gmane.comp.python.ipython.user

Re: Out problem

Thomas Kluyver — 2012-05-21T20:45:16

This was deliberately changed. If you call a function 10000 times, and
it has some return value that you're not interested in, you don't want
to see 'True' 10000 times. If you do want to see it, you can always
use an explicit print.

As far as I remember, you're the first person to remark on the
difference since it was changed for 0.11, so there probably isn't
enough interest to justify making it configurable. ;-)

Best wishes,
Thomas

Out problem

Adrian Klaver — 2012-05-21T20:34:43

I seem to be having a problem with Out not showing up in newer versions 
of ipython under certain conditions. It happens with  0.11+. Easiest to 
just show is as an example:

Python 2.7.3 (default, May  9 2012, 20:18:57)
IPython 0.12.1 -- An enhanced Interactive Python.
?         -> Introduction and overview of IPython's features.
%quickref -> Quick reference.
help      -> Python's own help system.
object?   -> Details about 'object', use 'object??' for extra details.

In [1]: l=[1,2,3]

In [2]: l[0]
Out[2]: 1

In [3]: for i in l:
     i
    ...:

In [4]: Out
Out[4]: {2: 1}


In previous versions iterating through a list would yield an Out:

Python 2.6.5 (r265:79063, Apr 16 2010, 13:09:56)
Type "copyright", "credits" or "license" for more information.

IPython 0.10 -- An enhanced Interactive Python.
?         -> Introduction and overview of IPython's features.
%quickref -> Quick reference.
help      -> Python's own help system.
object?   -> Details about 'object'. ?object also works, ?? prints more.

In [1]:

Re: ipython and python3

MinRK — 2012-05-21T17:35:54


As with all Python packages, you would need to install IPython for *both*
Python 2.7 and Python 3.2 (e.g. python3 -m easy_install ipython). IPython
scripts also follow the recommended pattern of having a '3' suffix, so you
would start IPython for Python 3 with `ipython3`.

-MinRK


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Re: ipython and python3

Thomas Kluyver — 2012-05-21T17:32:58

Hi Alan,

On 21 May 2012 18:18, Alan <alanwilter< at >gmail.com> wrote:

First, you need to make sure you have IPython installed for Python 3.
It looks like Fink doesn't yet have a package for IPython on Python 3
[1]. I'm sure they'd appreciate contributions (and feel free to point
the maintainers to this mailing list if they have questions). In the
meantime, you can download it from http://ipython.org/download.html
and install with python3 setup.py install.

Once you've done that, the command should be ipython3. The python3
profile is just a distraction - I initially wrote it to use a
different default profile on Python 3, but we later decided it wasn't
necessary and removed it.

Best wishes,
Thomas

[1] http://pdb.finkproject.org/pdb/browse.php?summary=ipython

ipython and python3

Alan — 2012-05-21T17:18:08

Hi there,

I am a Fink user on Mac OSX Lion and I have ipython 0.12, python 2.7 and
python 3.2 installed on my system.

I am wondering how can I use ipython with python3. Besides, what is
"ipython --profile=python3" since I still see:

Python 2.7.3 (default, Apr 19 2012, 10:52:47)
Type "copyright", "credits" or "license" for more information.

IPython 0.12.1 -- An enhanced Interactive Python.

?

Thanks,

Alan

fail to update edited script when using %run withinipython?

Chao YUE — 2012-05-20T20:59:41

Dear all,

I have a problem is that, I use %run script.py to run the script within
ipython (with %pdb on),
then I add one line of print something before the line where exception is
raised.
Then I use ctrl+d to exit debugger and use %run to run the script again, I
found the script in
traceback is updated but the print part is not executed. Then I have to log
out of current ipython session
and start ipython again and use %run command, the print part has been
executed.

Does anyone else see this problem and I guess there is some flag to update
the script?

thanks,

Chao

call function with set break point?

