Re: Loop Question
Hi, Am 24.06.2013 14:12 schrieb christheco...@gmail.com: username=raw_input(Please enter your username: ) password=raw_input(Please enter your password: ) if username == john doe and password == fopwpo: print Login Successful else: print Please try again while not username or not password or username != john doe or password != fopwpo: print Please try again username=raw_input(Please enter your username: ) password=raw_input(Please enter your password: ) print Login Successful -- Opt out of PRISM, the NSA’s global data surveillance program. Stop reporting your online activities to the American government with these free alternatives to proprietary software. http://prism-break.org/ -- http://mail.python.org/mailman/listinfo/python-list
Re: Loop Question
On 06/24/2013 08:20 AM, Lutz Horn wrote: Hi, Am 24.06.2013 14:12 schrieb christheco...@gmail.com: username=raw_input(Please enter your username: ) password=raw_input(Please enter your password: ) if username == john doe and password == fopwpo: print Login Successful else: print Please try again while not username or not password or username != john doe or password != fopwpo: print Please try again username=raw_input(Please enter your username: ) password=raw_input(Please enter your password: ) print Login Successful That requires you to have four raw_input() calls instead of two. And what purpose does adding the two new clauses to the while test serve? How is: while not username or not password or username != john doe or password != fopwpo: different from: while username != john doe or password != fopwpo: (other than taking more time and space, and being harder to read) ? -- DaveA -- http://mail.python.org/mailman/listinfo/python-list
Re: Loop Question
Here is my code...I'm using 2.7.5 username=raw_input(Please enter your username: ) password=raw_input(Please enter your password: ) if username == john doe and password == fopwpo: print Login Successful else: print Please try again -- http://mail.python.org/mailman/listinfo/python-list
Re: Loop Question
On Monday, June 24, 2013 5:42:51 PM UTC+5:30, christ...@gmail.com wrote: Here is my code...I'm using 2.7.5 username=raw_input(Please enter your username: ) password=raw_input(Please enter your password: ) if username == john doe and password == fopwpo: print Login Successful else: print Please try again Good! Now take Steven's suggestion loop with a break and bung your code into Steven's loop. [Hint: You have to add a break somewhere!] Or at least try! -- http://mail.python.org/mailman/listinfo/python-list
Re: Loop Question
On Sunday, June 23, 2013 6:18:35 PM UTC-5, christ...@gmail.com wrote: How do I bring users back to beginning of user/password question once they fail it? thx Can't seem to get this to cooperate...where does the while statement belong? -- http://mail.python.org/mailman/listinfo/python-list
Re: Loop Question
In e41ce3a3-c8cb-4cfc-ba86-462f40f32...@googlegroups.com christheco...@gmail.com writes: On Sunday, June 23, 2013 6:18:35 PM UTC-5, christ...@gmail.com wrote: How do I bring users back to beginning of user/password question once they fail it? thx Can't seem to get this to cooperate...where does the while statement belong? while True: username = raw_input(Please enter your username: ) password = raw_input(Please enter your password: ) if username == john doe and password == fopwpo: print Login Successful break else: print Please try again -- John Gordon A is for Amy, who fell down the stairs gor...@panix.com B is for Basil, assaulted by bears -- Edward Gorey, The Gashlycrumb Tinies -- http://mail.python.org/mailman/listinfo/python-list
Re: Loop Question
On Mon, Jun 24, 2013 at 8:42 PM, John Gordon gor...@panix.com wrote: In e41ce3a3-c8cb-4cfc-ba86-462f40f32...@googlegroups.com christheco...@gmail.com writes: On Sunday, June 23, 2013 6:18:35 PM UTC-5, christ...@gmail.com wrote: How do I bring users back to beginning of user/password question once they fail it? thx Can't seem to get this to cooperate...where does the while statement belong? while True: username = raw_input(Please enter your username: ) password = raw_input(Please enter your password: ) if username == john doe and password == fopwpo: print Login Successful break else: print Please try again You didn’t test the code, did you? Because the code you posted is right. Remember to always test code before submitting. And note that the getpass module is what you should use for that second thing in real life, for the security of your users. -- Kwpolska http://kwpolska.tk | GPG KEY: 5EAAEA16 stop html mail| always bottom-post http://asciiribbon.org| http://caliburn.nl/topposting.html -- http://mail.python.org/mailman/listinfo/python-list
Re: Loop Question
In mailman.3754.1372100014.3114.python-l...@python.org =?UTF-8?B?Q2hyaXMg4oCcS3dwb2xza2HigJ0gV2Fycmljaw==?= kwpol...@gmail.com writes: while True: username = raw_input(Please enter your username: ) password = raw_input(Please enter your password: ) if username == john doe and password == fopwpo: print Login Successful break else: print Please try again You didn't test the code, did you? Because the code you posted is right. It's right, therefore I did not test it? I don't understand. If the code has a bug, please point it out. And note that the getpass module is what you should use for that second thing in real life, for the security of your users. I'm sure this is just an exercise for the OP to understand loops. Security would be counter-productive. -- John Gordon A is for Amy, who fell down the stairs gor...@panix.com B is for Basil, assaulted by bears -- Edward Gorey, The Gashlycrumb Tinies -- http://mail.python.org/mailman/listinfo/python-list
Re: Loop Question
On 06/24/2013 03:00 PM, John Gordon wrote: In mailman.3754.1372100014.3114.python-l...@python.org =?UTF-8?B?Q2hyaXMg4oCcS3dwb2xza2HigJ0gV2Fycmljaw==?= kwpol...@gmail.com writes: while True: username = raw_input(Please enter your username: ) password = raw_input(Please enter your password: ) if username == john doe and password == fopwpo: print Login Successful break else: print Please try again You didn't test the code, did you? Because the code you posted is right. It's right, therefore I did not test it? I don't understand. I expect that Chris simply misinterpreted the quoting in your message, thinking that the OP had both typed the Can't seem to get this to cooperate...where does t... and the correct code. In fact, the OP typed the former, and you typed the latter. -- DaveA -- http://mail.python.org/mailman/listinfo/python-list
Loop Question
How do I bring users back to beginning of user/password question once they fail it? thx -- http://mail.python.org/mailman/listinfo/python-list
Re: Loop Question
On 06/23/2013 05:18 PM, christheco...@gmail.com wrote: How do I bring users back to beginning of user/password question once they fail it? thx This is not a very good question. There is no context so we cannot tell if you are talking about a command line program that prompts for a username and password or a GUI program with a text box asking for the user/password or something else. Nor how exactly you go about doing the asking. Some code showing what you are trying to do would help a lot. I'll guess you're asking about a simple command line program. Maybe something like the following is what you want? while True: user = input (User? ).strip() pw = input (Password? ).strip() if check_user (user, pw): break print (Hello %s % user) check_user() is a function you'll define somewhere that checks the user and password and returns True if they are correct and False if not. Since you didn't say, I'm also assuming you're using Python 3; for Python 2 the code will be a little different. This is a useful guide to asking questions in a way that makes it easier for people to answer (and thus help *you* get better, faster answers): http://www.catb.org/esr/faqs/smart-questions.html -- http://mail.python.org/mailman/listinfo/python-list
