Re: how to call a function for evry 10 secs
from threading import Timer def Func_to_call: do_stuff() my_timer = Timer(10, Func_to_call) my_timer.start() -- http://mail.python.org/mailman/listinfo/python-list
Re: How to timeout when waiting for raw_input from user ?
On Dec 5, 3:42 pm, Maxim Khitrov mkhit...@gmail.com wrote:
I'm not talking about the Timer, I'm talking about the original
question. There's nothing (that I know of) you can do with a Timer on
Windows to interrupt a raw_input call.
That is true. But if the issue here is to present a question, and
await answer for N seconds, before pusing next question, Timer() can
be used to call SendKeys() and have it send {ENTER} to raw_input.
http://www.rutherfurd.net/python/sendkeys/index.html
SendKeys is Win-only
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Re: How to timeout when waiting for raw_input from user ?
The easiest wasy is to use the Timer object in the threading module. from threading import Timer -- http://mail.python.org/mailman/listinfo/python-list
Re: How to timeout when waiting for raw_input from user ?
On Dec 5, 3:07 pm, Maxim Khitrov mkhit...@gmail.com wrote: Doesn't work on Windows. - Max Yes, it does. I've used it a lot, also in Py2Exe apps. Try the documentation example yourself def hello(): print hello, world t = Timer(30.0, hello) t.start() # after 30 seconds, hello, world will be printed -- http://mail.python.org/mailman/listinfo/python-list
Re: How is GUI programming in Python?
On Apr 10, 3:54 am, Chris Stewart [EMAIL PROTECTED] wrote: ... Next, what would you say is the best framework I should look into? I'm curious to hear opinions on that. GUI-programming in Python is a neanderthal experience. What one may love with console scripts is turned upside-down. Projects like Boa Constructor seemed to be a remedy, but is not developed. The Iron- Pythonistas has a very promising RAD GUI-tool in the IronPython - Studio, http://www.codeplex.com/IronPythonStudio - but if you're non- Iron, only sorrow is left - unless you fancy creating GUI in a text- editor. Something I consider waste of life. -- http://mail.python.org/mailman/listinfo/python-list
Re: How is GUI programming in Python?
On Apr 11, 8:35 pm, Steve Holden [EMAIL PROTECTED] wrote: wxDesigner. Yeah, but it's like Heron of Alexandria's Aeolipile compared to the steam engine of James Watt. IMHO, GUI with Python is pain, pain and utter pain. Even boring and meaningless pain. -- http://mail.python.org/mailman/listinfo/python-list
Re: How is GUI programming in Python?
On Apr 12, 12:03 am, Michel Bouwmans [EMAIL PROTECTED] wrote: Qt Designer. And creating the GUI yourself in the text editor isn't that bad, plus you have much better control over it. If you like designing isual elements in an editor, that's fine for me! I don't, And as I don't do it all the time, I tend to forget constructional details and waste life googling. So for me it's pain without cognition. AKA waste of life. Numerous RAD' env's, fx Delphi, suggests this kind of incredibly boring almost pre-historic, self-pestering non-sense pain is ancient, and I happen to agree. It's an orthodox and monkish way of programming. Some like it that way and that's none of my business. I don't like it that way. Designing GUI in a text-editor (for me) always produce a : good enough and consumes a lot of life. The Boa constructor / Delphi way produce what I want without _wasting life_. But Boa is too unstable, and does not claim otherwise, and there's no descent alternative I'm aware of. So, GUI Python still sucks far too much. Console and web Python indeed does not. So if the Python Foundation arrange a Descent RAD effort, I'll happily donate $100 for starters. I think Python should be just as easily GUI'able as it is Console'able. Python is soon 20 years old! -- http://mail.python.org/mailman/listinfo/python-list
Re: Ping and ARP on both Win and Linux in Python
On Mar 13, 9:14 pm, Mauro \Baba\ Mascia [EMAIL PROTECTED] wrote: Hi, this is my question: I want to know if several switch (about 50) in a big lan are up and then know their MAC addresses to do a list that contains host name, ip and mac. I know only the range of their IP addresses (the host name it's simply to know using socket.gethostn. The first idea it's to ping all ip, parse the response and then execute the command arp -a and parse the response. However this way depends on the operating system and the ping response depends too from the language. Another way it's to open the main page of the switch and parse the HTML code where i can find the MAC address. However this way depends on the particular brand's switch. I know (or better i think) that there is a third way: make ping and arp building the packets with socket and so on (but i dont have understand in what way do this). Any suggestion? (i've already search in google, found many sources but a lot of them don't works or don't do what im trying to do...) Regards, Mauretto. There are several Ping /ICMP implentations in Python. I did something similar using a python ping module and parsing the arp cache. A different approach may be to use SNMP. I believe there are Python tools around. -- http://mail.python.org/mailman/listinfo/python-list
Re: How to test if a key in a dictionary exists?
