libxml2 Installation for Python 2.4
Hi, Can someone point me how to install libxml2 for python. It works fine on my Redhat 4.0 linux Box, but when I am trying to run my script on ARM target , it throws import error for libxml2. I am using xpath in my script and in header trying to import libxml2. Thanks in advance. Alok -- http://mail.python.org/mailman/listinfo/python-list
Struct usages in Python
Dear All, This might be very basic question for python, but I have been struggling with it. Your help will be highly appreciated. I have a class like below: class Event(): def __init__(self, cameraEventType="", zone=99, setDay="",setTime ="", clrTime=""): self.cameraEventType = cameraEventType self.zone = zone self.setDay = setDay self.setTime = setTime self.clrTime = clrTime I want to use array of Event class object in another class like below: class EventTimeFilter: def __init__(self): self.event[] = Event() *# Seems this is not allowed ?? * Can someone help me how can I use array of Event object in EventTimeFilter class. I planned to fill array of Event object in EventTimeFilter class method. Thanks in advance. Regards Alok -- http://mail.python.org/mailman/listinfo/python-list
multi dimensional dictionary
Dear All, I am using dictionary for filling my xpath parsed data. I wanted to use in the following manner. mydict[index] ["key1"] ["key2"]#Can someone help me with right declaration. So that I can fill my XML xpath parsed data mydict[0] ["person"] ["setTime"] = "12:09:30" mydict[0] ["person"] ["clrTime"] = "22:09:30" Can someone help me with right declaration usages. Your help will be highly appreciated. Regards Alok -- http://mail.python.org/mailman/listinfo/python-list
Re: Struct usages in Python
while traversing I get out of index error as mentioned below.
class EventTimeFilter:
def __init__(self):
* self.event = [Event()]*
def populateScheduleData(self):
self.doc = libxml2.parseFile(self.FILENAME)
for eachcamera in
self.doc.xpathEval('SetDeviceConfiguration/Camera/.'):
cameraIndex = eachcamera.get_properties()
#print cameraIndex
index = int(cameraIndex.content,10)
print index
xpathEventType = 'SetDeviceConfiguration/[EMAIL PROTECTED]' +
cameraIndex.content +']/Filter/Event'
for searchResults in self.doc.xpathEval(xpathEventType):
eventType = searchResults.get_properties()
* self.event[index-1].cameraEventType = eventType.content #
Error*
*#Error as below*
self.event[index-1].cameraEventType = eventType.content
IndexError: list index out of range
Any guidance why I am getting *list index out of range error*?
index value runs from 1 to 4.
Thanks for all your help.
Alok
On Wed, May 28, 2008 at 1:09 AM, Casey McGinty <[EMAIL PROTECTED]>
wrote:
>
>self.event[] = Event() *# Seems this is not allowed ?? *
>>
>
> self.event = [Event()]
>
> - Casey
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>
--
Regards
Alok Kumar
--
http://mail.python.org/mailman/listinfo/python-list
Re: Struct usages in Python
I am getting following error when tried as you suggested. self.event = [] #Create an empty list, bind to the name "event" under the "self" namespace self.event.append(Event()) #Create an event object and append to the end of the list *class Event(): ^ SyntaxError: invalid syntax* On Wed, May 28, 2008 at 1:07 AM, Patrick Mullen <[EMAIL PROTECTED]> wrote: > I don't know if this will go through (my posts seem to have become blocked > lately), but I'll give it a shot anyhow. > > You seem to be under a misconception that a python list is similar to a > list in say, Java or other languages that have a rigid idea of variables and > types. In python, a list is a list of objects - any type of object can be > stored in a list. Just as you don't declare types for variables, you also > don't declare types for lists. Here is your modified code: > > class Event(): >def __init__(self, cameraEventType="", zone=99, setDay="",setTime ="", > clrTime=""): > self.cameraEventType = cameraEventType > self.zone = zone > self.setDay = setDay > self.setTime = setTime > self.clrTime = clrTime > > class EventTimeFilter: >def __init__(self): >self.event = [] #Create an empty list, bind to the name "event" > under the "self" namespace >self.event.append(Event()) #Create an event object and append > to the end of the list > > > Python won't stop you from putting other objects into self.event besides > Event objects, but in practice this isn't often an issue. The real benefit, > is if you subclass event or make some other type of object that is similar > to events, with maybe some of the same fields, you can still store them in > the list and it will play along with the rest of your code. > > -- > http://mail.python.org/mailman/listinfo/python-list > -- Regards Alok Kumar -- http://mail.python.org/mailman/listinfo/python-list
Re: multi dimensional dictionary
Thanks to all for their kind help and time.