Re: Loop Question
On Sun, 23 Jun 2013 16:18:35 -0700, christhecomic wrote: How do I bring users back to beginning of user/password question once they fail it? thx Write a loop. If they don't fail (i.e. they get the password correct), then break out of the loop. -- Steven -- http://mail.python.org/mailman/listinfo/python-list
Re: Loop Question
I'm using 2.7 -- http://mail.python.org/mailman/listinfo/python-list
Re: Tkinter event loop question
On Aug 29, 10:46 pm, Russell E. Owen [EMAIL PROTECTED] wrote: you can safely compute stuff with a background thread and display it from the main thread). But cross that bridge later. -- Russell thanks Russel gordon -- http://mail.python.org/mailman/listinfo/python-list
Re: Tkinter event loop question
On Aug 29, 4:45 am, Russell E. Owen [EMAIL PROTECTED] wrote: your Controller object should not create root nor should it call mainloop to start the event loop. guys thanks for the helpful replies..I rewrote the code as you advised. It creates a controller object and a gui object from main script.However i had to chain some method calls in my code.i am wondering if that can be avoided in some way. this is the sequence 1.user enters some value in the textfield,and clicks OKbutton 2.on OKbuttonclick ,the gui takes userinput value and quits eventloop.It then calls controller and pass the userinputvalue. 3.controller does some calculation(i shd have an external program to do calculation,but for simplicity i just wrote a method inside controller) with the given value,obtains the result and calls gui's updateDisplay(), passing the result value. 4.the gui creates the result as text on a canvas.then the mainloop() is called to resume event loop again user enters some value in the textfield,and clicks OKbutton ... I exit the application by clicking quitButton that calls destroy() on top level window. I tried my application by entering some value on text field and then clicking OKbutton ,the calculated result is displayed on canvas .I do this process say 3 times ..Then i click the Quit button and the window closes. I have put a print statement inside the gui's updateDisplay()method right after the resuming of event loop by parent.mainloop().This print statement gets printed as many times as i had clicked the OK button(here in this case 3 times).Is this due to clearing of the stack ? I feel that it was not a good design ..I would be grateful if someone would tell me how i could improve it..can those chaining of method calls be avoided? this is how i restructured the code moduleA.py --- import moduleB from Tkinter import Tk class MyController(object): def __init__(self): print controller() def validateSelection(self,userinputVal): if(userinputVal 50 or userinputVal==0): userinputVal=50 self.doSomeCalculation(userinputVal) def doSomeCalculation(self,userinputVal): resultvalue=2*userinputVal +10 self.updateResults(resultvalue) def updateResults(self,resultvalue): self.myapp.updateDisplay(resultvalue); if __name__ == __main__: controller=MyController() root = Tk() root.wm_title(MyUIApp) controller.myapp =moduleB.MyUI(root,controller) root.mainloop() moduleB.py --- from Tkinter import * class MyUI(object): def __init__(self, parent,controller): self.myParent = parent self.mainframe = Frame(parent,background=grey) self.mainframe.pack(fill=BOTH,expand=YES) self.controller=controller added a canvas and OK,QUIT buttons def okBtnClick(self): print okBtnClicked self.okButton.configure(state=DISABLED) userinputvalue = self.getUserInputValue() self.myParent.quit() #quits event loop self.controller.validateSelection(userinputvalue) def quitBtnClick(self): print Quit Btn clicked self.myParent.destroy() def updateDisplay(self,resultValue): message='result is='+str(resultValue) self.canvresult.delete(ALL) self.canvresult.create_text(1, 40, anchor=W, text=message, width=280) self.okButton.configure(state=NORMAL) self.myParent.mainloop() # resumes event loop print 'in updateDisplay():called mainloop' thanks gordon -- http://mail.python.org/mailman/listinfo/python-list
Re: Tkinter event loop question
In article [EMAIL PROTECTED], gordon [EMAIL PROTECTED] wrote: On Aug 29, 4:45 am, Russell E. Owen [EMAIL PROTECTED] wrote: your Controller object should not create root nor should it call mainloop to start the event loop. guys thanks for the helpful replies..I rewrote the code as you advised. It creates a controller object and a gui object from main script.However i had to chain some method calls in my code.i am wondering if that can be avoided in some way. this is the sequence 1.user enters some value in the textfield,and clicks OKbutton 2.on OKbuttonclick ,the gui takes userinput value and quits eventloop.It then calls controller and pass the userinputvalue. 3.controller does some calculation(i shd have an external program to do calculation,but for simplicity i just wrote a method inside controller) with the given value,obtains the result and calls gui's updateDisplay(), passing the result value. 4.the gui creates the result as text on a canvas.then the mainloop() is called to resume event loop again user enters some value in the textfield,and clicks OKbutton ... I exit the application by clicking quitButton that calls destroy() on top level window. I tried my application by entering some value on text field and then clicking OKbutton ,the calculated result is displayed on canvas .I do this process say 3 times ..Then i click the Quit button and the window closes. I have put a print statement inside the gui's updateDisplay()method right after the resuming of event loop by parent.mainloop().This print statement gets printed as many times as i had clicked the OK button(here in this case 3 times).Is this due to clearing of the stack ? I feel that it was not a good design ..I would be grateful if someone would tell me how i could improve it..can those chaining of method calls be avoided? this is how i restructured the code Why do you quite the event loop? Just leave it running. On pressing the button you validate the input, perform the computation and display the result, all without leaving the event loop. If your computation is very slow then you have other issues to deal with (in particular background threads cannot safely talk to Tkinter, but you can safely compute stuff with a background thread and display it from the main thread). But cross that bridge later. -- Russell -- http://mail.python.org/mailman/listinfo/python-list
Re: Tkinter event loop question
On Aug 27, 10:42 pm, Fredrik Lundh [EMAIL PROTECTED] wrote: so I guess the question here is from where you expect to call that method, and what you expect Tkinter to do when you call it... thanks for the reply i was planning to write a controller (as in MVC) that will instantiate a gui class and show the ui.the gui will send user input back to the controller which in turn will process it and send a result to the gui to be displayed something like controllermodule.py class Controller: def createGUI(self): root=Tk() self.mygui=uimodule.MyGUI(root) root.mainloop() def sendMessageToUI(self): self.mygui.displayResult(someresultValue) i don't know if this is the right way to do this..when i call sendMessage() it tries to call displayResult() on the gui instance which is already in an event loop.displayResult() gets called only after the event loop is finished(when i close gui window). is there a way to keep the gui window open and have the controller send a message to the gui instance so that i can pass the processed result value to the gui instance? thanks gordon -- http://mail.python.org/mailman/listinfo/python-list
Re: Tkinter event loop question
