schedule at specific hours
Hi there, I have a daemon running 24/7, and I want that it executes a certain function several times a day, as specified in an configfile (e.g. actiontimes=10:00,12:00,19:00) Do I have to fiddle with sched.scheduler and calc. time differences to schedule my events, or is there another (nicer...) way? Regards, Yves -- http://mail.python.org/mailman/listinfo/python-list
Activate a daemon several times a day
Hi, I have a daemon which runs permanently, and I want it to do a special operation at some specifiy times every day, consider this configfile extract: [general] runat=10:00,12:00 What would be the easiest and most pythonic way to do this? Something like this pseudocode: while True: if now(hours) in runat: act() sleep(60) sleep(10) Please enlighten me! Best regards, Yves -- http://mail.python.org/mailman/listinfo/python-list
pyqt show wizard
Hi, I have a mainwindow in my pyqt application, and on click of a button I want to start an assistant (wizard). I have create the wizard with the Qt Designer, generated the python code with pyuic, imported it from assistant import *, and subclassed it as usual. To show it, the onclick method of the button does: w = Wizard() w.show() bot nothing happens... How must I do to start the wizard...? Best regards, Yves -- http://mail.python.org/mailman/listinfo/python-list
Re: encoding problem
Sebastjan Trepca wrote:
I think you are trying to concatenate a unicode string with regular
one so when it tries to convert the regular string to unicode with
ASCII(default one) encoding it fails. First find out which of these
strings is regular and how it was encoded, then you can decode it like
this(if regular string is diff):
mailbody +=diff.decode('correct encoding')
Thanks I'll look into that...
It seems in general I have trouble with special characters...
What is the python way to deal with éàè öäü etc...
print 'é' fails here,
print u'é' as well :-(
How am I supposed to print non-ascii characters the correct way?
best regards,
Yves
Sebastjan
On 3/3/06, Yves Glodt [EMAIL PROTECTED] wrote:
Hi list,
Playing with the great pysvn I get this problem:
Traceback (most recent call last):
File D:\avn\mail.py, line 80, in ?
mailbody += diff
UnicodeDecodeError: 'ascii' codec can't decode byte 0xe9 in position
10710: ordinal not in range(128)
It seems the pysvn.client.diff function returns bytes (as I read in
the changelog of pysvn: http://svn.haxx.se/dev/archive-2005-10/0466.shtml)
How can I convert this string so that I can contatenate it to my
regular string?
Best regards,
Yves
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encoding problem
Hi list, Playing with the great pysvn I get this problem: Traceback (most recent call last): File D:\avn\mail.py, line 80, in ? mailbody += diff UnicodeDecodeError: 'ascii' codec can't decode byte 0xe9 in position 10710: ordinal not in range(128) It seems the pysvn.client.diff function returns bytes (as I read in the changelog of pysvn: http://svn.haxx.se/dev/archive-2005-10/0466.shtml) How can I convert this string so that I can contatenate it to my regular string? Best regards, Yves -- http://mail.python.org/mailman/listinfo/python-list
Re: Python threading, and processes
Robin Haswell wrote: Hey there I'm doing some threading in python with Python 2.3 and 2.4 on Ubuntu and Debian machines, and I've noticed that if I open a lot of threads (say, 50), I get lots of python processes with individual PIDs, which consume a disproportionate amount of CPU. Does this mean that Python is using the dummy_thread module by accident? And is there a realistic limitation to the number of threads I can do? Though I can not answer your question, I have however a similar situation here, on debian sarge. I have a simple daemon that runs one thread, and I noticed that on our sarges with kernel 2.4 my daemon creates 4 processes, on the ones with kernel 2.6, only one process. btw, I use the thread module. best regards, Yves Cheers -Rob -- http://mail.python.org/mailman/listinfo/python-list
test whether 2 objects are equal