Yes, you have name.has_key(name_key) and perhaps better, the in operator: if name_key in name: do something -- http://mail.python.org/mailman/listinfo/python-list
Re: Reading a portion of a file
On Mar 8, 5:12 pm, [EMAIL PROTECTED] wrote: I am using a script with a single file containing all data in multiple sections. Each section begins with #VS:CMD:command:START and ends with #VS:CMD:command:STOP. There is a blank line in between each section. I'm looking for the best way to grab one section at a time. Will I have to read the entire file to a string and parse it further or is it possible to grab the section directly when doing a read? I'm guessing regex is the best possible way. Any help is greatly appreciated. Seems like something along these line will do: _file_ = filepart.txt begin_tag = '#VS:CMD:command:START' end_tag = '#VS:CMD:command:STOP' sections = [] new_section = [] for line in open(_file_): line = line.strip() if begin_tag in line: new_section = [] elif end_tag in line: sections.append(new_section) else: if line: new_section.append(line) for s in sections: print s If your want more control, perhaps flagging inside_section, outside_section is an idea. -- http://mail.python.org/mailman/listinfo/python-list
Re: Referencing Items in a List of Tuples
On Feb 25, 3:01 am, [EMAIL PROTECTED] wrote: In my case, I have a list of 9 tuples. Each tuple has 30 items. The first two items are 3-character strings, the remaining 28 itmes are floats. I want to create a new list from each tuple. But, I want the selection of tuples, and their assignment to the new list, to be based on the values of the first two items in each tuple. If I try, for example, writing: for item in mainlist: if mainlist[item][0] == 'eco' and mainlist[item][1] == 'con': ec.Append(mainlist[item][2:]) python doesn't like a non-numeric index. try this instead: for item in mainlist: if item[0] == 'eco' and item[1] == 'con': ec.append(item[2:]) if you want numeric adressing, try: for i in range(len(mainlist)): if mainlist[i][0] == 'eco' etc. -- http://mail.python.org/mailman/listinfo/python-list
Re: replacing substrings within strings
On Feb 14, 1:08 pm, amadain [EMAIL PROTECTED] wrote: I was wondering if there was a nicer way to swap the first 2 characters in a string with the 4th and 5th characters other than: darr=list(010203040506) aarr=darr[:2] barr=darr[4:6] darr[:2]=barr darr[4:6]=aarr result=.join(darr) The above code works fine but I was wondering if anybody had another way of doing this? Assuming the string length is always at least 5: def swap(s): return '%s%s%s%s' % (s[3:6], s[2:3], s[:2], s[6:]) -- http://mail.python.org/mailman/listinfo/python-list
Re: replacing substrings within strings
Or, slighly slower, but more general: def swap(s, order=(3,4,2,0,1)): # assert len(s) = len(order) return ''.join([s[o] for o in order]) + s[6:] -- http://mail.python.org/mailman/listinfo/python-list
Re: rot13 in a more Pythonic style?
You could try some_string.encode('rot_13')
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Re: urllib2 on Windows Vista
Sriram Krishnan wrote: I'm running Python 2.4.3 on Windows Vista June CTP. I'm not able to open any site using the urllib2 and related family of modules My wil guess is that it is a firewall problem. Perhaps you'll have to specify that python.exe is trusted. -- http://mail.python.org/mailman/listinfo/python-list
Re: Module for creating a screenshot of a web page given a URL?