Chao YUE — 2012-05-20T18:38:17

Dear all,

Just a one line question:
I have %run -d b20 script.py to set the break point at line20 when run the
script. Is there a way I can do the similar when I call a function?

thanks,

Chao

Re: Using the IPython notebook architecture

Brian Granger — 2012-05-20T15:48:55

Its all in the Javascript stuff that you want.  In fact, we have a
branch that is about to be merged that will help in all of this.  It
basically puts all the needed code into a few javascript files that
you can use on any web page.  You will still need to run our custom
HTTP server for the server side of things, but it should work fine.  I
would check back in two weeks to see when that branch is merged into
master.

Cheers,

Brian

On Fri, May 18, 2012 at 1:08 PM, K Krish <neurotheory2012< at >gmail.com> wrote:

Re: create all variables that are inside function inipython

Chao YUE — 2012-05-19T20:32:11

2012/5/19 Thomas Kluyver <takowl< at >gmail.com>


Thanks Thomas. I tried to open %pdb one before I launch the code. it helps.

cheers,

Chao

Re: MacOSX import error pyside and pyqt

Rajeev Jain — 2012-05-19T20:26:43

All works now !
Rajeev



On Sat, May 19, 2012 at 2:11 PM, Rajeev Jain <rajeeja< at >gmail.com> wrote:

Re: MacOSX import error pyside and pyqt

Rajeev Jain — 2012-05-19T19:11:13

You are right, I have ipython using my system python, pyside and qt
are installed in /usr/bin. I cuprit is brew they don't have a formula
for ipython...

outputs are below:

/Users/rajeevjain
==> echo $PYTHONPATH
/usr/local/lib/python2.7/site-packages

/Users/rajeevjain
==> sudo pip install ipython --upgrade
Requirement already up-to-date: ipython in /Library/Python/2.7/site-packages

In [19]: from PySide import QtCore
---------------------------------------------------------------------------
ImportError                               Traceback (most recent call last)
/Users/rajeevjain/<ipython-input-19-c0454bed55e9> in <module>()
----> 1 from PySide import QtCore

ImportError: No module named PySide

In [20]: from PyQt4  import QtCore
---------------------------------------------------------------------------
ImportError                               Traceback (most recent call last)
/Users/rajeevjain/<ipython-input-20-2a9a307137f7> in <module>()
----> 1 from PyQt4  import QtCore

ImportError: No module nam

Re: MacOSX import error pyside and pyqt

Aaron Meurer — 2012-05-19T19:10:16


Based on the path in his last traceback, I'd say it's installed to the
system Python.

Aaron Meurer

Re: MacOSX import error pyside and pyqt

Thomas Kluyver — 2012-05-19T18:48:38

Hi again Rajeev,

On 19 May 2012 19:37, Rajeev Jain <rajeeja< at >gmail.com> wrote:

What do you see if you try:

from PySide import QtCore
from PyQt4  import QtCore

Is your IPython installed through macports, or using your macports
Python? If it's installed on, say, the Mac system version of Python,
it might not be able to see the libraries from macports unless you set
your PYTHONPATH.

Thomas

MacOSX import error pyside and pyqt

Rajeev Jain — 2012-05-19T18:37:42

This is on Mac OSX, I'm trying to do ipython qtconsole:-

/Users/rajeevjain
==> brew install PySide
Error: pyside-1.1.0 already installed

/Users/rajeevjain
==> brew install PyQt
Error: pyqt-4.9.1 already installed

/Users/rajeevjain
==> ipython
Python 2.7.1 (r271:86832, Jul 31 2011, 19:30:53)
Type "copyright", "credits" or "license" for more information.

IPython 0.12.1 -- An enhanced Interactive Python.
? -> Introduction and overview of IPython's features.
%quickref -> Quick reference.
help -> Python's own help system.
object? -> Details about 'object', use 'object??' for extra details.