Hello, I need to compare 2 instances of objects to see whether they are equal or not, but with the code down it does not work (it outputs not equal) #!/usr/bin/python class Test: var1 = '' var2 = '' test1 = Test() test1.var1 = 'a' test1.var2 = 'b' test2 = Test() test2.var1 = 'a' test2.var2 = 'b' if test1 == test2: print equal else: print not equal What am I doing wrong...? best regards, Yves -- http://mail.python.org/mailman/listinfo/python-list
Re: test whether 2 objects are equal
Rene Pijlman wrote: Yves Glodt: I need to compare 2 instances of objects to see whether they are equal or not, This prints equal: thank you! Have a nice day, Yves class Test(object): def __init__(self): self.var1 = '' self.var2 = '' def __eq__(self,other): return self.var1 == other.var1 and self.var2 == other.var2 test1 = Test() test1.var1 = 'a' test1.var2 = 'b' test2 = Test() test2.var1 = 'a' test2.var2 = 'b' if test1 == test2: print equal else: print not equal -- http://mail.python.org/mailman/listinfo/python-list
Re: test whether 2 objects are equal
bruno at modulix wrote: Yves Glodt wrote: Hello, I need to compare 2 instances of objects to see whether they are equal or not, but with the code down it does not work (it outputs not equal) #!/usr/bin/python class Test: var1 = '' var2 = '' Take care, this creates two *class* variables var1 and var2. For *instance* variables, you want: Thanks for making me aware. I'll have to read more about classes in python... ( As you can see I'm still new to it ;-) btw, this is the best list I've ever joined, very helpful and nice ppl. Have a nice day! Yves class Test: def __init__(self, var1='', var2=''): self.var1 = var1 self.var2 = var2 test1 = Test() test1.var1 = 'a' test1.var2 = 'b' This creates instances variables var1 and var2 for test1 (shadowing class variables). (snip the rest, see other posts in this thread) -- http://mail.python.org/mailman/listinfo/python-list
append to the end of a dictionary
Hi there,
I seem to be unable to find a way to appends more keys/values to the end
of a dictionary... how can I do that?
E.g:
mydict = {'a':'1'}
I need to append 'b':'2' to it to have:
mydict = {'a':'1','b':'2'}
How to do?
Best regards,
Yves
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Re: append to the end of a dictionary
Rene Pijlman wrote:
Yves Glodt:
I seem to be unable to find a way to appends more keys/values to the end
of a dictionary
A dictionary has no order, and therefore no end.
that means I can neither have a dictionary with 2 identical keys but
different values...?
I would need e.g. this:
(a list of ports and protocols, to be treated later in a loop)
ports = {'5631': 'udp', '5632': 'tcp', '3389': 'tcp', '5900': 'tcp'}
#then:
for port,protocol in ports.iteritems():
print port,protocol
#do more stuff
What would be the appropriate pythonic way of doing this?
mydict = {'a':'1'}
I need to append 'b':'2' to it to have:
mydict = {'a':'1','b':'2'}
How to do?
Like this:
mydict = {'a':'1'}
mydict['b'] = '2'
print mydict
{'a': '1', 'b': '2'}
{'a': '1', 'b': '2'} == {'b': '2', 'a': '1'}
True
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Re: append to the end of a dictionary
Yves Glodt wrote:
Hi there,
I seem to be unable to find a way to appends more keys/values to the end
of a dictionary... how can I do that?
E.g:
mydict = {'a':'1'}
I need to append 'b':'2' to it to have:
mydict = {'a':'1','b':'2'}
How to do?
Sorry for the noise...
mydict['b'] = '2'
Best regards,
Yves
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Re: append to the end of a dictionary
Paul Rubin wrote:
Yves Glodt [EMAIL PROTECTED] writes:
that means I can neither have a dictionary with 2 identical keys but
different values...?
No.
I would need e.g. this:
(a list of ports and protocols, to be treated later in a loop)
ports = {'5631': 'udp', '5632': 'tcp', '3389': 'tcp', '5900': 'tcp'}
#then:
for port,protocol in ports.iteritems():
print port,protocol
#do more stuff
What would be the appropriate pythonic way of doing this?
ports = [('5631', 'udp'),
('5632': 'tcp'),
('3389': 'tcp'),
('5900': 'tcp')]
for port,protocol in ports:
print port, protocol # ...
You'd append with
ports.append(('2345', 'tcp'))
note the double set of parentheses since you're appending a tuple.
Tim, Paul, I love you guys !