[EMAIL PROTECTED] wrote: Is there a Python module that, given a URL, will grab a screenshot of the web page it goes to? I'd like to be able to feed such a module a list of URLs from a file. Thanks very much. Not as I know of, but it's easy to write Something like this quasi-code: import time,webbrowser from PIL import ImageGrab list_of_urls = [''http://www.google.com', 'http://www.egg.net'] for url in list_of_urls: webbrowser.open(url) time.sleep(5) # wait for it to load screen = ImageGrab.grab(coords etc) screen.save(some_name_in_some_path) Untestetd, but I'm pretty sure something like this will do. If you need more control, and on windows, try pywinauto -- http://mail.python.org/mailman/listinfo/python-list
Re: built in zip function speed
itertools.izip is usually faster than zip. You can try that. -- http://mail.python.org/mailman/listinfo/python-list
Re: built in zip function speed
so fastest overall you may experience speed-ups by using from itertools import izip and just use izip() instead to avoid the module namespace lookup. The same applies for the list.append() methods. If you're appending some million times a_list = [] a_list_append = a_list.append a_list_append(value) will be faster than a_list.append(value) but not much. -- http://mail.python.org/mailman/listinfo/python-list
Re: Time out question
Grant Edwards wrote: I just use signal.alarm(): import signal,sys def alarmHandler(signum, frame): raise 'Timeout' signal.signal(signal.SIGALRM, alarmHandler) while 1: try: signal.alarm(5) t = sys.stdin.readline() signal.alarm(0) print t except 'Timeout': print too slow -- Very nice, but UNIX only. -- http://mail.python.org/mailman/listinfo/python-list
Re: ascii character - removing chars from string
bruce wrote: hi... i'm running into a problem where i'm seeing non-ascii chars in the parsing i'm doing. in looking through various docs, i can't find functions to remove/restrict strings to valid ascii chars. i'm assuming python has something like valid_str = strip(invalid_str) where 'strip' removes/strips out the invalid chars... any ideas/thoughts/pointers... If you're able to define the invalid_chars, the most convenient is probably to use the strip() method: a_string = abcdef invalid_chars = 'abc' a_string.strip(invalid_chars) 'def' -- http://mail.python.org/mailman/listinfo/python-list
Re: Beginner Programmer Question
I am doing alot of reading, and the problem didnt come with an answer. I dont understand how to get it to continually input numbers and add all those together Use while, raw_input, sys.argv[1] and int() and break the loop when the sum is above 100. ;-) -- http://mail.python.org/mailman/listinfo/python-list
Re: Beginner Programmer Question
[EMAIL PROTECTED] wrote: Rune Strand wrote: I am doing alot of reading, and the problem didnt come with an answer. I dont understand how to get it to continually input numbers and add all those together Use while, raw_input, sys.argv[1] and int() and break the loop when the sum is above 100. ;-) thanks for the help..but i am extremley new and what you said makes no sense to me In the code you posted above here: Move the input into the while loop. You may prefer raw_input() to input(). I don't want to write the code for you ;-) -- http://mail.python.org/mailman/listinfo/python-list
Re: Tetris
Devon G. Parks wrote: I've been searching google and this group for a while now for a good tutorial on making a Tetris-style game in Python. I hear Tetris is a good starting point, and although I am fairly new to programming I think I would learn best if I had some code to experiment with because without a tutorial I have no idea where to start. If you know of a tutorial that is specific to this game please let me know where to find it. There's a 600-liners here: http://www.pygame.org/projects/21/133/ Not a tutorial, but maybe just as good? -- http://mail.python.org/mailman/listinfo/python-list
Re: Python is fun (useless social thread) ;-)
In 2002, I was in need of a multi-platform language. My choice became Python, in spite of friends fiercly defending Perl and some interesting Slashdot-articles on Ruby. But back on university, I met a very, very pretty C++ girl who said many favourable things about Python. She never became mine, but the sympathy for Python that she implanted in my mind, turned out to make me immune against the Perl propaganda. So Python (for me) could be said to be either a substitute for the prettiest of the (many) pretty girls of Norway or a mindchild of the same. I found a script demonstrating search/replace in files. And even if I hadn't coded in a year, I found Python surprisingly easy to read, understand and change. So there I was. Did you have to learn it for a job? No, but I use it as often as possible in work contexts. Or did you just like what you saw and decided to learn it for fun? That's more like it. Also, how did you go about learning it? I ported som other scripts (Bash, PHP, and DOS bat-files) to Python while searching the net each time I became lost. Porting is a good learning method. Was there any necessity in the specifics you learned, or did you just dabble in something (e.g. wxPython) for fun? Mostly fun and some practical problems. Later I've used Boa Constructor to make GUI's for some customers. Are there still some things you feel you need to learn or improve? Sure, I struggle with OO when it gets complicated and new features like decorators. And idioms. But generally it's programming skills and algorithmic scent I need. Additional comments/complains here: :) I'm a bit afraid that the new features and the turning to concepts like iterators and generators are making Python elitistic. Old python code floating around the net is generally easy to read, while newer often is harder to grasp. I don't like it when my own inherent stupidity becomes to obvious to hide. -- http://mail.python.org/mailman/listinfo/python-list
Re: Looping through a file a block of text at a time not by line
Rosario Morgan wrote:
Hello
Help is great appreciated in advance.
