I am not able to setup pydb2 ! Any help !

[vj]

When I run the setup.py script , it throws an error

Traceback (most recent call last):
  File "C:\vijay\db2\utils\PyDB2-1.1.0-2.tar\PyDB2-1.1.0\setup.py",
line 57, in -toplevel-
libraries=[ db2lib ],
  File "C:\Python24\lib\distutils\core.py", line 137, in setup
raise SystemExit, gen_usage(dist.script_name) + "\nerror: %s" % msg
SystemExit: usage: setup.py [global_opts] cmd1 [cmd1_opts] [cmd2
[cmd2_opts] ...]
   or: setup.py --help [cmd1 cmd2 ...]
   or: setup.py --help-commands
   or: setup.py cmd --help

error: no commands supplied
>>>

Please let me know , what should have been the issue.

Thanks in advance.

Vj

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Re: I am not able to setup pydb2 ! Any help !

[vj]

I am new to Python . Please let me where should I issue the command
"setup.py install".

I have been using the IDLE to run Python scripts.

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Re: I am not able to setup pydb2 ! Any help !

[vj]

Unfortunately I get another error

Your DB2 root is: C:\Program Files\IBM\SQLLIB\
running install
running build
running build_py
creating build
creating build\lib.win32-2.4
copying DB2.py -> build\lib.win32-2.4
running build_ext
error: The .NET Framework SDK needs to be installed before building
extensions f
or Python.

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The .NET Framework SDK needs to be installed before building

[vj]

I have installed the .NET Framework SDK 1.1.
Yet I recieve this error message when I install PYDB2.

Could you please pour in your suggestions .
Thanks.

Vj.

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Re: recommended general-purpose string template packages?

[vj]

I use preppy from reportlab:

http://www.reportlab.org/preppy.html

It's one file, is fast and can be easily embedded in any application.

Vineet

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Re: wing ide vs. komodo?

[vj]

I've tried both and find WingIDE much faster than Komodo and the layout
is very well thought out. I love the way you can collapse all the
differnet panes with a few keystrokes. I also like their autocomplete
functionality.

Wing is developed by a small company, focussed on python development,
while komodo supports all the major scripting languages. 

VJ

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Re: wing ide vs. komodo?

[vj]

Forgot to mention WING's file search and replace is pretty cool and
powerful. It keeps checking changes in a different thread. If you want
to change yyy in say 100 files you would:

1. specify yyy in the search window
2. A list of files get displayed with matching yyy
3. As you fix replace yyy in the files the list of files with matching
yyy reduces automatically. This is very cool and very useful.

Another thing I like about WING is that it warns you if you have tabs
ans spaces mixed in a file.

The embedded python shell is also a useful feature.

VJ

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Re: ANN: PyQt v4.1 Released

[vj]

> Riverbank Computing is pleased to announce the release of PyQt v4.1
> available from http://www.riverbankcomputing.co.uk/pyqt/.

What's the best way to learn pyqt. Do the examples from the book GUI
Programming with Python: QT Edition still work? Is the material from
the book mostly valid or have things changed quite a bit?

http://www.commandprompt.com/community/pyqt/

Vineet

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Has anyone generated Open Office Calc XML files from python

[vj]

I have a program which generates xml files for excel but these files
are not recognized by open office calc. I looked at the OO uno library,
but it seems like an over kill.

In my experience, for simpler documents, it is much faster to directly
write to underlying XML format. Has anyone done this? Any idea on the
XML format used by Open Office Calc?

VJ

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Re: Has anyone generated Open Office Calc XML files from python

[vj]

I just found something in perl:

http://tools.openoffice.org/profiling/pod/LogFile/XML.html

Will try and reverse engineer this, unless something like this exists
in python. 

VJ

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Re: Has anyone generated Open Office Calc XML files from python

[vj]

>  http://ooopy.sourceforge.net/

I downloaded the package. unfortunately there are no examples that come
with. I found another python package which is more geared to creating
simple calc objects from python at. Apparently it is a port of the perl
library.

http://sourceforge.net/project/showfiles.php?group_id=87437

Here is one of the examples from the library. Seems pretty simple and
exactly what I was looking for:

---
import ooolib

# Create your document
doc = ooolib.Calc()

# Set values.  The values are set in column, row order, but the values
are
# not in the traditional "A5" style format.  Instead we require two
integers.
# set_cell_value(col, row, datatype, value)
for row in range(1, 9):
for col in range(1, 9):
doc.set_cell_value(col, row, "float", col * row)

# Save the document to the file you want to create
doc.save("calc-example01.ods")

-------
VJ

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Re: Has anyone generated Open Office Calc XML files from python

[vj]

> Isn't generating CSV output suitable to your needs?
> Python's CSV module makes that very simple - unless you want to include
> images, etc. in the XLS file?