Alok
On Wed, May 28, 2008 at 4:11 AM, Peter Otten <[EMAIL PROTECTED]> wrote:
> Gary Herron wrote:
>
> > Alok Kumar wrote:
> >> Dear All,
> >>
> >> I am using dictionary for filling my xpath parsed data.
> >>
> >> I wanted to use in the following manner.
> >>
> >> mydict[index] ["key1"] ["key2"]#Can someone help me with right
> >> declaration.
> >>
> >> So that I can fill my XML xpath parsed data
> >>
> >> mydict[0] ["person"] ["setTime"] = "12:09:30"
> >> mydict[0] ["person"] ["clrTime"] = "22:09:30"
>
> [I didn't see the original post]
>
> >>> from collections import defaultdict
> >>> def make_inner():
> ... return defaultdict(lambda: defaultdict(make_inner))
> ...
> >>> mydict = make_inner()
> >>> mydict[0]["person"]["setTime"] = "12:09:30"
> >>> mydict[0]["person"]["shoes"]["color"] = "bright yellow"
> >>> mydict
> defaultdict( at 0x2b7afd0025f0>, {0:
> defaultdict( make_inner at 0x2b7afd002578>, {'person': defaultdict( at
> 0x2b7afd002668>, {'setTime': '12:09:30', 'shoes': defaultdict( make_inner at 0x2b7afd002578>, {'color': 'bright yellow'})})})})
>
> If that looks too messy, try a subclass:
>
> >>> class Dict(defaultdict):
> ... def __init__(self):
> ... defaultdict.__init__(self, Dict)
> ... def __repr__(self):
> ... return dict.__repr__(self)
> ...
> >>> mydict = Dict()
> >>> mydict[0]["person"]["setTime"] = "12:09:30"
> >>> mydict
> {0: {'person': {'setTime': '12:09:30'}}}
> >>> mydict[0]["person"]["shoes"]["color"] = "bright yellow"
> >>> mydict
> {0: {'person': {'setTime': '12:09:30', 'shoes': {'color': 'bright
> yellow'
>
> Peter
> --
> http://mail.python.org/mailman/listinfo/python-list
>
--
Regards
Alok Kumar
--
http://mail.python.org/mailman/listinfo/python-list
Re: Struct usages in Python
Thanks to everyone for your help. I am able to use array of structure (here Event is a class) in the following manner. But here I am fixing the array index as 4. Is there any easy way to keep it appending dynamically. self.event = [Event() for x in range(4)] # Event is a class as posted in original message. I have one set of structures and want to process them, subsequently couple of them will not be able to pass the criteria and all passed ones I wanted to put in another list where I can dynamically append the structure. So that I can post this list to server. Thanks in advance. Regards Alok On Wed, May 28, 2008 at 1:53 PM, Arnaud Delobelle <[EMAIL PROTECTED]> wrote: > Arnaud Delobelle <[EMAIL PROTECTED]> writes: > > > "Alex Gusarov" <[EMAIL PROTECTED]> writes: > > > >>> class Event(object): > >>> > >>> Always subclass object, unless you have a very compelling reason not > to, > >>> or you are subclassing something else. > >>> > >> > >> I've thought that if I write > >> > >> class Event: > >> pass > >> > >> , it'll be subclass of object too, I was wrong? > > > > You are wrong for Python 2.X, but right for Python 3 where old-style > > classes are gone for good. > > > > What you define with the statement > > > > class Event: pass > > > > is an 'old-style' class. Witness: > > > > >>> class Event: pass > > ... > > >>> class NewEvent(object): pass > > ... > > >>> type(Event) > > > > >>> type(NewEvent) > > > > >>> type(Event()) > > > > del>>> type(NewEvent()) > > > > > > All old-style classes are actually objects of type 'classobj' (they > > all have the same type!), all their instances are all of type 'instance'. > > Oops somthing disappeared in the