I need to loop through a file 6000 bytes at a time. I was going to
use the following but do not know how to advance through the file 6000
bytes at a time.
file = open('hotels.xml')
block = file.read(6000)
newblock = re.sub(re.compile(r'Rate.*?/Rate'),'',block)
print newblock
I cannot use readlines because the file is 138MB all on one line.
Suggestions?
-Rosario
Probably a more terse way to do this, but this seems to work
import os
offset = 0
grab_size = 6000
file_size = os.stat('hotels.xml')[6]
f = open('hotels.xml', 'r')
while offset file_size:
f.seek(offset)
data_block = f.read(grab_size)
offset += grab_size
print data_block
f.close()
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Screen capturing on Windows
Is it possible by use of pyWin32 or ctypes to make a screen capture of an inactive, or a hidden window if the hwnd/WindowName/ClassName is known? I've seen dedicated screen capture software do this. While PIL.ImageGrab.grab() is excellent, it will only capture the foreground of the desktop. I've tried for hours, but I soon get helplessly lost in the labyrinths of the Win32API. -- http://mail.python.org/mailman/listinfo/python-list
Re: a string problem
[EMAIL PROTECTED] wrote:
hi
if i have a some lines like this
a ) here is first string
b ) here is string2
c ) here is string3
When i specify i only want to print the lines that contains string ie
the first line and not the others. If i use re module, how to compile
the expression to do this? I tried the re module and using simple
search() and everytime it gives me all the 3 lines that have string
in it, whereas i only need line 1.
If re module is not needed, how can i use string manipulation to do
this? thanks
If this is a RL-situation,
if mystring.endswith('string') will do
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Re: import hook
Jeremy Sanders wrote: Hi - Is it possible to override the import process so that if in my program I do (...) Any ideas? Why not handle the foo.bar/version string separately and just append the resulting path to sys.path? -- http://mail.python.org/mailman/listinfo/python-list
Re: John Bokma harassment
Xah Lee wrote: I'm sorry to trouble everyone. But as you might know, due to my controversial writings and style, recently John Bokma lobbied people to complaint to my web hosting provider. After exchanging a few emails, my web hosting provider sent me a 30-day account cancellation notice last Friday. [EMAIL PROTECTED] ∑ http://xahlee.org/ I can just declare my support. Reading Mr. Bokmas comments below [*] certainly makes my suport stronger. * http://groups.google.com/group/comp.lang.python/tree/browse_frm/thread/28edb6b248dbae85/b89d934d12adf3a9?rnum=61utoken=rJk98zMqRjR_RIs2SQx_9Hh6SccKbmCj1Nw6TBD3Zp3qTOpBLP1axhNO2WH2KLoXjtKtup7b9E_jTXH5EMe8d2Tvis0T_done=%2Fgroup%2Fcomp.lang.python%2Fbrowse_frm%2Fthread%2F28edb6b248dbae85%2Fbbcab154ad579cd4%3Futoken%3DrJk98zMqRjR_RIs2SQx_9Hh6SccKbmCj1Nw6TBD3Zp3qTOpBLP1axhNO2WH2KLoXjtKtup7b9E_jTXH5EMe8d2Tvis0T%26#doc_837dc168e2a56fa2 -- http://mail.python.org/mailman/listinfo/python-list
Re: Is Welfare Part of Capitalism?