In article [EMAIL PROTECTED], gordon [EMAIL PROTECTED] wrote: On Aug 27, 10:42 pm, Fredrik Lundh [EMAIL PROTECTED] wrote: so I guess the question here is from where you expect to call that method, and what you expect Tkinter to do when you call it... thanks for the reply i was planning to write a controller (as in MVC) that will instantiate a gui class and show the ui.the gui will send user input back to the controller which in turn will process it and send a result to the gui to be displayed something like controllermodule.py class Controller: def createGUI(self): root=Tk() self.mygui=uimodule.MyGUI(root) root.mainloop() def sendMessageToUI(self): self.mygui.displayResult(someresultValue) i don't know if this is the right way to do this..when i call sendMessage() it tries to call displayResult() on the gui instance which is already in an event loop.displayResult() gets called only after the event loop is finished(when i close gui window). is there a way to keep the gui window open and have the controller send a message to the gui instance so that i can pass the processed result value to the gui instance? Normally MVC applies within one application with one event loop. So you set up your GUI and then start the event loop. The GUI will process user events (e.g. typing text, pressing buttons, selecting menus) as callbacks that do things like create Controller objects and execute methods on them. So for starters your Controller object should not create root nor should it call mainloop to start the event loop. Those two actions should be done once by the main script that launches your application. As to where to go from here...it would help to know more about what you are trying to do. -- Russell -- http://mail.python.org/mailman/listinfo/python-list
Tkinter event loop question
is it possible to send a message to the gui instance while the Tk event loop is running?I mean after i create a gui object like root=Tk() mygui=SomeUI(root) and call root.mainloop() can i send message to mygui without quitting the ui or closing the window?i tried some code like mygui.someMethod() but it only gets executed after i close the the ui window.Is there a way to get this message passing while gui is running ? (forgive me ,it is a repeat question..but i am a bit desperate) thanks gordon -- http://mail.python.org/mailman/listinfo/python-list
Re: Tkinter event loop question
gordon wrote: is it possible to send a message to the gui instance while the Tk event loop is running?I mean after i create a gui object like root=Tk() mygui=SomeUI(root) and call root.mainloop() can i send message to mygui without quitting the ui or closing the window?i tried some code like mygui.someMethod() but it only gets executed after i close the the ui window.Is there a way to get this message passing while gui is running ? it's the event loop that keeps Tkinter running, and Tkinter then calls your program (typically via command callbacks or event handlers) when it's time to do something. so I guess the question here is from where you expect to call that method, and what you expect Tkinter to do when you call it... /F -- http://mail.python.org/mailman/listinfo/python-list
Re: Tkinter event loop question
In article [EMAIL PROTECTED], Fredrik Lundh [EMAIL PROTECTED] wrote: gordon wrote: is it possible to send a message to the gui instance while the Tk event loop is running?I mean after i create a gui object like . . . but it only gets executed after i close the the ui window.Is there a way to get this message passing while gui is running ? it's the event loop that keeps Tkinter running, and Tkinter then calls your program (typically via command callbacks or event handlers) when it's time to do something. so I guess the question here is from where you expect to call that method, and what you expect Tkinter to do when you call it... . . . ... but there certainly are Tkinter applications that respond to the user or other outside messages. Just as Fredrik advises, the next step would be for you to provide a bit of detail on what you have in mind for passing a message in. -- http://mail.python.org/mailman/listinfo/python-list
newbie: for loop within for loop question
Hi everyone, I'm studying python via the excellent how to think like a python programmer book by Allen Downey. Noob question follows... I have a txt file (animals.txt) which contains the following text each on a separate line: aardvark, bat, cat, dog, elephant, fish, giraffe, horse, inchworm, jackelope I want to create a function that loops through the animals.txt file and does *not* print the word if any of the user specified letters are in that word. def hasnolet(x): -- http://mail.python.org/mailman/listinfo/python-list
Re: newbie: for loop within for loop question
Dennis, thanks for your reply. unfortunately i accidentally posted only half of my question! the real post should be up now. my apologies. takayuki On Jun 16, 10:15 am, Dennis Lee Bieber [EMAIL PROTECTED] wrote: On Sun, 15 Jun 2008 17:18:54 -0700 (PDT), takayuki [EMAIL PROTECTED] declaimed the following in comp.lang.python: Hi everyone, I'm studying python via the excellent how to think like a python programmer book by Allen Downey. Noob question follows... I have a txt file (animals.txt) which contains the following text each on a separate line: aardvark, bat, cat, dog, elephant, fish, giraffe, horse, inchworm, jackelope I want to create a function that loops through the animals.txt file and does *not* print the word if any of the user specified letters are in that word. def hasnolet(x): Hope this wasn't a homework assignment... It gave me my first excuse to try the set module... import sets words = [ aardvark, bat, cat, dog, elephant, fish ] exclude = want excludeset = sets.Set(exclude) excludeset Set(['a', 't', 'w', 'n']) for w in words: ... if not excludeset.intersection(w): ... print w ... dog fish -- WulfraedDennis Lee Bieber KD6MOG [EMAIL PROTECTED] [EMAIL PROTECTED] HTTP://wlfraed.home.netcom.com/ (Bestiaria Support Staff: [EMAIL PROTECTED]) HTTP://www.bestiaria.com/ -- http://mail.python.org/mailman/listinfo/python-list
Re: newbie: for loop within for loop question
The sets module is no longer needed, as we have the built-in sets type. Its even getting a literal syntax soon. As for the original problem, I agree on the homework smell. On Jun 15, 2008, at 9:31 PM, takayuki wrote: Dennis, thanks for your reply. unfortunately i accidentally posted only half of my question! the real post should be up now. my apologies. takayuki On Jun 16, 10:15 am, Dennis Lee Bieber [EMAIL PROTECTED] wrote: On Sun, 15 Jun 2008 17:18:54 -0700 (PDT), takayuki [EMAIL PROTECTED] declaimed the following in comp.lang.python: Hi everyone, I'm studying python via the excellent how to think like a python programmer book by Allen Downey. Noob question follows... I have a txt file (animals.txt) which contains the following text each on a separate line: aardvark, bat, cat, dog, elephant, fish, giraffe, horse, inchworm, jackelope I want to create a function that loops through the animals.txt file and does *not* print the word if any of the user specified letters are in that word. def hasnolet(x): Hope this wasn't a homework assignment... It gave me my first excuse to try the set module... import sets words = [ aardvark, bat, cat, dog, elephant, fish ] exclude = want excludeset = sets.Set(exclude) excludeset Set(['a', 't', 'w', 'n']) for w in words: ... if not excludeset.intersection(w): ... print w ... dog fish -- WulfraedDennis Lee Bieber KD6MOG [EMAIL PROTECTED] [EMAIL PROTECTED] HTTP://wlfraed.home.netcom.com/ (Bestiaria Support Staff: web- [EMAIL PROTECTED]) HTTP://www.bestiaria.com/ -- http://mail.python.org/mailman/listinfo/python-list -- http://mail.python.org/mailman/listinfo/python-list
Regex loop question
Hi Experts,
I've written a peice of code that works fine and fits, and passes
values into a peice of SPSS code, the problem is that it is not
dynamic, and so i though about how i can make it dynamic, (other code
may not have upto 10 some may have more) and came up with regex for an
idea, but i can't seem to make it work, can anyone offer any advice?