You cannot create multiple worksheets using this method, or apply any
other form of formatting. 

VJ

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Anynoe have any examples on how to use python with paypal?

[vj]

I looked all over the web and can't seem to find any examples. Surely
someone must be using python to access the paypal SDK. I found this
link for ruby  (which was helpful), but python code would be better:

http://www.jeremyhubert.com/2006/7/7/using-paypal-website-payments-pro-with-ruby-on-rails

Any examples would be greatly appreciated. 

VJ

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os.mkdir and mode

[vj]

How do I do the following unix command:

mkdir -m770 test

with the os.mkdir command. Using os.mkdir(mode=0770) ends with the
incorrect permissions. 

Thanks,

VJ

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Re: os.mkdir and mode

[vj]

> To fix your problem, reset your umask thus :-

Thanks for the detailed reply. Your fix works like a charm. 

VJ

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I'm looking to learn pyqt

[vj]

Is there a a tutorial or a sample application I can start with (that
works with qt4 and pyqt4)?

Thanks,

VJ

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Help needed with translating perl to python

[vj]

I have a perl script which connect to network stream using sockets.
The scripts first logins in to the server and then parses the data
comming from the socket.

Statement 1:
  my $today = sprintf("%4s%02s%02s", [localtime()]->[5]+1900,
[localtime()]->[4]+1, [localtime()]->[3]) ;


Statement 2:
  my $password = md5_hex("$today$username") ;

Statement group 3:

$msglen = bcdlen(length($msg)) ;

sub bcdlen {
  my $strlen = sprintf("%04s", shift) ;
  my $firstval = substr($strlen, 2, 1)*16 + substr($strlen, 3, 1) ;
  my $lastval  = substr($strlen, 0, 1)*16 + substr($strlen, 1, 1) ;
  return chr($firstval) . chr($lastval) ;
}

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Re: Help needed with translating perl to python

[vj]

I posted too soon:

> Statement 1:
>   my $today = sprintf("%4s%02s%02s", [localtime()]->[5]+1900,
> [localtime()]->[4]+1, [localtime()]->[3]) ;

1. is localtime the same as time in python?
2. What does -> ? do in perl?
3. What is 'my'

> Statement 2:
>   my $password = md5_hex("$today$username") ;

is md5_hex the same as md5.new(key).hexdigest() in python?

> $msglen = bcdlen(length($msg)) ;

1. here the funciton is being called with the length of variable msg.
However the function def below does not have any args

> sub bcdlen {
>   my $strlen = sprintf("%04s", shift) ;
>   my $firstval = substr($strlen, 2, 1)*16 + substr($strlen, 3, 1) ;
>   my $lastval  = substr($strlen, 0, 1)*16 + substr($strlen, 1, 1) ;
>   return chr($firstval) . chr($lastval) ;
>
> }

2. What does shift do above?
3. is the '.' operator just + in python?

Thanks,

Vineet



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Questions on migrating from Numeric/Scipy to Numpy

[vj]

I've tried to post this to the numpy google group but it seems to be
down. My migration seems to be going well. I currently have one issue
with using scipy_base.insert.

>>> a = zeros(5)
>>> mask = zeros(5)
>>> mask[1] = 1
>>> c = zeros(1)
>>> c[0] = 100
>>> numpy.insert(a, mask, c)
array([ 100.,0.,  100.,  100.,  100.,0.,0.,0.,
0.,0.])
>>> a
array([ 0.,  0.,  0.,  0.,  0.])
>>> b
array([0, 0, 0, 0, 0, 0, 0, 0, 0, 1], dtype=int8)
>>> mask
array([ 0.,  1.,  0.,  0.,  0.])
>>> c
array([ 100.])

I would have expected numpy.insert to update a so that the second
element in a would be 100.

Thanks,

VJ

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Re: Questions on migrating from Numeric/Scipy to Numpy

[vj]

> It is just a redirection to the [EMAIL PROTECTED] list. If you just
> tried in the past hour or so, I've discovered that our DNS appears to be down
> right now.

I tried registering the twice the last couple of days and never got an
email back.