Welfare is not a built-in, but in some distributions it's available as a module. Just type import Welfare. However, be aware of the Welfare.division() queerness. It won't be fixed until the Python 3000 is a fact. There is also some issues with the garbage collection. Under certain circumstances the dreaded Dutch disease may occur. -- http://mail.python.org/mailman/listinfo/python-list
Re: Measure memory usage in Python
gene tani wrote: Rune Strand wrote: Is there a way to measure how much memory a data structure use? For instance, what is the footprint of a particular list object like [0,1,2,3,4,5,6,7,8,9]? i have a note to try this, but haven't got around to it, if you want to blog/post http://pysizer.8325.org/ Thank you! That seems to be what I was looking for. -- http://mail.python.org/mailman/listinfo/python-list
Measure memory usage in Python
Is there a way to measure how much memory a data structure use? For instance, what is the footprint of a particular list object like [0,1,2,3,4,5,6,7,8,9]? -- http://mail.python.org/mailman/listinfo/python-list
Re: How to Convert a string into binary
HNT20 wrote: Hello All def ascii_to_bin(char): ascii = ord(char) bin = [] while (ascii 0): if (ascii 1) == 1: bin.append(1) else: bin.append(0) ascii = ascii 1 bin.reverse() binary = .join(bin) zerofix = (8 - len(binary)) * '0' return zerofix + binary some_string = 'Time to go now, Rummy?' binary = [] for char in some_string: binary.append(ascii_to_bin(char)) print binary print .join(binary) some_string = 'Time to go now, Rummy?' binary = [] for char in some_string: binary.append(ascii_to_bin(char)) print binary print .join(binary) ['01010100', '01101001', '01101101', '01100101', '0010', '01110100', '0110', '0010', '01100111', '0110', '0010', '01101110', '0110', '01110111', '00101100', '0010', '01010010', '01110101', '01101101', '01101101', '0001', '0011'] 01010100 01101001 01101101 01100101 0010 01110100 0110 0010 01100111 0110 0010 01101110 0110 01110111 00101100 0010 01010010 01110101 01101101 01101101 0001 0011 -- http://mail.python.org/mailman/listinfo/python-list
Re: how relevant is C today?
gregarican wrote: 1) Smalltalk - The original object oriented programming language. Influenced anything from Mac/Windows GUI to Java language. No. Simula is the original object oriented programming language. -- http://mail.python.org/mailman/listinfo/python-list
Re: mod_python + apache + winxp = nogo
I've set up that combo several times. I haven't had any problems. I just looked at apach.conf, it's the same line. Did you run the mod_python-3.2.8.win32-py2.4.exe installer? -- http://mail.python.org/mailman/listinfo/python-list
Re: How to parse a name out of a web page?
Haibao Tang wrote: with high accuracy... My temporary plan is to first recognized consecutive two or three initial-capitalized words, but certainly we need to do more than that? Anyone has suggestions? Thanks first. It's not easy to say without seeing the HTML. If you the structure allows it, a couple of str.split() is probably the easiest way, but you always have BeautifulSoup. http://www.crummy.com/software/BeautifulSoup/ -- http://mail.python.org/mailman/listinfo/python-list
Re: Best way to create a copy of a list
Frank Millman wrote: Hi all Assume a 2-dimensional list called 'table' - conceptually think of it as rows and columns. Assume I want to create a temporary copy of a row called 'row', allowing me to modify the contents of 'row' without modifying the contents of 'table'. I used to fall into the newbie trap of 'row = table[23]', but I have learned my lesson by now - changing 'row' also changes 'table'. I have found two ways of doing it that seem to work. 1 - row = table[23][:] 2 - row = [] row[:] = table[23] Are these effectively identical, or is there a subtle distinction which I should be aware of. I did some timing tests, and 2 is quite a bit faster if 'row' pre-exists and I just measure the second statement. you could use list() row = list(table[23]) The effect is the same, but it's nicer to read. See also the copy module. -- http://mail.python.org/mailman/listinfo/python-list
Re: can I get the index number in for x in y loop?
JuHui wrote: a='String' for x in a: ... print x ... S t r i n g can I get the index number of a in the upon loop within for x in a loop? for x, y in enumerate(a) print x, y -- http://mail.python.org/mailman/listinfo/python-list
Re: Exception handling....dumb question?
kbperry wrote:
In Python,
When using the default except (like following)
try:
some code that might blow up
except:
print some error message
Is there a way to show what error it is throwing?
Like in Java, you can do
catch (Exception e){
System.out.println(e);
}
Or something like that.
Is there an equivalent way to do this in Python?
see sys.exc_info( )
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Re: Convert Word .doc to Acrobat .pdf files
kbperry wrote:
Questions:
Does Acrobat Pro, have some way to interface with it command-line (I
tried searching, but couldn't find anything)? Is there any other good
way to script word to pdf conversion?
Note: The word documents do contain images, and lots of stuff besides
just text.
The Acrobat Distiller installs (or van install) a Word VBS macro which
allows Word to Save As .PDF. It's easy to call from Python:
doc = somefile.doc
import win32com.client
# Create COM-object
wordapp = win32com.client.gencache.EnsureDispatch(Word.Application)
wordapp.Documents.Open(doc)
wordapp.Run('!CreatePDFAndCloseDoc) # the name of the macro for
Acrobat 6.0
wordapp.ActiveDocument.Close()
wordapp.Quit()
You'll probably wrap this in more logic, but it works.