copy/paste process: > >>>> class FooBar: pass >... > > > >>> type(FooBar) == type(Event) > > True > > >>> type(FooBar()) == type(Event()) > > True > > > > Whereas instances of new-style classes are of type their class: > > > > >>> class NewFooBar(object): pass > > ... > > >>> type(NewFooBar) == type(NewEvent) > > True > > >>> type(NewFooBar()) == type(NewEvent()) > > False > > > > However, in python 2.X (X > 2?), you can force all classes to of a > > certain type by setting the global variable '__metaclass__'. So: > > > > >>> type(Event) # Event is an old-style class > > > > >>> __metaclass__ = type > > >>> class Event: pass > > ... > > >>> type(Event) # Now Event is new-style! > > > > > > HTH > > > > -- > > Arnaud > -- > http://mail.python.org/mailman/listinfo/python-list > -- Regards Alok Kumar -- http://mail.python.org/mailman/listinfo/python-list
UTC datetime.fromtimestamp
Dear All,
I have UTC datetime as datetime.fromtimestamp(ParseDateTimeUTC("2007-12-06
20:37:05"))
How can I add a day into this. Your help will be highly appreciated.
Regards
Alok
--
http://mail.python.org/mailman/listinfo/python-list
ImportError: No module named _md5
I am trying to move from python 2.4 to python 2.5.2. After compiling the python 2.5.2, I found it is throwing "ImportError: No module named _md5". I found this topic on the mailing list, but no solution to fix it. Can someone help me out. It will be highly appreciated. Regards Alok -- http://mail.python.org/mailman/listinfo/python-list
Python HTTPS Bus Error
Hi, Can someone help me what to look for fixing Bus error. I must mention that I am working in embedded environment and it does have selective installation of python I am getting following error from client when it is trying to talk with server over *HTTPS*. HTTP works fine. *Alignment trap: python2.5 (1030) PC=0x4058a738 Instr=0xe5902004 Address=0x01* *35 FSR 0x001* *Bus error* Server throws SSL handshake failure error. It will be great if someone can throw any pointers. Regards Alok -- http://mail.python.org/mailman/listinfo/python-list
Basic Question about Python WebServer File handling
Hi, I need to have a python webserver which can handle Get request from the clients and upload the *files* from 4 different directories. Can someone please point me what to exactly look for. Thanks you very much for this great help. Regards Alok Kumar -- http://mail.python.org/mailman/listinfo/python-list
HTTP Error code Info
Hi I could get the HTTP error code using try: .. except: .. else: block. Is there any better way to get the HTTP Error code using urllib2 lib. Something like know the exact response number (200, 404 etc) without the above block. Regards Alok Kumar -- http://mail.python.org/mailman/listinfo/python-list
State machine Example in Python
Can someone please redirect me for a state machine example or design pattern used in Python. Regards Alok -- http://mail.python.org/mailman/listinfo/python-list
Python Minidom Help
Hi, I am reading a XML data from HTTP server and giving it to parse method. dom = parse(dataread) It throws following error File "/usr/lib/python2.3/site-packages/_xmlplus/dom/minidom.py", line 1908, in parse return expatbuilder.parse(file) File "/usr/lib/python2.3/site-packages/_xmlplus/dom/expatbuilder.py", line 922, in parse fp = open(file, 'rb') Can anyone please help? Regards Alok Kumar -- http://mail.python.org/mailman/listinfo/python-list