Thanks a lot
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python-soappy
Hi list, can anybody point me to a tutorial, howto or example code of python-soappy...? google did not have really useful results about... Best regards, Yves -- http://mail.python.org/mailman/listinfo/python-list
heartbeats
Hi, I need to write a heartbeat solution to monitor some external clients, and what is different as in the examples that I have seen so far is that I want my central server to poll the clients, and not the clients pinging the central server. In detail I need a daemon on my central server which e.g. which in a loop pings (not really ping but you know what I mean) each 20 seconds one of the clients. The only thing the client has to do is to accept the connection. (optionally sending back some bytes). If it refuses it is assumed to be offline. My central server, and this is important, should have a short timeout. If one client does not respond because it's offline, after max. 10 seconds the central server should continue with the next client. Which python functions would be the most convenient for this application? Best regards, Yves -- http://mail.python.org/mailman/listinfo/python-list
spawnle umask
Hi, I tried something like this but the umask part does not work clearly...: newpid = os.spawnle(os.P_NOWAIT,'/usr/bin/touch','/usr/bin/touch','xyz','umask 0113') What would be the correct syntax for setting the umask for the created process...? Best regards, Yves -- http://mail.python.org/mailman/listinfo/python-list
Re: spawnle umask
Fredrik Lundh wrote: Yves Glodt wrote: I tried something like this but the umask part does not work clearly...: newpid = os.spawnle(os.P_NOWAIT,'/usr/bin/touch','/usr/bin/touch','xyz','umask 0113') What would be the correct syntax for setting the umask for the created process...? not sure, but something like try: old_mask = os.umask(0113) newpid = os.spawnle(...) finally: os.umask(old_mask) # restore might work. It does, I did like this: os.umask(0113) newpid = os.spawnl(os.P_NOWAIT,'/usr/local/bin/wine','/usr/local/bin/wine',executable) But I wanted to use spawnle and it's env argument, to avoid setting umask manually... regards, Yves /F -- http://mail.python.org/mailman/listinfo/python-list
Re: spawnle umask
David Wahler wrote: Yves Glodt wrote: It does, I did like this: os.umask(0113) newpid = os.spawnl(os.P_NOWAIT,'/usr/local/bin/wine','/usr/local/bin/wine',executable) But I wanted to use spawnle and it's env argument, to avoid setting umask manually... The umask is not part of the environment, so there's no way to set it directly through spawnle. ok Why don't you want to use os.umask? Only because I thought spawnle could set it through env... But as it can't I will now go with os.umask. thanks, Yves -- David -- http://mail.python.org/mailman/listinfo/python-list
[Twisted-Python] ssh tunnel
(I asked about this several times in the twisted list but never got an answer, maybe here I'll more happy...) Hi, I'm new to conch and I wonder if somebody could point me to an example of how to create an ssh tunnel with conch to forward a connection (e.g. database or vnc) through that tunnel (if that's possible at all...) Thanks in advance and best regards, Yves -- http://mail.python.org/mailman/listinfo/python-list
Re: Python, Linux, Desktop Environment
[EMAIL PROTECTED] wrote: So, I've written my first GUI app in python. I've turned it into a binary .exe and .app that runs on Windows and Mac respectively, but on my Linux box, where I wrote the thing, I still have to drop to the command line and ./myscript.py. What can I do to make it a click and run sort of application in KDE or Gnome on Linux? I don't really understand what you mean... Have you tried simply creating a shortcut that points to your script.py? That should make it run with a click... HTH, Yves -- http://mail.python.org/mailman/listinfo/python-list
Clone an object
Hello, how can I clone a class instance? I have trouble finding that in the documentation... thanks and best regards, Yves -- http://mail.python.org/mailman/listinfo/python-list
Re: Pregunta sobre python
Andres de la Cuadra wrote: Hola, me llamo Andres de la cuadra, soy un usuario de python en chile y me gustaría saber como puedo cerrer un programa a través de python. Yo se que con la librería os puedo ejecutar programas, pero no e encontrado una librería para poder cerrarlos Hola Andres, puedes cerrer un programa con os.kill, pero depende de tu plataforma, por ejemplo en linux (no se para windows): os.kill(pid_del_proceso, 9) p.s. Vas a tener mas excito si escribes en ingles, esta es une lista en ingles ;-) Gracias -- http://mail.python.org/mailman/listinfo/python-list
how to start a process and get it's pid?
Hello,
another question rose for me today...
Is there a way to start an external process, in it's own context (not as
the exec-() functions do), and get it's pid...?
e.g.:
pid = wonderfulstartprocfunction('/usr/bin/wine bla.exe')
#... later
if (...):
os.kill(pid,9)
best regards,
Yves
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Re: how to start a process and get it's pid?
