🌐 Mailman 3 August 2004 - Python-list - python.org

Re: Crypto.PublicKey.RSA.error: Plaintext too large
by Peter Hansen Aug. 3, 2004

Aug. 3, 2004

Ajay Brar wrote: > I am getting an error - Crypto.PublicKey.RSA.error: Plaintext too large > - when verifying the signature of a document. > What i am doing is - the document and the signature are downloaded off > the net, my verify script then connects to a server and obtains a public > key. It then uses the public key to verify the signature. > The whole thing works fine when i do the same thing in the interactive > interpreter. Its only when i download the files and obtain the public > key from the server and then verify, that i get the above error. > > any suggesstions...ideas??? Carriage Return/Line Feed problems? Or trailing newline problems? -Peter

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intersection of 2 strings
by al＠biolinux.ch Aug. 3, 2004

Aug. 3, 2004

Hi, What is the easiest way to get the intersection of two strings in python (a kind a "and" operator) ? ex: string_1 = "the_car_of_my_fried_is_bigger_as_mine_but_my_girlfriend_is_more_beautifull" string_2 = "my_girlfriend_is_more_beautifull_and_has_blue_eyes" and the intersection : string_1 "and" string_2 = "my_girlfriend_is_more_beautifull" thanks for your help Antoine

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executing python programs as if they were on OS path (noob)
by Darren Dale Aug. 3, 2004

Aug. 3, 2004

Is there a place to put python programs so I dont have to refer to the absolute path everytime I want to call them? For example: if I am in /home/me and want to execute: python /home/me/python/export.py temp.dat what could I do so this will work: python export.py temp.dat Thanks, Darren

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Modern dead-tree Python resources
by Michael Ekstrand Aug. 3, 2004

Aug. 3, 2004

I'm sitting here looking at my copy of David Beazley's Python Essential Reference, which I find wonderful, but am lamenting that it only covers through Python 1.5.2. And I see that the 2nd edition covers through Python 2.1. Is there a good book that covers Python at least through 2.2 (including new-style classes, etc.)? I'm particularly looking for something with large appendices of reference material. (alternatively, if someone's publishing print versions of the Python documentation, that would possibly be of interest. I know I saw some for Python 1.5 or 1.6 in a used bookstore, but don't recall who published them.) TIA, Michael

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Re: Timing Difference: insert vs. append & reverse
by johnfkeeling＠yahoo.com Aug. 3, 2004

Aug. 3, 2004

It is so cool to be able to get the disassembly so easily.... thanks v. much Terry. Cheers, John > >>> import dis > >>> dis.dis(ldel) > 0 SET_LINENO 1 > > 3 SET_LINENO 2 > 6 LOAD_FAST 0 (lisp) > 9 LOAD_FAST 1 (index) > 12 DELETE_SUBSCR > 13 LOAD_CONST 0 (None) > 16 RETURN_VALUE

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Re: simple Thread question
by Christopher T King Aug. 3, 2004

Aug. 3, 2004

On Tue, 3 Aug 2004, Dave Brueck wrote: > Er... you're jumping the gun a bit - no need to scare the OP away from > threads with all these details about the GIL when the problem was simply > that the threads were never started. > > [snip] > > Because of the former property, another thing you can try is > > inserting a time.sleep(.1) inside of each loop > > Uh, did you read his code before responding? (hint: he's already doing > that) :) Wow, I really screwed that up :P I really should stop posting to this list in a hurry. My eyes glanced at the short loop, the thread-starting code (didn't notice the .run() instead of .start()), and the output, and concluded "GIL funkiness" (something I've been hit with before). FWIW, replacing .run() with .start() (and dropping name from .run()) and dropping the sleep() produces the same symptoms the OP was showing.

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RE: simple Thread question
by Batista, Facundo Aug. 3, 2004