Below is current working code
time_variables = {ActivityTime: Activity_Time,
ExposureTime_Last:Exposure_Time_1,
ExposureTime_Last2:Exposure_Time_2,
ExposureTime_Last3:Exposure_Time_3,
ExposureTime_Last4:Exposure_Time_4,
ExposureTime_Last5:Exposure_Time_5,
ExposureTime_Last6:Exposure_Time_6,
ExposureTime_Last7:Exposure_Time_7,
ExposureTime_Last8:Exposure_Time_8,
ExposureTime_Last9:Exposure_Time_9,
ExposureTime_Last10:Exposure_Time_10}
for Var in time_variables.keys():
time_manips = (COMPUTE %s = SUBSTR(%s,(INDEX(%s,'T'))+1) .
COMPUTE %s = number(%s, TIME8).
VARIABLE LABEL %s.
VARIABLE LEVEL %s (SCALE).
FORMATS %s (TIME8).
VARIABLE WIDTH %s (8).
EXECUTE.) %(Var, Var,
Var,time_variables[Var],Var,time_variables[Var],time_variables[Var],time_variables[Var],time_variables[Var])
spss.Submit(time_manips)
Now to make it dynamic i've gone for the following...
reg_time = re.compile(^ExposureTime_Last([0-9]*)$)
reg_Activity = re.compile(^ActivityTime)
for Var in time_variables.keys():
if reg_time.match(Var):
match = reg_time.match(Var)
E_time = Exposure_Time_%s % match.groups()[0]
else:
match = reg_time.match(Var)
match.groups()[0] = Activity_Time
time_manips = (COMPUTE %s = SUBSTR(%s,(INDEX(%s,'T'))+1) .
COMPUTE %s = number(%s, TIME8).
VARIABLE LABEL %s.
VARIABLE LEVEL %s (SCALE).
FORMATS %s (TIME8).
VARIABLE WIDTH %s (8).
EXECUTE.) %(Var, Var,
Var,time_variables[Var],Var,time_variables[Var],time_variables[Var],time_variables[Var],time_variables[Var])
print(time_manips)
All help welcome, or if a different approach is better please let me
know
Mike
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Re: Regex loop question
Mike P wrote:
Hi Experts,
I've written a peice of code that works fine and fits, and passes
values into a peice of SPSS code, the problem is that it is not
dynamic, and so i though about how i can make it dynamic, (other code
may not have upto 10 some may have more) and came up with regex for an
idea, but i can't seem to make it work, can anyone offer any advice?
Below is current working code
time_variables = {ActivityTime: Activity_Time,
ExposureTime_Last:Exposure_Time_1,
ExposureTime_Last2:Exposure_Time_2,
ExposureTime_Last3:Exposure_Time_3,
ExposureTime_Last4:Exposure_Time_4,
ExposureTime_Last5:Exposure_Time_5,
ExposureTime_Last6:Exposure_Time_6,
ExposureTime_Last7:Exposure_Time_7,
ExposureTime_Last8:Exposure_Time_8,
ExposureTime_Last9:Exposure_Time_9,
ExposureTime_Last10:Exposure_Time_10}
for Var in time_variables.keys():
time_manips = (COMPUTE %s = SUBSTR(%s,(INDEX(%s,'T'))+1) .
COMPUTE %s = number(%s, TIME8).
VARIABLE LABEL %s.
VARIABLE LEVEL %s (SCALE).
FORMATS %s (TIME8).
VARIABLE WIDTH %s (8).
EXECUTE.) %(Var, Var,
Var,time_variables[Var],Var,time_variables[Var],
time_variables[Var],time_variables[Var],time_variables[Var])
spss.Submit(time_manips)
Now to make it dynamic i've gone for the following...
reg_time = re.compile(^ExposureTime_Last([0-9]*)$)
reg_Activity = re.compile(^ActivityTime)
for Var in time_variables.keys():
if reg_time.match(Var):
match = reg_time.match(Var)
E_time = Exposure_Time_%s % match.groups()[0]
else:
match = reg_time.match(Var)
match.groups()[0] = Activity_Time
time_manips = (COMPUTE %s = SUBSTR(%s,(INDEX(%s,'T'))+1) .
COMPUTE %s = number(%s, TIME8).
VARIABLE LABEL %s.
VARIABLE LEVEL %s (SCALE).
FORMATS %s (TIME8).
VARIABLE WIDTH %s (8).