In [1]: from IPython.external.qt import QtCore, QtGui
ImportError Traceback (most recent call last)
/Users/rajeevjain/ in ()
----> 1 from IPython.external.qt import QtCore, QtGui

/Library/Python/2.7/site-packages/IPython/external/qt.py in ()
40 QT_API = QT_API_PYQT
41 except ImportError:
---> 42 raise ImportError('Cannot import PySide >= 1.0.3 or PyQt4 >= 4.7')
43
44 elif QT_API == QT_API_PYQT:

ImportError: Cannot import

Re: create all variables that are inside function inipython

Thomas Kluyver — 2012-05-19T16:33:09

No, Python's scoping doesn't work like that. However, if the code you
want to debug throws an exception, you can call %debug to jump into
the debugger for that exception. Or use %pdb beforehand to go into the
debugger automatically for any exception.

Alternatively, if it's not throwing exceptions, or you want to examine
it earlier, you can use IPython.embed() to start IPython from inside a
function to inspect the variables. In that case, you should run the
code from outside IPython, otherwise it gets a bit confused.

Thomas

create all variables that are inside function inipython

Chao YUE — 2012-05-19T15:12:02

Dear all,

I am frustrated by debugging code now... Is there a way that when I call a
function, all the variables within the function will be created in current
ipython interactive session namespace
and then I can run the script in a way of %run -i myjob.py, if there is any
bug, I can print the most recent variable in the loop and check what's
going one, rather than modifying the code again
and again with try-except blocks or adding pdb.set_trace() here and there.
This might no be good practice but I think for not large amount of data,
it's a good way to debug.

thanks et cheers,

Chao

Using the IPython notebook architecture

K Krish — 2012-05-18T20:08:17

Hello IPython group,

I have some Python-based algorithms which I want to share with other
researchers via a webpage.
The users will able to run the algorithms on their uploaded data files, and
they can view the results in plots (displayed on the webpage) etc.
Since the IPython notebook interface already provides something that can do
this (and much more!), I was thinking of basically copying and modifying
the implementation for my webpage. I won't need an interactive shell as
most of the users won't be programmers and won't know Python -- the UI in
the webpage will using their settings and parameters to run the Python
scripts in the background.

Here's my question/request to the group ---
Note: My experience in web development is very very basic.

1) This seems like straightforward task, since most of the things I need
are already implemented in the notebook interface: the web server, calling
the IPython kernel from the webpage, plotting graphs in the webpage etc. Do
you recommend starting with the existing

Re: [SOLVED] Re: loading modules at startup?

Thomas Kluyver — 2012-05-18T10:01:45

%whos doesn't necessarily show everything in your namespace - I think
it hides things that are loaded at startup, so you can see what you've
defined manually. Can you access pa or sm?

Thomas

Re: ipython notebook doesn't launch browser "could not open file(notebook) for safe execution

robertking — 2012-05-18T09:50:46

Thankyou so much! It's working now. I just updated my version if IPython.

I must have had an old version of Ipython. Then today I installed pythonxy.


On Fri, May 18, 2012 at 9:36 PM, Matthias Bussonnier [via Python] <
ml-node+s6n4975039h75< at >n6.nabble.com> wrote:



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Re: ipython notebook doesn't launch browser "could not open file(notebook) for safe execution

Matthias Bussonnier — 2012-05-18T09:35:41

Apparently you are using 0.10.2 , only 0.12 and above have the notebook.
How did you install the last version ?
Did you try removing the old version ?

ipython notebook doesn't launch browser "could not open file(notebook) for safe execution

robertking — 2012-05-18T09:28:58

Launching notepad gives the error below, and opens ipython as usual, but not
the browser.

Microsoft Windows [Version 6.0.6002]
Copyright (c) 2006 Microsoft Corporation.  All rights reserved.

*C:\Windows\system32>ipython notebook
Could not open file <notebook> for safe execution.*
Python 2.7.2 (default, Jun 12 2011, 15:08:59) [MSC v.1500 32 bit (Intel)]
Type "copyright", "credits" or "license" for more information.

IPython 0.10.2 -- An enhanced Interactive Python.
?         -> Introduction and overview of IPython's features.
%quickref -> Quick reference.
help      -> Python's own help system.
object?   -> Details about 'object'. ?object also works, ?? prints more.

In [1]: import tornado, zmq

In [2]: tornado.version
Out[2]: '2.2.1'

In [3]: zmq.__version__
Out[3]: '2.2.0'

In [4]: import simplejson


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