Aug. 3, 2004

Look at start() method of threading.Thread. . Facundo #- -----Mensaje original----- #- De: adeger(a)netlibrary.com [mailto:adeger@netlibrary.com] #- Enviado el: Martes, 03 de Agosto de 2004 16:52 #- Para: python-list(a)python.org #- Asunto: simple Thread question #- #- #- Having trouble with my first forays into threads. Basically, the #- threads don't seem to be working in parallel (or you might say are #- blocking). I've boiled my problems to the following short code block #- and ensuing output. Seems like the output should be all interleaved #- and of course it's not. Running Python 2.2 from ActiveState on #- Windows XP (also doesn't work on Windows 2000). #- #- Thanks in advance! #- adeger #- #- #==================================================== #- #- import threading #- #- class TestThr(threading.Thread): #- def __init__(self): #- threading.Thread.__init__(self) #- #- def run(self, name): #- import time #- for i in range(1,11): #- print 'thread ', name, ' instance ', str(i) #- time.sleep(1) #- #- threads = [] #- for inst in ('a', 'b', 'c'): #- thread = TestThr() #- thread.run(inst) #- threads.append(thread) #- #- # output below #- thread a instance 1 #- thread a instance 2 #- thread a instance 3 #- thread a instance 4 #- thread a instance 5 #- thread a instance 6 #- thread a instance 7 #- thread a instance 8 #- thread a instance 9 #- thread a instance 10 #- thread b instance 1 #- thread b instance 2 #- thread b instance 3 #- thread b instance 4 #- thread b instance 5 #- thread b instance 6 #- thread b instance 7 #- thread b instance 8 #- thread b instance 9 #- thread b instance 10 #- thread c instance 1 #- thread c instance 2 #- thread c instance 3 #- thread c instance 4 #- thread c instance 5 #- thread c instance 6 #- thread c instance 7 #- thread c instance 8 #- thread c instance 9 #- thread c instance 10 #- -- #- http://mail.python.org/mailman/listinfo/python-list #- . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ADVERTENCIA La información contenida en este mensaje y cualquier archivo anexo al mismo, son para uso exclusivo del destinatario y pueden contener información confidencial o propietaria, cuya divulgación es sancionada por la ley. Si Ud. No es uno de los destinatarios consignados o la persona responsable de hacer llegar este mensaje a los destinatarios consignados, no está autorizado a divulgar, copiar, distribuir o retener información (o parte de ella) contenida en este mensaje. Por favor notifíquenos respondiendo al remitente, borre el mensaje original y borre las copias (impresas o grabadas en cualquier medio magnético) que pueda haber realizado del mismo. Todas las opiniones contenidas en este mail son propias del autor del mensaje y no necesariamente coinciden con las de Telefónica Comunicaciones Personales S.A. o alguna empresa asociada. Los mensajes electrónicos pueden ser alterados, motivo por el cual Telefónica Comunicaciones Personales S.A. no aceptará ninguna obligación cualquiera sea el resultante de este mensaje. Muchas Gracias.

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Python executable on Windows
by Simon Faulkner Aug. 3, 2004

Aug. 3, 2004

Hi All, I've written a fair bit of simple Python for Linux and have been asked to write a program for win32. Is it possible to write a program and add the Python interpreter so that I just end up with a single .exe file for windows? I know that it will be large but it will be simple! TIA Simon

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Newbie: pywin problem
by Martin DeMello Aug. 3, 2004

Aug. 3, 2004

Here's a transcript: >>> import win32ui >>> template = pywin.mfc.docview.DocTemplate(None) >>> doc = pywin.scintilla.document.CScintillaDocument(template) >>> view = pywin.scintilla.view.CScintillaView(doc) >>> fr = win32ui.GetMainFrame() >>> view.CreateWindow(fr) Now how do I get the window to display? I thought the call to CreateWindow would do it, but the window just gets created silently. martin

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Re: how to do proper subclassing?
by Christopher T King Aug. 3, 2004

Aug. 3, 2004

On Tue, 3 Aug 2004, [iso-8859-1] Jonas Koelker wrote: > I'm new to this list (/me welcomes himself). Welcome! > However, I want the permutation to act like a list, in > all those cases where I don't override the operations. > For example, assuming permfooation is the above > permutation [1 3 4 0 2], permfooation[1:3] should > return [3,4]. How is this done? Do I have to actually > implement a slice-mechanism in the permutation class? I'm not sure exactly how your permutation class is implemented, so I can't give you a precise answer, but in general, there are three ways to do this, each method having benefits and drawbacks: 1) Implement your class as a subclass of list. Using this method, your class would store its list data in itself (in self, actually), since it is effectively a list. The __getitem__ method needed to implement slicing will be inherited from list, and no further work will need to be done. This method works best if you're only altering the behaviour of a list slightly (e.g. transforming all items in a particular way), but may not be well suited to objects that shouldn't otherwise act like lists. 2) Store your data in a list, and delegate __getitem__. Using this method, your class would store its list data in an attribute (say self.data). To implement slicing, you can simply define your class's __getitem__ method like this: def __getitem__(self,i): return self.data[i] assuming self.data contains the list data to which you want to provide access. This is the easiest method if all you want to implement is slicing. 3) Implement __getitem__ yourself. You should only need to do this if the data you want to slice is not available in a readily slicable form (perhaps you generate it on the fly). Implementing __getitem__ is easy; here is a general template you can use: def __getitem__(self,i): if isinstance(i,slice): return self.make_a_slice_and_return_a_list(i.start,i.stop,i.step) else: return self.get_an_item_at_index(i) __getitem__ is passed either a slice object (in the case of slicing) or an integer (in the case of indexing). The start, stop, and step attributes of the slice object return what you'd expect, or None if they weren't specified. The method slice.indices(length) will compute "actual" slice indices for a sequence of the given length in the case of missing, negative, or out-of-bounds indices, returning a tuple (start, stop, stride). Hope this helps.

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