Gerhard Häring wrote: Yves Glodt wrote: Hello, another question rose for me today... Is there a way to start an external process, in it's own context (not as the exec-() functions do), and get it's pid...? [...] Check out the subprocess module if you're using Python 2.4. Otherwise, you can always use os.spawn*, for example: os.spawnl(os.P_NOWAIT, c:/windows/notepad.exe) 1944 Thanks, in Linux it seems to work. HTH, -- Gerhard -- http://mail.python.org/mailman/listinfo/python-list
Re: append to non-existing list
bruno at modulix wrote: Yves Glodt wrote: (snip) ok I see your point, and python's... (just FYI, and not to start a flamewar ;-): In php, the [] means append to an array object. yes, I know this. If the array does not exist yet, it's created. Which is what I don't like. It should crash. [] *is* explicit for arrays, IIRC, you can also use it to sbscript strings, but I wouldn't bet my life on this. thus for php it's clear what you want.) Nope. You may be in the case where you think the array already exists, and then you (well, I at least...) would prefer that PHP don't try to second-guess you... If and when I want to create an object, I tell it. If I dont tell create me an array, I don't want one to come in existence. not adding fuel to language flamewar (snip) an undefined notice, yes, not a warning... ;-) (snip) Ok... I thank you for all the explanations. It helps me to see more far. I (and will continue to) use php for web, and wanna standardize on python for all non-web stuff we are doing, You might discover that Python is just great for web programming too !-) Which raises another question... :-) Is there a possibility to bring together apache and python in a way that I can embed python into html? Or even, write a smallish webserver in python (using twisted maybe) whose only purpose is to serve pages and execute the embedded code...? so I might be a frequent guest on this list... You're welcome !-) And if you're a french speaker, there's also french-speaking mailing list and newsgroups. Merci pour l'info, I am, but for now the volume of this list is enough for me ... :-) -- http://mail.python.org/mailman/listinfo/python-list
Re: append to non-existing list
[EMAIL PROTECTED] wrote: Yves Glodt wrote: Which raises another question... :-) Is there a possibility to bring together apache and python in a way that I can embed python into html? What do you mean ? I need this (invalid example-html follows): html h1title of page/h1 ?py import time print pHello, today is: %s/p % (time.ctime()) ? /html Should that not be fairly easy to to, even from scratch, with the httplib module...? The advantage would be that I could write a webinterface for my database and reuse the classes I wrote for the command line app. Or even, write a smallish webserver in python (using twisted maybe) whose only purpose is to serve pages and execute the embedded code...? My favorite is TurboGears, a collection of modules and glue that brings together HTTP server(cherrypy), template(Kid) and SQL object store(SQLObject) that can do serious web developement yet don't need to read a book before starting. If you just need the server, cherrypy is pretty good and simple to start. Ok gonna look into that, regards, Yves -- http://mail.python.org/mailman/listinfo/python-list
iterate over class variables
Hello list, I need to iterate over a class and get all her variable names and values, e.g. considering this example: class testclass: var1 = 'ab' var2 = 'cd' var3 = 'ef' test = testclass() Then I wanna do sonmething like this: for name,value in test: print name print value fails with of course with: TypeError: iteration over non-sequence How can I do that? regards, Yves -- http://mail.python.org/mailman/listinfo/python-list
Re: iterate over class variables
Yves Glodt wrote: Hello list, I need to iterate over a class and get all her variable names and values, e.g. considering this example: class testclass: var1 = 'ab' var2 = 'cd' var3 = 'ef' test = testclass() Then I wanna do sonmething like this: for name,value in test: print name print value fails with of course with: TypeError: iteration over non-sequence How can I do that? sorry for selfreplying, but I found a solution: for key in dir(test): if '__' not in key: value = getattr(test,key) print key, value Does anything speak about this? Is there a better-performing way to do this? regards, Yves -- http://mail.python.org/mailman/listinfo/python-list
Re: iterate over class variables
Yves Glodt wrote: Yves Glodt wrote: Hello list, I need to iterate over a class and get all her variable names and values, e.g. considering this example: class testclass: var1 = 'ab' var2 = 'cd' var3 = 'ef' test = testclass() Then I wanna do sonmething like this: for name,value in test: print name print value fails with of course with: TypeError: iteration over non-sequence How can I do that? sorry for selfreplying, but I found a solution: for key in dir(test): if '__' not in key: value = getattr(test,key) print key, value Does anything speak about this? s/about/against /me: s/more sleep/less party Is there a better-performing way to do this? regards, Yves -- http://mail.python.org/mailman/listinfo/python-list
Re: iterate over class variables
bruno at modulix wrote:
Yves Glodt wrote:
Yves Glodt wrote:
Hello list,
I need to iterate over a class and get all her variable names and
values, e.g. considering this example:
class testclass:
var1 = 'ab'
var2 = 'cd'
var3 = 'ef'
Take care, these are *class* variables, not instance variables.