> No, that's not what insert() does. See the docstring:

Then this behavior is different from the scipy_base.insert

> In [7]: a[mask] = 100

What I needed was

a[mask] = array_of_values

I just tried it and  it works.

Thanks,

VJ

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Re: Questions on migrating from Numeric/Scipy to Numpy

[vj]

> Note that the mask needs to be a bool array.

>>> mask = zeros(5)
>>> mask = zeros(5, numpy.int8)
>>> mask[1] = True
>>> mask[2] = True
>>> a = zeros(5)
>>> a[mask] = [100, 200]
>>> a
array([ 100.,  100.,0.,0.,0.])

I found this strange. It should just give an error if you try to use a
mask array of non booleans. It's working great so far.

Thanks for all the hard work.

VJ

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Re: Questions on migrating from Numeric/Scipy to Numpy

[vj]

What should I be using to replace Numeric/arrayobject.h:

numpy/arrayobject.h

or

numpy/oldnumeric.h

Thanks,

VJ

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Does anyone have the db_row module compiled for python 2.4 on windows?

[vj]

Would really appreciate the binary files for the db_row.

Thanks,

VJ

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Re: ANN: IbPy 0.7.0-9.00 - Interactive Brokers Python API

[vj]

Cool. Why is python 2.5 required, will it not work with python 2.4?

VJ

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Need help with python one liners which will not be caught by signal.alarm

[vj]

I'm trying to create a semi restricted env where users are not able to
bring my application down. I know the following:

1**1000

will not be caught by signal.alarm since it is executed in c code. Are
there other examples?
Will [100]*100 be cought by signal.alarm?

Thanks,

VJ

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Re: Pyrex installation on windows XP: step-by-step guide

[vj]

Can you use the stock python build or do you have to build python from
scratch with mingw to use pyrex modules built with mingw?

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Re: PyLint 0.11 / astng 0.16

[vj]

Are there any plans to release pylint under the LGPL license?

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Re: PyLint 0.11 / astng 0.16

[vj]

It does. In my case I'm thinking of embedding pylint to check user
scripts which are written in python.

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Re: lipo: can't figure out the architecture type of

[VJ]

On Mar 19, 4:48 pm, Vijayendra Bapte 
wrote:
> Hi,
>
> I am getting an gcc compilation error while installing FSEvents
> (http://pypi.python.org/packages/source/p/pyobjc-framework-FSEvents/
> pyobjc-framework-FSEvents-2.2b1.tar.gz) package on my Mac (OS X
> 10.4.11, Intel Core Duo 32 bit processor, Python2.6.1, gcc: i686-apple-
> darwin8-gcc-4.0.1)
>
> gcc failed while building the "FSEvents._callbacks" extension on $
> python setup.py install
>
> here is the error trace...
>
> running install_lib
> running build_py
> running build_ext
> building 'FSEvents._callbacks' extension
> gcc -arch ppc -arch i386 -isysroot /Developer/SDKs/MacOSX10.4u.sdk -
> fno-strict-aliasing -fno-common -dynamic -DNDEBUG -g -O3 -I/Library/
> Frameworks/Python.framework/Versions/2.6/include/python2.6 -c Modules/
> _callbacks.m -o build/temp.macosx-10.3-i386-2.6/Modules/_callbacks.o -
> O0
> Modules/_callbacks.m:60: error: parse error before
> 'm_python_context_template'
> Modules/_callbacks.m:62: warning: excess elements in scalar
> initializer
> Modules/_callbacks.m:62: warning: (near initialization for
> 'm_python_context_template')
> Modules/_callbacks.m:63: warning: excess elements in scalar
> initializer
> .
> .
> .
> .
> (Error ending with)
> Modules/_callbacks.m:133: error: previous definition of 'result' was
> here
> Modules/_callbacks.m:353: error: parse error before 'FSEventStreamRef'
> lipo: can't figure out the architecture type of: /var/tmp//
> cco6kalc.out
> error: command 'gcc' failed with exit status 1
>
> Could someone help me in solving this compilation error?

Finally after doing lots of search on google, I found that there is no
support of FSEvents for Tiger. It wraps some API's that aren't
available on Tiger systems.

Alternatives:

(1) Using kqueue/kevent: It might be possible to emulate the behavior
using kevent/kqueue. But the problem here is, it does not provide the
granularity as FSEvents i.e I you cannot detect which file is modified/
added/deleted inside the marked directory.

