython, with the following results.

First I ran 'pip install ipython', which worked.

Then I read the IPython docs, which gave the following command to install

Notebook -

'pip install ipython[notebook]'

the reason for this is that the notebook has additional dependencies beyond what "plain" ipython requires. adding the [notebook] is supposed to bring those in, but apparetnly did not.

So this is either a bug, or maybe the problem is that you had already installed ipython, so when you did :
'pip install ipython[notebook]'

pip looked and saw that you already had it, so did nothing -- what did it report? In this caes:

'pip install -U ipython[notebook]'

might have worked: -U means upgrade even if I already have it.

But I"m glad the rest of the pip installs worked, that's pretty new actually!

Note that the "scipy stack" and particularly extra add-on stuff like 3-d visualization, etc, is very hard to build and install -- so a number of folks rely on "distributions" that give you all that in one pile:

Enthought Canopy
Continuum Anaconda

are two such options.

Very odd that pip being hard to figure out might send someone to MS C#:

Is there really a point and clic, out of the box high level interactive computational environment that MS delivers for C# ;-)

Not that we don't need the installation of packages made even easier, but really!

-Chris

 

[wxjmfauth]

Le jeudi 22 mai 2014 01:14:29 UTC+2, (e-mail address removed) a écrit :

I used it to install IPython, with the following results.
First I ran 'pip install ipython', which worked.
Then I read the IPython docs, which gave the following command to install
Notebook -
'pip install ipython[notebook]'

the reason for this is that the notebook has additional dependencies beyond what "plain" ipython requires. adding the [notebook] is supposed to bring those in, but apparetnly did not.



So this is either a bug, or maybe the problem is that you had already installed ipython, so when you did :

'pip install ipython[notebook]'



pip looked and saw that you already had it, so did nothing -- what did itreport? In this caes:



'pip install -U ipython[notebook]'



might have worked: -U means upgrade even if I already have it.



But I"m glad the rest of the pip installs worked, that's pretty new actually!



Note that the "scipy stack" and particularly extra add-on stuff like 3-d visualization, etc, is very hard to build and install -- so a number of folks rely on "distributions" that give you all that in one pile:



Enthought Canopy

Continuum Anaconda



are two such options.



Very odd that pip being hard to figure out might send someone to MS C#:



Is there really a point and clic, out of the box high level interactive computational environment that MS delivers for C# ;-)



Not that we don't need the installation of packages made even easier, butreally!

=========
=========

Hi Chris, do you remember me? Look at the adress wxjm...

I wanted to test wxPhoenix. Unable to install it, whl...?

If you do not need tester(s) (and a little bit more) put it
it clearly in the wxPython front page.

I just type

"wx python wxphoenix download" in google.

Results, first entry:

Can someone tell me how to download wxPython Phoenix ...

jmf

PS The latest version of wxPython I tested fails due to
the coding of characters, you should not be suprised,
and you probably remember how many times I tried to
explain it.

 

[Frank Millman]

pip looked and saw that you already had it, so did nothing -- what did it
report? In this caes:

'pip install -U ipython[notebook]'

might have worked: -U means upgrade even if I already have it.

Indeed it did - thanks for the tip.

I used pip to uninstall jinja2. Afterwards, running 'ipython notebook'
predictably failed.

Then I ran the above command to upgrade ipython notebook. It figured out
that jinja2 was missing and re-installed it. Now it works again.

Very smooth.

Frank