EXECUTE.) %(Var, Var,
Var,time_variables[Var],Var,time_variables[Var],time_variables[Var],
time_variables[Var],time_variables[Var])
print(time_manips)
All help welcome, or if a different approach is better please let me
know
I'd clean up the original code a bit rather than introducing another source
of errors (the regexes):
# no warranties
time_variables = [
(ActivityTime, Activity_Time),
(ExposureTime_Last,Exposure_Time_1)]
time_variables.extend((ExposureTime_Last%d % i, Exposure_Time_%d % i)
for i in range(2, 11))
for key, value in time_variables:
time_manips = COMPUTE %(key)s = SUBSTR(%(key)s
(INDEX(%(key)s,'T'))+1) .
COMPUTE %(value)s = number(%(key)s, TIME8).
VARIABLE LABEL %(value)s.
VARIABLE LEVEL %(value)s (SCALE).
FORMATS %(value)s (TIME8).
VARIABLE WIDTH %(value)s (8).
EXECUTE. % dict(key=key, value=value)
spss.Submit(time_manips)
It might be even better to move the logic into SPSS and to replace the
numerical suffices with array indices (if supported), but I can't help you
with that.
Peter
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Re: for loop question
On Oct 11, 4:40 am, Steven D'Aprano [EMAIL PROTECTED] cybersource.com.au wrote: On Wed, 10 Oct 2007 20:25:00 +, Paul Hankin wrote: A works-for-me: pairs = (test[i:i+2] for i in xrange(len(test)-1)) for a,b in pairs: ... print a,b for a, b in zip(test, test[1:]): print a, b May be unfortunately slow if test is half a gigabyte of data, what with essentially making three copies of it. Lazy procedures like the generator expression above are often much better. Just for completion, here's another way: prev = test[0] for i in xrange(1, len(test)): print prev, test[i] prev = test[i] Why not just: for i in xrange(len(test) - 1): print test[i], test[i + 1] -- Paul Hankin -- http://mail.python.org/mailman/listinfo/python-list
Re: for loop question
Steven D'Aprano [EMAIL PROTECTED] writes: pairs = (test[i:i+2] for i in xrange(len(test)-1)) for a,b in pairs: ... print a,b for a, b in zip(test, test[1:]): print a, b May be unfortunately slow if test is half a gigabyte of data, what with essentially making three copies of it. Lazy procedures like the generator expression above are often much better. Untested: from itertools import izip, islice for a,b in izip(test, islice(test,1,None)): print a,b seems more natural. -- http://mail.python.org/mailman/listinfo/python-list
for loop question
Hi, I'm currently writing my own CSV parser since the built in one doesn't support Unicode. I'm wondering if there's a way to iterate over the characters in a unicode string and have access to both the 'current' and the 'next' characters each iteration. For example: test = uHello World for cur,next in test: print cur,next Ideally, this would output: 'H', 'e' 'e', 'l' 'l', 'l' 'l', 'o' etc... Of course, the for loop above isn't valid at all. I am just giving an example of what I'm trying to accomplish. Anyone know how I can achieve the goal in the example above? Thanks. -- http://mail.python.org/mailman/listinfo/python-list
Re: for loop question
Try this: test = uHello World n = range(len(test)) for i in n: cur = test[i] try: next = test[i+1] except: next = print cur, next just On 10/10/07, Robert Dailey [EMAIL PROTECTED] wrote: Hi, I'm currently writing my own CSV parser since the built in one doesn't support Unicode. I'm wondering if there's a way to iterate over the characters in a unicode string and have access to both the 'current' and the 'next' characters each iteration. For example: test = uHello World for cur,next in test: print cur,next Ideally, this would output: 'H', 'e' 'e', 'l' 'l', 'l' 'l', 'o' etc... Of course, the for loop above isn't valid at all. I am just giving an example of what I'm trying to accomplish. Anyone know how I can achieve the goal in the example above? Thanks. -- http://mail.python.org/mailman/listinfo/python-list -- Rafael Sachetto Oliveira Sir - Simple Image Resizer http://rsachetto.googlepages.com -- http://mail.python.org/mailman/listinfo/python-list
Re: for loop question
test = uHello World for cur,next in test: print cur,next Ideally, this would output: 'H', 'e' 'e', 'l' 'l', 'l' 'l', 'o' etc... Of course, the for loop above isn't valid at all. I am just giving an example of what I'm trying to accomplish. Anyone know how I can achieve the goal in the example above? Thanks. A works-for-me: pairs = (test[i:i+2] for i in xrange(len(test)-1)) for a,b in pairs: ... print a,b ... H e e l l l l o o w w o o r r l l d -tkc -- http://mail.python.org/mailman/listinfo/python-list
Re: for loop question
On Wed, 2007-10-10 at 14:56 -0500, Robert Dailey wrote: Hi, I'm currently writing my own CSV parser since the built in one doesn't support Unicode. Why do you think you need a CSV parser that supports unicode? -- Carsten Haese http://informixdb.sourceforge.net -- http://mail.python.org/mailman/listinfo/python-list
Re: for loop question
On Oct 10, 9:12 pm, Tim Chase [EMAIL PROTECTED] wrote: test = uHello World for cur,next in test: print cur,next Ideally, this would output: 'H', 'e' 'e', 'l' 'l', 'l' 'l', 'o' etc... Of course, the for loop above isn't valid at all. I am just giving an example of what I'm trying to accomplish. Anyone know how I can achieve the goal in the example above? Thanks. A works-for-me: pairs = (test[i:i+2] for i in xrange(len(test)-1)) for a,b in pairs: ... print a,b for a, b in zip(test, test[1:]): print a, b -- Paul Hankin -- http://mail.python.org/mailman/listinfo/python-list
Re: for loop question
All the ideas presented here are workable. I definitely have a lot of solutions to choose from. Thanks everyone for your help. I wasn't sure if there was some sort of language feature to naturally do this, so I had to post on the mailing list to make sure. -- http://mail.python.org/mailman/listinfo/python-list
Re: for loop question
Very nice solution :) On 10/10/07, Paul Hankin [EMAIL PROTECTED] wrote: On Oct 10, 9:12 pm, Tim Chase [EMAIL PROTECTED] wrote: test = uHello World for cur,next in test: print cur,next Ideally, this would output: 'H', 'e' 'e', 'l' 'l', 'l' 'l', 'o' etc... Of course, the for loop above isn't valid at all. I am just giving an example of what I'm trying to accomplish. Anyone know how I can achieve the goal in the example above? Thanks. A works-for-me: pairs = (test[i:i+2] for i in xrange(len(test)-1)) for a,b in pairs: ... print a,b for a, b in zip(test, test[1:]): print a, b -- Paul Hankin -- http://mail.python.org/mailman/listinfo/python-list -- Rafael Sachetto Oliveira Sir - Simple Image Resizer http://rsachetto.googlepages.com -- http://mail.python.org/mailman/listinfo/python-list
Re: for loop question