test = testclass()
Then I wanna do sonmething like this:
for name,value in test:
print name
print value
(snip)
sorry for selfreplying, but I found a solution:
for key in dir(test):
if '__' not in key:
value = getattr(test,key)
print key, value
Does anything speak about this?
1/ dir() doesn't necessary returns all the attributes of an object:
dir(...)
dir([object]) - list of strings
Return an alphabetized list of names comprising (some of) the attributes
of the given object, and of attributes reachable from it:
But I don't think this is a problem here.
2/ everything being an object, dir() also returns methods (a method
being a - callable - attribute of the object's class).
If you're only interested in data attributes, you may want to try this:
for key in dir(test):
if not key.startswith('__'):
value = getattr(test,key)
if not callable(value):
print key, value
This serves me well so far, thanks to you, Peter and Daniel for the
suggestions!
Yves (still amazed of the responsiveness of this list :-)
You can also check inspect.getmember()
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append to non-existing list
Hello, if I do this: for row in sqlsth: pkcolumns.append(row[0].strip()) etc without a prior: pkcolumns = []; I get this error on first iteration: UnboundLocalError: local variable 'pkcolums' referenced before assignment I guess that's normal as it's the way python works...?!? My question is: Is there no way to append to a non existing list? I am lazy for declaring it first, IMHO it bloats the code, and (don't know if it's good to say that here) where I come from (php) I was used to not-needing it... regards, Yves -- http://mail.python.org/mailman/listinfo/python-list
Re: append to non-existing list
[EMAIL PROTECTED] wrote: Yves My question is: Is there no way to append to a non existing list? My question in return is: How is Python supposed to know that pkcolumns is supposed to be a list instead of some other type of object that happens to define an append() method? I am fairly new to python (and I like it more and more), but I can not answer this question... As I said, where I come from it is possible, and how they do it is explained a little here: http://lu.php.net/manual/en/language.types.type-juggling.php As I want to learn, I will work with python the pythonic way, but sometimes I just fall back to what I know from php... :-) Thanks for your answer and the example code, Yves p.s. thanks for the import this hint For example, my code might contain this class definition before the suspect pkcolumns.append() call: class MaxLengthList: def __init__(self, maxsize=0): self.data = [] self.maxsize = maxsize def append(self, item): if self.maxsize and len(self.data) == self.maxsize: del self.data[0] self.data.append(item) def __getattr__(self, attr): return getattr(self.data, attr) I think it would be perfectly reasonable for Python to choose to instantiate my MaxLengthList instead of a plain old list. Yves I am lazy for declaring it first, IMHO it bloats the code, and Yves (don't know if it's good to say that here) where I come from (php) Yves I was used to not-needing it... I don't know php, but would also have to wonder how it knows to create a list instead of an integer (for example). Finally, from the Zen of Python (try import this at an interpreter prompt): In the face of ambiguity, refuse the temptation to guess. Skip . -- http://mail.python.org/mailman/listinfo/python-list
Re: append to non-existing list
[EMAIL PROTECTED] wrote: I am afraid you have to either go back to php or whatever programming language that fits your style or change your style to fit python. sorry for offending... I just asked a question, and now I know one more thing about python... And btw I really am surprised by the amount of answers that my question rose, in so little time! thanks all! There is a lot I don't like about python but if you have to use it, you have to cope with it. Yves Glodt wrote: My question is: Is there no way to append to a non existing list? I am lazy for declaring it first, IMHO it bloats the code, and (don't know if it's good to say that here) where I come from (php) I was used to not-needing it... regards, Yves -- http://mail.python.org/mailman/listinfo/python-list
Re: append to non-existing list