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Re: Cookbook for beginners?
Aahz wrote: If you were going to name three or five essential recipes from the Python Cookbook suitable for beginners, what would you pick? Yes, this is for _Python for Dummies_, so idioms that aren't in the Cookbook are also fine. If it's for _beginners_ / _dummies_, I would expect things like 1.6 names = ['George', 'Saddam', 'Osama'] name_string = ', '.join(names) 4.10 dict.setdefault(k, v) ?.? dict = dict(zip(list_a, list_b)) - listcomps 2.1 / 2.2 reading/writing from/to files ?.? string-methods like .split(), .upper(), endswith(), startswith(), isalpha() ... -- http://mail.python.org/mailman/listinfo/python-list
Re: MVC in Python for web app dev
[EMAIL PROTECTED] wrote: Please let me state off the cuff that I'm not after a big Python Vs Ruby war or anything here! I'm trying to make the switch to Python for my web development work as I've been using it for quite some time for other programming work (albeit mainly hobby and personal interest projects) as I'm getting to the stage where the need for a real MVC capable language framework is a must simply to save some time and PHP just isn't cutting it (although CakePHP is all right and the new Zend framework looks to hold some promise). Here's where I'm in a pickle! I would prefer to stick with Python as I am enjoying it BUT Ruby on Rails is simply too hard to deny a look in. The ease that it provides in generating scaffolding and the intuitive templating engine is just plain good, adding in to this the RadRails Eclipse plugin for a beautiful IDE (I know, I know how great vim/emacs/whatever is but still, if RadRails is going to save some time frankly I'm liking it already!). I'm aware that Pylons is trying to compete with Rails in the near future but I'm just not clear on how directly they are trying to compete...will Pylons have the same generation functions and other time saving goodies that RoR has or am I barking up the wrong tree? Basically I'm not going to abandon Python because I find it fits me better as a language than Ruby, but when I need to be able to develop good, stable MVC web apps in a small amount of time I don't want to be wasting my time waiting for Python to deliver something it's just not going to (I also forgot to mention I don't want to run on a custom little webserver, I prefer the piece of mind I have with Apache - in true LAMP style :P). So I'm asking for ANY opinions here! For datadriven web apps that need to be able to support small and large scale distros, can Python deliver or is RoR the way to go? Thanks for any help you guys throw at me!! Oh, and any examples like current big webapps to back up a particular point of view would be greatly appreciated too! Thanks! http://www.djangoproject.com/ http://www.turbogears.org/ -- http://mail.python.org/mailman/listinfo/python-list
Re: Adding a __filename__ predefined attribute to 2.5?
I've read a lot of your comments the last years. Your friendliness always strikes me. -- http://mail.python.org/mailman/listinfo/python-list
Adding a __filename__ predefined attribute to 2.5?
Is it an idea to include a new __filename__ predefined attribute to 2.5, so that __file__ contains the entire path to the module, and __filename__ only the name of the module? For instance it's useful to include a not-static reference to the filename in a scripts usage() section and it's cumbersome to extract the filename or to do module imports just to parse it. -- http://mail.python.org/mailman/listinfo/python-list
Re: Adding a __filename__ predefined attribute to 2.5?
I Steve,
I know it's several ways to isolate the filename. I just want to avoid
the overhead of importing sys or os to achieve it.
Currently I have this in my scripts:
__filename__ = __file__.replace('\\', '/').rsplit('/', 1)[-1]
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Re: Adding a __filename__ predefined attribute to 2.5?
Excuse me, do you suffer from a bad hair-day? I didn't say it is platform independant. It's ok for my use on Linux and Windows. If you cannot imagine any other usecase for a __filename__ attribute, that's your problem, not mine. -- http://mail.python.org/mailman/listinfo/python-list
Re: Adding a __filename__ predefined attribute to 2.5?
those modules are already imported when Python gets to your code, so the only overhead you're saving is a little typing. I don't understand this. Could you please elaborate? - if sys or os are not imported for any other causes how are they already imported? Maybe I'm wrong here, and accessing the filesystem and reading the module into memory represents no cost. My mistake, in that case. wow. that's one lousy optimization... here's a *shorter* piece of code, which is also readable and portable, and a lot easier to type on most keyboards: import os __filename__ = os.path.basename(__file__) It may be lousy, but it requires no imports. And, as I said in the answer to Steve, I _know_ there are many ways to achieve this, including yours. But in your rush to pin-point lousy code, you didn't read that, I suppose. -- http://mail.python.org/mailman/listinfo/python-list
Re: Adding a __filename__ predefined attribute to 2.5?