Paul Hankin wrote: On Oct 10, 9:12 pm, Tim Chase [EMAIL PROTECTED] wrote: pairs = (test[i:i+2] for i in xrange(len(test)-1)) for a,b in pairs: ... print a,b for a, b in zip(test, test[1:]): print a, b Very nice! I second this solution as better than my original. The only improvement (in quotes, because it might be more work/opacity than the problem merits) might be to use izip/islice from itertools to do the evaluation lazily if test gets large: from itertools import izip, islice for a,b in izip(test, islice(test, 1, None)): print a,b [side note/question] What's with islice having the first optional paramenter expand as the stop/third argument by default: islice(test, 1) - stop at 1 islice(test, 1, 2) - start at 1, stop at 2 islice (in python2.4) doesn't even take kword params, so you can't force it like islice(test, start=1) but instead must specify a stop parameter, even if it's None: islice(test, 1, None) Seems bogus, IMHO. -tkc -- http://mail.python.org/mailman/listinfo/python-list
Re: for loop question
On Oct 10, 4:12 pm, Tim Chase [EMAIL PROTECTED] wrote: test = uHello World for cur,next in test: print cur,next Ideally, this would output: 'H', 'e' 'e', 'l' 'l', 'l' 'l', 'o' etc... Of course, the for loop above isn't valid at all. I am just giving an example of what I'm trying to accomplish. Anyone know how I can achieve the goal in the example above? Thanks. A works-for-me: pairs = (test[i:i+2] for i in xrange(len(test)-1)) for a,b in pairs: ... print a,b ... H e e l l l l o o w w o o r r l l d -tkc Or generalized for arbitrary iterables, number of items at a time, combination function and stopping criterion: from itertools import islice, takewhile, repeat def taking(iterable, n, combine=tuple, pred=bool): iterable = iter(iterable) return takewhile(pred, (combine(islice(iterable,n)) for _ in repeat(0))) for p in taking(test,2): print p (u'H', u'e') (u'l', u'l') (u'o', u' ') (u'W', u'o') (u'r', u'l') (u'd',) for p in taking(test,2, combine=''.join): print p He ll o Wo rl d George -- http://mail.python.org/mailman/listinfo/python-list
Re: for loop question
Tim Chase wrote: test = uHello World for cur,next in test: print cur,next Ideally, this would output: 'H', 'e' 'e', 'l' 'l', 'l' 'l', 'o' etc... Of course, the for loop above isn't valid at all. I am just giving an example of what I'm trying to accomplish. Anyone know how I can achieve the goal in the example above? Thanks. A works-for-me: pairs = (test[i:i+2] for i in xrange(len(test)-1)) for a,b in pairs: ... print a,b ... H e e l l l l o o w w o o r r l l d -tkc import itertools test = uHello World ltest=['%s' % c for c in test] for a, b in itertools.izip(ltest, ltest[1:]): print x, y 'H' 'e' 'e' 'l' 'l' 'l' 'l' 'o' 'o' ' ' ' ' 'W' 'W' 'o' 'o' 'r' 'r' 'l' 'l' 'd' -Larry -- http://mail.python.org/mailman/listinfo/python-list
Re: for loop question
I've tried everything to make the original CSV module work. It just doesn't. I've tried UTF-16 encoding (which works fine with codecs.open()) but when I pass in the file object returned from codecs.open() into csv.reader(), the call to reader.next() fails because it says something isnt' in the range of range(128) or something (Not really an expert on Unicode so I'm not sure of the meaning). I would use CSV if I could! On 10/10/07, Carsten Haese [EMAIL PROTECTED] wrote: On Wed, 2007-10-10 at 15:27 -0500, Robert Dailey wrote: I'm using CSV for localization in a game I'm involved with. That doesn't tell me why you think you need a CSV parser that supports Unicode. There is no such thing as a Unicode file. The file contains a stream of octets that represent some encoding of Unicode code points. If the encoding is chosen properly, such as UTF-8, the standard CSV parser should be able to parse the resulting stream. -Carsten -- http://mail.python.org/mailman/listinfo/python-list
Re: for loop question
On Wed, 2007-10-10 at 16:03 -0500, Robert Dailey wrote: I've tried everything to make the original CSV module work. It just doesn't. I've tried UTF-16 encoding What do you mean, tried? Don't you know what the file is encoded in? (which works fine with codecs.open()) but when I pass in the file object returned from codecs.open() into csv.reader(), the call to reader.next() fails because it says something isnt' in the range of range(128) or something (Not really an expert on Unicode so I'm not sure of the meaning). I would use CSV if I could! That's because the codec-file object feeds it decoded Unicode strings, but the CSV module wants to work with encoded octet strings, so it tries to encode the unicode string with the default codec. The default codec is ASCII, which can't represent characters with code points greater than 127. Instead of passing the file object directly to the csv parser, pass in a generator that reads from the file and explicitly encodes the strings into UTF-8, along these lines: def encode_to_utf8(f): for line in f: yield line.encode(utf-8) There may be a fundamental problem with this approach that I can't foresee at the moment, but it's worth a try when your alternative is to build a Unicode-aware CSV parser from scratch. Hope this helps, -- Carsten Haese http://informixdb.sourceforge.net -- http://mail.python.org/mailman/listinfo/python-list
Re: for loop question
On 10/10/07, Carsten Haese [EMAIL PROTECTED] wrote: Instead of passing the file object directly to the csv parser, pass in a generator that reads from the file and explicitly encodes the strings into UTF-8, along these lines: def encode_to_utf8(f): for line in f: yield line.encode(utf-8) There may be a fundamental problem with this approach that I can't foresee at the moment, but it's worth a try when your alternative is to build a Unicode-aware CSV parser from scratch. Hope this helps, I did the following: # def encode_utf8( f ): for line in f: yield line.encode( utf-8 ) # def BeginLocalizationParsing( outputDir, inputRoot, inputFile ): f = codecs.open( inputFile, rb, encoding=utf-16 ) r = csv.reader( encode_utf8( f ) ) print r.next() # It worked perfectly! Thank you! I guess I don't have to make a CSV parser after all :P -- http://mail.python.org/mailman/listinfo/python-list
Re: for loop question
On Wed, 10 Oct 2007 20:25:00 +, Paul Hankin wrote: A works-for-me: pairs = (test[i:i+2] for i in xrange(len(test)-1)) for a,b in pairs: ... print a,b for a, b in zip(test, test[1:]): print a, b May be unfortunately slow if test is half a gigabyte of data, what with essentially making three copies of it. Lazy procedures like the generator expression above are often much better. Just for completion, here's another way: prev = test[0] for i in xrange(1, len(test)): print prev, test[i] prev = test[i] -- Steven. -- http://mail.python.org/mailman/listinfo/python-list
Re: Tkinter, main loop question.
