Does Python provide "Struct" data structure?

[Daniel Mark]

Hello all:

I have found a useful module in IPython, named 'from IPython.ipstruc t
import Struct".

So I can use it as follows:

############### ############### ######
from IPython.ipstruc t import Struct

mystruct = Struct(echo = 1,
verb = 'Verbose',
filedir = 'C:/temp',
)

print mystruct.filedi r
############### ############### #######

I have two following questions:

1Does Python provide such Struct in this standard libary.
Python has "4.3 struct -- Interpret strings as packed binary data", but
it looks like different
from what I really want to get.

2Is it safe to use IPython's modules in my python program?
I will pack all my code into an executable application by using py2exe.
The clients would like to use this application without any python
intallation.
What should I pay attention if I include the IPython modules into my
python code and
convert it into executable application by using py2exe?

The setup.py for my application is as follows:
############### ############### #############
from distutils.core import setup
import py2exe

options = {
"bundle_fil es": 1,
# "ascii": 1, # to make a smaller executable, don't include the
encodings
"compressed ": 1, # compress the library archive
}

setup(
# The first three parameters are not required, if at least a
# 'version' is given, then a versioninfo resource is built from
# them and added to the executables.
version = "1.0",
description = "mycode",
name = "mycode",

options = {"py2exe": options},
zipfile = None, # append zip-archive to the executable.

# targets to build
console=['mycode.py'],
)
############### ############### ############### ######

Does I need to make any modification if I include IPython module in my
code?

Thank you for your helps
-Daniel

[jay graves]

Daniel Mark wrote:

I have found a useful module in IPython, named 'from IPython.ipstruc t
import Struct".
So I can use it as follows:
############### ############### ######
from IPython.ipstruc t import Struct

mystruct = Struct(echo = 1,
verb = 'Verbose',
filedir = 'C:/temp',
)

print mystruct.filedi r
############### ############### #######

Does 'Bunch' fit the bill?
http://aspn.activestate.com/ASPN/Coo...n/Recipe/52308

....
jay graves

[Bjoern Schliessmann]

Daniel Mark wrote:

I have two following questions:

1Does Python provide such Struct in this standard libary.
Python has "4.3 struct -- Interpret strings as packed binary
data", but it looks like different from what I really want to get.

Yes, that module is used when you want to deal with C structs in
binary form (e.g. useful at networking with binary protocols).

Try using dictionaries or custom, field-only class instances
as "struct".

Regards,
Björn

--
BOFH excuse #374:

It's the InterNIC's fault.

[MonkeeSage]

Hi Daniel,

To avoid problems you could vendor the ipython file you require, but an
easier solution may just be to implement your own version of the class
(it's extreemly easy):

class struct():
def __init__(self, *args, **kwargs):
for k, v in kwargs.items():
setattr(self, k, v)

mystruct = struct(echo = 1,
verb = 'Verbose',
filedir = 'C:/temp')

print mystruct.filedi r

Regards,
Jordan

[Brian Blais]

Daniel Mark wrote:

>
1Does Python provide such Struct in this standard libary.
Python has "4.3 struct -- Interpret strings as packed binary data", but
it looks like different
from what I really want to get.

I like the following version:

class Struct(dict):

def __getattr__(sel f,name):

try:
val=self[name]
except KeyError:
val=super(Struc t,self).getattr (self,name)

return val

def __setattr__(sel f,name,val):

l=dir(self)

if name in self:
super(Struct,se lf).setattr(sel f,name,val)
else:
self[name]=val
it has the added benefit of having all of the dict methods too.
bb

--
-----------------

bb****@bryant.e du
http://web.bryant.edu/~bblais