Ok, Alex. I know a good explanation when I see one. Thanks! -- http://mail.python.org/mailman/listinfo/python-list
Re: week-year conversion to date
year = '2005' week = 50 weekday = 1 # Monday is 1 time_expr = '%s, %s, %s' % (year, week, weekday) time_struct = time.strptime(time_expr, %Y, %W, %w) print time.strftime(%Y%m%d, time_struct) But the datetime module may have an easier way -- http://mail.python.org/mailman/listinfo/python-list
Re: Some advice on startingout with python.
It's not about GUI, but it's a good book. It's both online and printed: http://diveIntoPython.org -- http://mail.python.org/mailman/listinfo/python-list
Re: execute commands independantly
Mike Tammerman wrote:
I am trying to execute an executable or a pyton script inside my
program. I looked at the subprocess and os module. But all the
functions in these modules blocks my application. What I want to do is
run the subprocess without any concern. I don't care of its return type
or child signals. Just start and let it run independantly.
If you don't need any output, os.system('app') should do.
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Re: File parser
It's not clear to me from your posting what possible order the tags may
be inn. Assuming you will always END a section before beginning an new,
eg.
it's always:
A
some A-section lines.
END A
B
some B-section lines.
END B
etc.
And never:
A
some A-section lines.
B
some B-section lines.
END B
END A
etc.
is should be fairly simple. And if the file is several GB, your ought
to use a generator in order to overcome the memory problem.
Something like this:
def make_tag_lookup(begin_tags):
# create a dict with each {begin_tag : end_tag}
end_tags = [('END ' + begin_tag) for begin_tag in begin_tags]
return dict(zip(begin_tags, end_tags))
def return_sections(filepath, lookup):
# Generator returning each section
inside_section = False
for line in open(filepath, 'r').readlines():
line = line.strip()
if not inside_section:
if line in lookup:
inside_section = True
data_section = []
section_end_tag = lookup[line]
section_begin_tag = line
data_section.append(line) # store section start tag
else:
if line == section_end_tag:
data_section.append(line) # store section end tag
inside_section = False
yield data_section # yield entire section
else:
data_section.append(line) #store each line within section
# create the generator yielding each section
#
sections = return_sections(datafile,
make_tag_lookup(list_of_begin_tags))
for section in sections:
for line in section:
print line
print '\n'
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Re: How to find Windows Application data directory??
You have the environment variable APPDATA. You can access it with os.environ(). -- http://mail.python.org/mailman/listinfo/python-list
Re: Better console for Windows?
Brett Hoerner wrote: Another problem with cmd.com is when I run IPython, if I have an error, or tab or anything, I get the speaker beep (ala linux) but I can't find a way to turn it off. This is a huge problem because I cannot disable my system speaker on my laptop (not even in BIOS like my old one, and it's an error, it bypasses the fact that all my sound is muted in Windows) and I get incredibly loud beeps all the time (because I suck) which would not be acceptable while I'm coding on the sly in boring class. I know that problem... it's extremely annoying! Here's one way to solve it; 1. Start 'Device manager'. 2. On the menu, click 'View' and check off Show hidden devices 3. Locate 'Beep' 'under Non-Plug and Play Drivers' 4. Right-click 'Beep', select 'Disable' -- http://mail.python.org/mailman/listinfo/python-list
Re: Better console for Windows?
Annoyed by windows? Check this URL: http://www.annoyances.org/exec/show/category01 ;-) -- http://mail.python.org/mailman/listinfo/python-list
Re: Which kid's beginners programming - Python or Forth?
BORT wrote: Please forgive me if this is TOO newbie-ish. I am toying with the idea of teaching my ten year old a little about programming. I started my search with something like best FREE programming language for kids. After MUCH clicking and high-level scanning, I am looking at Python and Forth. Both have advocates that say each is a great approach to learning computers. You may find RUR interesting http://rur-ple.sourceforge.net/ (Learning Python: Child's Play with RUR-PLE!) -- http://mail.python.org/mailman/listinfo/python-list
Re: reading a list from a file
But iif it are many lists in the file and they're organised like this:
['a','b','c','d','e']
['a','b','c','d','e']
['A','B','C','D','E'] ['X','F','R','E','Q']
I think this'll do it
data = open('the_file', 'r').read().split(']')
lists = []
for el in data:
el = el.replace('[', '').strip()
el = el.replace(', )
lists.append(el.split(','))
# further processing of lists
but the type problem is still to be resolved ;-)
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Re: reading a list from a file
:-/ You're right! -- http://mail.python.org/mailman/listinfo/python-list
Re: windows directory
On XP at least you have the environment variable ProgramFiles. You can fetch the path it holds through os.environ -- http://mail.python.org/mailman/listinfo/python-list
Re: how to operate the excel by python?