Juho Schultz wrote: Yves Glodt wrote: Hello, if I do this: for row in sqlsth: pkcolumns.append(row[0].strip()) etc without a prior: pkcolumns = []; I get this error on first iteration: UnboundLocalError: local variable 'pkcolums' referenced before assignment I guess that's normal as it's the way python works...?!? My question is: Is there no way to append to a non existing list? I am lazy for declaring it first, IMHO it bloats the code, and (don't know if it's good to say that here) where I come from (php) I was used to not-needing it... regards, Yves You mean you want to type pkcolumns only once to keep your code short? Would something like this be useful? pkcolumns = [row.strip() for row in sqlsth] I will look into this, maybe it's what I need, thanks! -- http://mail.python.org/mailman/listinfo/python-list
Re: append to non-existing list
bruno at modulix wrote: Yves Glodt wrote: Hello, if I do this: for row in sqlsth: pkcolumns.append(row[0].strip()) etc without a prior: pkcolumns = []; I get this error on first iteration: UnboundLocalError: local variable 'pkcolums' referenced before assignment I guess that's normal as it's the way python works...?!? yes sir. My question is: Is there no way to append to a non existing list? No. Definitively. And that's a Good Thing(tm). How would you use something that doesn't exist ??? I am lazy for declaring it first, s/declaring/instantiating/ If you were to use your own class Toto, would you ever hope that the following code would work : for v in some_seq: toto.dothis(v) without instantiating Toto and binding it to the name 'toto' before ? Well, in Python, a list is an instance of class list. There are syntactic sugar to instanciate a list (or a tuple or a string or a dict etc), but this: my_list = [] is strictly equivalent to this: my_list = list() Now let's try something else: class Machin(object): def append(self, value): pass class Bidule(object): def append(self, value): pass for i in range(10): m.append(i) How should Python interpret this ? Should it create a list, or a Machin, or a Bidule, or an instance of whatever imported class having a append() method ? ok I see your point, and python's... (just FYI, and not to start a flamewar ;-): In php, the [] means append to an array object. If the array does not exist yet, it's created. [] *is* explicit for arrays, thus for php it's clear what you want.) IMHO it bloats the code, run your python interpreter and type: import this Then read carefully. Now if being explicit still hurts your personal convictions, there's this other language with a name starting with p... !-) no thanks, this is the 21st century ;-) and (don't know if it's good to say that here) where I come from (php) I was used to not-needing it... Not creating an Array before using it is Bad Style in PHP (and generate a Warning BTW). an undefined notice, yes, not a warning... ;-) There are warts in Python (as in any other languages), and there are things that sometimes bore me but are not really warts. But having to explicitely instanciate objects can't be seen as a wart in any language IMHO !-) Ok... I thank you for all the explanations. It helps me to see more far. I (and will continue to) use php for web, and wanna standardize on python for all non-web stuff we are doing, so I might be a frequent guest on this list... have a nice day, Yves -- http://mail.python.org/mailman/listinfo/python-list
Re: append to non-existing list
[EMAIL PROTECTED] wrote: Thomas Bellman wrote: The next time you go shopping at your local super-market, do *not* get a shopping-cart (or shopping-basket, or any similar container). As you pick up the things you want to buy, try to put them into the non-existing cart. Perhaps you will then become enlightened. But in PHP(and I believe Perl), it is more like : oops, I need a cart. shoutHello, I need a cart here, please and magically, someone wheel you a cart which you can put your stuff in. The @ is the magic calls for service. So as a customer, this sounds like better service but that will create problems to the super market as it need extra staff for this service and the environment is noiser, that is another story. :-) I will never mention any p-language except python in this list anymore... -- http://mail.python.org/mailman/listinfo/python-list
Re: append to non-existing list
Max M wrote:
Yves Glodt wrote:
bruno at modulix wrote:
Yves Glodt wrote:
Hello,
if I do this:
for row in sqlsth:
pkcolumns.append(row[0].strip())
etc
without a prior:
pkcolumns = [];
I get this error on first iteration:
UnboundLocalError: local variable 'pkcolums' referenced before
assignment
I guess that's normal as it's the way python works...?!?
Well you could do something like this. (Untested and unrecommended)
self.__dict__.setdefault('pkcolumns', []).append(row[0].strip())
Personally I find
pkcolumns = []
pkcolumns .append(row[0].strip())
to be nicer ;-)
Yes me too, I'm gonna stick to that... :-)
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