Exod wrote: Don't know if its possible in this light-weight GUI toolset, but can i somehow hook up into the mainloop in it, for example if i were to create an internet application, i would need to keep recieving data from within it? That's something where you could try the Twisted framework (http://twistedmatrix.com). Its event loop integrates with many GUI toolkits', also Tk's. Regards, Björn -- BOFH excuse #394: Jupiter is aligned with Mars. -- http://mail.python.org/mailman/listinfo/python-list
Tkinter, main loop question.
Don't know if its possible in this light-weight GUI toolset, but can i somehow hook up into the mainloop in it, for example if i were to create an internet application, i would need to keep recieving data from within it? -- http://mail.python.org/mailman/listinfo/python-list
for loop question
hi.. basic foor/loop question.. i can do: for a in foo print a if i want to do something like for a, 2, foo print foo where go from 2, to foo.. i can't figure out how to accomplish this... can someone point me to how/where this is demonstrated... found plenty of google for for/loop.. just not this issue.. thanks -bruce -- http://mail.python.org/mailman/listinfo/python-list
Re: for loop question
On 7/6/06, bruce [EMAIL PROTECTED] wrote: hi..basic foor/loop question..i can do: for a in fooprint aif i want to do something likefor a, 2, fooprint foowhere go from 2, to foo..i can't figure out how to accomplish this... can someone point me to how/where this is demonstrated...You might want to look here:http://www.freenetpages.co.uk/hp/alan.gauld/tutloops.htm I am not exactly sure what you are asking, so perhaps a hopefully related example will help you on your way.Let's say you have a variable foo and want to count from 2 to the value of foo, you could do the following: foo = 20for i in range(2,foo): print iThis would print the numbers 2 through 29 out.Hope this helps.Preston -- http://mail.python.org/mailman/listinfo/python-list
Re: for loop question
just do: for a in range(2, foo+1): print a range(a, b) gives [a, a+1, a+2, ..., b-2, b-1] bruce schrieb: hi.. basic foor/loop question.. i can do: for a in foo print a if i want to do something like for a, 2, foo print foo where go from 2, to foo.. i can't figure out how to accomplish this... can someone point me to how/where this is demonstrated... found plenty of google for for/loop.. just not this issue.. thanks -bruce -- http://mail.python.org/mailman/listinfo/python-list
RE: for loop question
'ppreaciate the answers duh... -bruce -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Daniel Haus Sent: Thursday, July 06, 2006 2:02 PM To: python-list@python.org Subject: Re: for loop question just do: for a in range(2, foo+1): print a range(a, b) gives [a, a+1, a+2, ..., b-2, b-1] bruce schrieb: hi.. basic foor/loop question.. i can do: for a in foo print a if i want to do something like for a, 2, foo print foo where go from 2, to foo.. i can't figure out how to accomplish this... can someone point me to how/where this is demonstrated... found plenty of google for for/loop.. just not this issue.. thanks -bruce -- http://mail.python.org/mailman/listinfo/python-list -- http://mail.python.org/mailman/listinfo/python-list
Re: for loop question
On 2006-07-06, Daniel Haus [EMAIL PROTECTED] wrote: i can do: for a in foo print a if i want to do something like for a, 2, foo print foo where go from 2, to foo.. just do: for a in range(2, foo+1): print a Except that in the OP's example foo was a sequence, not an integer. I think. -- Grant Edwards grante Yow! You can't hurt at me!! I have an ASSUMABLE visi.comMORTGAGE!! -- http://mail.python.org/mailman/listinfo/python-list
Re: for loop question
Except that in the OP's example foo was a sequence, not an integer. I think. Yes, possibly. But then, what's from 2 to foo? this way it might be for a in [2] + foo: print a -- http://mail.python.org/mailman/listinfo/python-list
Re: for loop question
for a in range(2, len(foo)): print a or maybe you need for a in range(1, len(foo)): print a ? York bruce wrote: hi.. basic foor/loop question.. i can do: for a in foo print a if i want to do something like for a, 2, foo print foo where go from 2, to foo.. i can't figure out how to accomplish this... can someone point me to how/where this is demonstrated... found plenty of google for for/loop.. just not this issue.. thanks -bruce -- http://mail.python.org/mailman/listinfo/python-list
Asyncore Loop Question
Hello, I have a gui application where I am trying to use the asyncore module to gather data from other computers. I am able to connect, but I am getting constant handle_write_event method calls into my application. It is obviously slowing down the gui processing significantly. My understanding is that the handle_write_event and handle_read_event are both edge notifications and I should just get the method call essentially just once. I think the problem is how I have my loop() call configured. All I am trying to do with the code below is to open the socket (that works) and then receive a single handle_write_event method call. Instead, I am getting constantly barraged with them. I have tried several different types of the loop() call (using poll, timeout...) but with no luck. If anyone can explain what I should be doing to get a single handle_write_event call until I actually write something to the socket (which my code is not presently doing yet), I would appreciate Below is some code showing what I am doing: -- class Connection(asyncore.dispatcher): def __init__ (self, server_name, port_num ): self.message_queue = [] asyncore.dispatcher.__init__(self) self.create_socket( socket.AF_INET, socket.SOCK_STREAM ) self.connect(( server_name, port_num )) def handle_read_event( self ): print handle_read_event received def handle_write_event( self ): print Asking for a write if len( self.message_queue ) 0: # Pop the first message off the queue self.send_next_message() class TestApp: def __init__( self, server_name, port_number ): self.nomad = Connection( server_name, port_number ) asyncore.loop() Output ends up being a constant stream of: Asking for a write Asking for a write Asking for a write Asking for a write Asking for a write ... ... -- http://mail.python.org/mailman/listinfo/python-list
Re: Asyncore Loop Question