John, I wrote a script that autmates the conversion from XLS to CSV. It's easy. But your points are still good. Thanks for making me aware the xlrd module! -- http://mail.python.org/mailman/listinfo/python-list
Re: how to operate the excel by python?
The key is Python for Windows : http://starship.python.net/crew/mhammond/win32/ See here for an Excel dispatch example: http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/325735 When doing such operations, I generally save all the Excel files to CSV files and do the operations on them using the csv module. -- http://mail.python.org/mailman/listinfo/python-list
Strange KeyError using cPickle
I'm experiencing strange errors both with pickle and cPickle in the
below code:
import cPickle as pickle
#import pickle
from string import ascii_uppercase
from string import ascii_lowercase
def createData():
d1 = list(Something's rotten)
d2 = tuple('in the state of Denmark')
d3 = [('a', 'b'), ('c', 'd')]
#d3 = [('s a', 's b'), ('s c', 's d')]
#d3 = [('sa', 'sb'), ('sc', 'sd')]
#d3 = [['s a', 's b'], ['s c', 's d']]
d4 = dict(zip(ascii_uppercase,ascii_lowercase))
return [d1, d2, d3, d4]
def doPickle(data, pickleFile = 'pickleTest.p', proto = 2):
f = XWwz(pickleFile, 'w')
p = pickle.Pickler(f, proto)
p.dump(data)
f.close()
def doUnpicle(pickleFile = 'pickleTest.p'):
f = XWwz(pickleFile, 'rb')
up = pickle.Unpickler(f)
data = up.load()
f.close()
return data
data = createData()
doPickle(data)
xdata = doUnpicle()
1) The above code works, but if I use pickle instead of cPickle, I get
KeyError: '\n' when unpickling.
2) If I uncomment any of the other d3 bindings in createData(), I get
KeyError: '\n', or
cPickle.UnpicklingError: invalid load key, '' (newline)
3) If I don't use the d1, d2 and d4 bindings, no error occurs.
I can't find the explanation. Why the newline error? There are no
newlines in the data. Are not all those structures pickable?
Thanks for all help!
(on WinXP, CPython 2.4.1)
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Re: Strange KeyError using cPickle
[Tim Peters] What is XWwz? Assuming it's a bizarre typo for open, change the 'w' there to 'wb'. Pickles are binary data, and files holding pickles must be opened in binary mode, especially since: ... (on WinXP, CPython 2.4.1) Thanks Tim. The bizarre 'typo' appears to be caused by ad-blocking software confusing python code with javascript (i think). I had the feeling this was a red facer. Setting the protocol to 0 (text) also make it work. -- http://mail.python.org/mailman/listinfo/python-list
Python as client-side browser script language
What would it take to create a Firefox extension that enables Python as a script language in the browser - just like Javascript? Is it at all possible? Are the hundred good reasons not to bother? I once made an application that used MozPython[1]. It was fun and very fast compared to the Mod_Python I eventually replaced it with. I had to, because of all the mess updating Mozilla caused. ActiveState has a project too [2]. But none of these can replace Javascript Grail used Python as scrpt language, I believe. And by the Win32-wonders of Mr. Hammeond it's possible to use Python in IE. But what aboit a easy-to-install extension for Firefox? Wouldn't that be cool? [1] http://www.thomas-schilz.de/MozPython/README.html [2] http://www.mozilla.org/catalog/architecture/xpcom/pyxpcom/ -- http://mail.python.org/mailman/listinfo/python-list
Re: speeding up Python script
Without seeing any code, it's hard to tell, but it's not a wild guess that 'six inside for loops' may be replaced by more efficient ways ;-) -- http://mail.python.org/mailman/listinfo/python-list
Re: Unique Elements in a List
You're right. I somehow missed the index part :-o. It's easy to fix though. -- http://mail.python.org/mailman/listinfo/python-list