(2) The other alternative is polling for changes.
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File Permissions

[VJ]

Hi All

I need to get the user permission of a file using python. I was trying
the following code which i found on google grups

 st = os.stat(myfile)
mode = st[stat.ST_MODE]
if mode & stat.ST_IREAD:
print "readable"
if mode & stat.ST_IWRITE:
print "writable"
if mode & stat.ST_IEXEC:
print "executable"

I am getting a error saying

" Traceback (most recent call last):
  File "./test.py", line 23, in ?
if mode & stat.ST_IREAD:
AttributeError: 'module' object has no attribute 'ST_IREAD' "

any idea how to resolve this error ??

Basically i want to write into a file .If the permissions are not there
then print a error message.
How do i achive this ???

Thanks,
VJ

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Need help with restricting number of new objects a user script can create

[vj]

I'm building a large infrastructure with about 30 servers (all running
linux). I allow my end users to write scripts which then get broken
down in smaller parts and run across the 30 servers. The results from
each individual run are combined and presented back to the user.

I'm currently using pylint to restrict access to many things and make
the code a little more 'safe'. (I understand that it is very
difficult, if not impossible, to make the code completely secure).
The problem I'm facing now is:

how do I restrict the user from (inadvertently or maliciously) creating
a large number of objects which will bring down the entire 100 nodes.

Some of the things which I have ruled out (due to application
architecture):
1. Running each process in its own unix process.

Current Options:
1. expose my own version of range and xrange
2. Have a sandbox where the user script is run on random data before
being pushed out to the all the servers.

Questions:
1. How can I restrict recursion for the user scripts?
2. How can I restrict list comprehension in the user script? How do I
disable user from doing [1]*10
4. Can I move the user scripting to some other language which can be
interfaced with python yet allow the "restricted" execution env.
4. Can I convert the user functions using some 'modified' variant of
pyrex which will give me more control?

Have other people faced similar problems? I would imagine this is a
common problem for anyone building distributed systems?

Python 3000:
Going forward this would be a really useful thing to see in python 3000
where a restricted exec env should be built in to the language from the
ground up.

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Re: Need help with restricting number of new objects a user script can create

[vj]

I think the only option is to come up with my own mini language.
Searching on google, I found several examples where people replaced
python with lua for scripting. Am reading up on lua and looks very
promissing. I also tried doing the following:

for i=1,1 do print(i) end

on:
http://doris.sourceforge.net/lua/weblua.php

and got the following error:

Lua script:

for i=1,1 do print(i) end

Run using lua generates:

Fatal error:  Allowed memory size of 8388608 bytes exhausted (tried to
allocate 35 bytes) in /home/groups/d/do/doris/htdocs/lua/weblua.php on
line 109

Very cool. I need to now find out if this error is being caught by the
lua script or the underlying os. There also seems to be a 2-way
lua-python bridge converted which will allow me to embed lua in my
applciation.

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How to find out the next Friday using RelativeDateTime

[vj]

I'm doing:

a = now()
delta = ReltaiveDateTime(days=+6, weekday(mx.DateTime.Friday, 0))
Next Friday: a+delta

a: march 23
a+delta: Gives me March 31st and not March 24th

Any ideas?

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Re: How to find out the next Friday using RelativeDateTime

[vj]

I figured out how to do it. This does not work:

delta = ReltaiveDateTime(days=0, weekday(mx.DateTime.Friday, 0))

But this works:

delta = ReltaiveDateTime(days=+0, weekday(mx.DateTime.Friday, 0))

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Re: How to find out the next Friday using RelativeDateTime

[vj]

Thanks for pointing out that the days=+0 is not necessary. Your other
points are well noted.

Thanks

VJ

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What's the best way to learn perl for a python programmer?

[vj]

I've been given a project which requires writing scripts that need to
be run on over 3000 servers. Only about 15% of them have python
installed on them. While all/most of them will have perl.

I'll try and do as much as possible in pexpect but am sure I'll have do
some significant perl. Any suggestions on what is the best way to get
upto speed on perl?

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how to use ez_setup on a machine which does not have access to the internet

[vj]

I did the following:

1. Downloaded ez_setup.py
2. Downloaded the setuptools-0.6a10-py2.4.egg
3. Downloaded the pysqlite-2.0.6-py2.4-linux-i686(2).egg

Transferred all the files to the computer which is behind a firewall
(with no access to the internet).

I then did the following:

path_to_python ez_setup.py setuptools-0.6a10-py2.4.egg

it failed even though the setuptools-0.6a10-py2.4.egg was in the same
directory. It gives me an error:

urllib2.URLError: http://mail.python.org/mailman/listinfo/python-list