John W wrote: Hello, I have a gui application where I am trying to use the asyncore module to gather data from other computers. I am able to connect, but I am getting constant handle_write_event method calls into my application. It is obviously slowing down the gui processing significantly. My understanding is that the handle_write_event and handle_read_event are both edge notifications and I should just get the method call essentially just once. I think the problem is how I have my loop() call configured. All I am trying to do with the code below is to open the socket (that works) and then receive a single handle_write_event method call. Instead, I am getting constantly barraged with them. I have tried several different types of the loop() call (using poll, timeout...) but with no luck. If anyone can explain what I should be doing to get a single handle_write_event call until I actually write something to the socket (which my code is not presently doing yet), I would appreciate Below is some code showing what I am doing: -- class Connection(asyncore.dispatcher): def __init__ (self, server_name, port_num ): self.message_queue = [] asyncore.dispatcher.__init__(self) self.create_socket( socket.AF_INET, socket.SOCK_STREAM ) self.connect(( server_name, port_num )) def handle_read_event( self ): print handle_read_event received def handle_write_event( self ): print Asking for a write if len( self.message_queue ) 0: # Pop the first message off the queue self.send_next_message() class TestApp: def __init__( self, server_name, port_number ): self.nomad = Connection( server_name, port_number ) asyncore.loop() Output ends up being a constant stream of: Asking for a write Asking for a write Asking for a write Asking for a write Asking for a write ... ... Normally if a socket channel asks for a write and you have no data you should respond by removing it from the list of write-enabled channels for the asyncore loop until you *do* have some data for it. Otherwise every time the loop scans the channels expecting notification it will tell you again that you can write to that channel. regards Steve -- Steve Holden +44 150 684 7255 +1 800 494 3119 Holden Web LLC www.holdenweb.com PyCon TX 2006 www.python.org/pycon/ -- http://mail.python.org/mailman/listinfo/python-list
Re: Asyncore Loop Question
Steve, Ar you saying that I should close the connection until I have data to write? Or should I be using the readable and writable methods to turn it off? Thanks for your help, unfortunatly, I have struggled with the documentation and getting a clear understanding of everything. This is my first socket program as well. Thanks, JohnOn 10/31/05, Steve Holden [EMAIL PROTECTED] wrote: John W wrote: Hello, I have a gui application where I am trying to use the asyncore module to gather data from other computers. I am able to connect, but I am getting constant handle_write_event method calls into my application. It is obviously slowing down the gui processing significantly. My understanding is that the handle_write_event and handle_read_event are both edge notifications and I should just get the method call essentially just once. I think the problem is how I have my loop() call configured. All I am trying to do with the code below is to open the socket (that works) and then receive a single handle_write_event method call. Instead, I am getting constantly barraged with them. I have tried several different types of the loop() call (using poll, timeout...) but with no luck. If anyone can explain what I should be doing to get a single handle_write_event call until I actually write something to the socket (which my code is not presently doing yet), I would appreciate Below is some code showing what I am doing: -- class Connection(asyncore.dispatcher): def __init__ (self, server_name, port_num ): self.message_queue = [] asyncore.dispatcher.__init__(self) self.create_socket( socket.AF_INET , socket.SOCK_STREAM ) self.connect(( server_name, port_num )) def handle_read_event( self ): print handle_read_event received def handle_write_event( self ): print Asking for a write if len( self.message_queue ) 0: # Pop the first message off the queue self.send_next_message() class TestApp: def __init__( self, server_name, port_number ): self.nomad = Connection( server_name, port_number ) asyncore.loop() Output ends up being a constant stream of: Asking for a write Asking for a write Asking for a write Asking for a write Asking for a write ... ...Normally if a socket channel asks for a write and you have no data youshould respond by removing it from the list of write-enabled channels for the asyncore loop until you *do* have some data for it. Otherwiseevery time the loop scans the channels expecting notification it willtell you again that you can write to that channel.regardsSteve --Steve Holden +44 150 684 7255+1 800 494 3119Holden Web LLC www.holdenweb.comPyCon TX 2006www.python.org/pycon/--http://mail.python.org/mailman/listinfo/python-list -- http://mail.python.org/mailman/listinfo/python-list
Re: Asyncore Loop Question
John W wrote: On 10/31/05, Steve Holden [EMAIL PROTECTED] wrote: John W wrote: Hello, I have a gui application where I am trying to use the asyncore module to gather data from other computers. I am able to connect, but I am getting constant handle_write_event method calls into my application. It is obviously slowing down the gui processing significantly. My understanding is that the handle_write_event and handle_read_event are both edge notifications and I should just get the method call essentially just once. I think the problem is how I have my loop() call configured. All I am trying to do with the code below is to open the socket (that works) and then receive a single handle_write_event method call. Instead, I am getting constantly barraged with them. I have tried several different types of the loop() call (using poll, timeout...) but with no luck. If anyone can explain what I should be doing to get a single handle_write_event call until I actually write something to the socket (which my code is not presently doing yet), I would appreciate Below is some code showing what I am doing: -- class Connection(asyncore.dispatcher): def __init__ (self, server_name, port_num ): self.message_queue = [] asyncore.dispatcher.__init__(self) self.create_socket( socket.AF_INET, socket.SOCK_STREAM ) self.connect(( server_name, port_num )) def handle_read_event( self ): print handle_read_event received def handle_write_event( self ): print Asking for a write if len( self.message_queue ) 0: # Pop the first message off the queue self.send_next_message() class TestApp: def __init__( self, server_name, port_number ): self.nomad = Connection( server_name, port_number ) asyncore.loop() Output ends up being a constant stream of: Asking for a write Asking for a write Asking for a write Asking for a write Asking for a write ... ... Normally if a socket channel asks for a write and you have no data you should respond by removing it from the list of write-enabled channels for the asyncore loop until you *do* have some data for it. Otherwise every time the loop scans the channels expecting notification it will tell you again that you can write to that channel. Steve, Ar you saying that I should close the connection until I have data to write? Or should I be using the readable and writable methods to turn it off? Thanks for your help, unfortunatly, I have struggled with the documentation and getting a clear understanding of everything. This is my first socket program as well. I was actually mis-remembering my asyncore documentation, which is a little sad given that I wrote it :-) What you need is to implement a writable() method. Suppose your output generation creates a buffer is self.buffer, a suitable implementation would look like this: def writable(self): return (len(self.buffer) 0) As I wrote in the documentation: writable( ) Called each time around the asynchronous loop to determine whether a channel's socket should be added to the list on which write events can occur. The default method simply returns True, indicating that by default, all channels will be interested in write events. regards Steve -- Steve Holden +44 150 684 7255 +1 800 494 3119 Holden Web LLC www.holdenweb.com PyCon TX 2006 www.python.org/pycon/ -- http://mail.python.org/mailman/listinfo/python-list
