PIL show moves focus
Hi! I have an application where images (jpeg) have to be annotated by an operator. I use PIL like: import Image im = Image.open(Path) im.show() raw_input(Path + ':') Python runs in a console window. Then show starts some application (in my case Windows picture and FAX viewer) and the picture goes to this application window. Then operator enteres the annotation as prompted by raw_input. So far so good. I understand, that the approach is very minilalistic, but suffisient for what has to be done. Unfortunatelly after im.show focus moves to thw Windows picture ... and stays there until I move it back using the mouse. Question: is there any way of returning the input focus to the console window? -- http://mail.python.org/mailman/listinfo/python-list
PAMIE save an image
Hi, all!
I'm writing a web page tester. The page is designed in such a way, that
every time it creates an image file and displays it on the page. As
soon as the file is downoladed it is deleted from the server.
Using PAMIE I can download the page (by controlling an instance of IE)
then
images = ie.imagesGet() #list of images
src = images[0].getAttribute('src') #sorce of the image
Is it possible to save the image(s) in the local file?
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Re: Eclipse best/good or bad IDE for Python?
Eclipse is very-very slow. 3G P4 looks like 8M 86. It might be good for Java, but not for Python. BUT THIS IS 1 OF 2 IDE'S WHICH ALLOWS DEBUGGING OF MULTITHREADED APPLICATIONS. I prefer Eric or PythonWin. -- http://mail.python.org/mailman/listinfo/python-list
Re: Eclipse best/good or bad IDE for Python?
Eclipse is very-very slow. 3G P4 looks like 8M 86. It might be good for Java, but not for Python. BUT THIS IS 1 OF 2 IDE'S WHICH ALLOWS DEBUGGING OF MULTITHREADED APPLICATIONS. I prefer Eric or PythonWin. -- http://mail.python.org/mailman/listinfo/python-list
Re: python speed
Isaac Gouy wrote: Which stated Python is doing the heavy lifting with GMPY which is a compiled C program with a Python wrapper - but didn't seem to compare that to GMPY with a Java wrapper? You are missing the main idea: Java is by design a general purpose programming language. That's why all GMPYs and alike are written in Java - now wrappers to C-libraries. Python, by design, is glue language. Python program is assembly of C extensions and buildins wrapped in Python sintax. IHMO real life benchmark yuo are critisizing represents real life situation. -- http://mail.python.org/mailman/listinfo/python-list
Re: Aproximative string matching
This algorithm is called soundex. Here is one implementation example. http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/52213 here is another: http://effbot.org/librarybook/soundex.htm -- http://mail.python.org/mailman/listinfo/python-list
Re: ownership problem?
Yes! Python uses auto garbage collection. As soon as the object reference count becomes 0 it is removed from existence. So the problem typical for C/C++: accessing pointers to already deleted objects does not exist in Python. -- http://mail.python.org/mailman/listinfo/python-list
Re: deleting registry keys and value
Looks OK to me. Just tried on my network - works with no exceptions -- http://mail.python.org/mailman/listinfo/python-list
Re: A way for closing an app monitor
//So my solution (need help on this) is that I have been thinking on letting the monitor listen for socket connection. Through this, the main app can tell him to close when the main app closes correctly. Do you think this is well thought? Any suggestions? This is the only solution you have to consider. If monitor and main app. run on the same machine - does not matter, But when they run on different machines and maybe in different domains... One more hint: make monitor a listener (server), namely HTTP server. In this case you will not have problems with proxyes/firewalls etc. -- http://mail.python.org/mailman/listinfo/python-list
Re: python and VisualFox dbf
A hint :) Is ADO supported? -- http://mail.python.org/mailman/listinfo/python-list
Re: Python vs Ruby
Languages are very similar but Python has more cale avaliable. Much more. -- http://mail.python.org/mailman/listinfo/python-list
Re: date reformatting
setup.py install -- http://mail.python.org/mailman/listinfo/python-list
Re: Parsing a Python dictionary inside a Python extension
1. Why not to simplfy the problem. You can extract values from the dictionari in python (this is fast). Put them in a list (fast). Pass the list to the extension, handle it and return to python. etc. 2. Use Pyrex. -- http://mail.python.org/mailman/listinfo/python-list
Re: cpu usage limit
I understand, that what I suggest does not solve the problem you want, but.. Why do you want to restrict CPU usage to 30%? In Windows I run CPU intesive therads on IDLE priority, while interfacand/or communication threads run on normal. This gives me best of two worlds: 1. I use 100% CPU (good) and 2. progam i responcive (very good). There is no cross platform way to change the thread priority. But most OS (as well as thread libraries) support setting priorities. -- http://mail.python.org/mailman/listinfo/python-list
Re: Is Python suitable for a huge, enterprise size app?
Sure it does not. As well as C, unless you instaead of malloc use low level os-dependant APIs. -- http://mail.python.org/mailman/listinfo/python-list
Re: Is Python suitable for a huge, enterprise size app?
C programs also can be disassembled. Serious people do not consider braking the machine code harder byte-code. -- http://mail.python.org/mailman/listinfo/python-list
Re: Reg php equivalent Mail_mime Module in Python
Look for: http://sourceforge.net/projects/pymaillib/ -- http://mail.python.org/mailman/listinfo/python-list
Re: Merging overlapping spans/ranges
The linear method: You create an array - one bool per minute. For one day 24 * 60 entries is enough. Spans (Start, End) are in minutes from midnight. Set array slots in range(Start, End) to True for each input span. Scan the array and find metaspans - contiguous sequences of False. -- http://mail.python.org/mailman/listinfo/python-list
Re: Database backend?
Look for the packet called KirbyBase. Small, pythonic, text based files... -- http://mail.python.org/mailman/listinfo/python-list
Re: Newbie : checking semantics
I am new to python and was very enthustic about its possibilities when I discover that python is really what it is : just a scripting language. .. The fact that python doesn't check if the symbol ... is defined, is really bad ... 1. For a language like Python full static checking is IMPOSSIBLE. Consider setattr() with attribute name read from a file (f.e. names of the columns in the database). 2. Trust me (and other Python programmers most likely would agree) this type of error happens much more seldom then newbies (especially coming from strongly typed languages) imagine while adjusting to the language. 3. Python advantages overpower drawbacks 10 to 1. 4. Most likely you never used Fortran :) -- http://mail.python.org/mailman/listinfo/python-list
Re: database in python ?
[EMAIL PROTECTED] wrote: I need to build table which need searching data which needs more power then dictionary or list in python, can anyone help me what kind of database suitable for python light and easy to learn. Is mySQL a nice start with python ? It depends... mySQL is fine for more or less data centric applications with many tables. When I need SQL search power, but the number of tables/records is small enough gadfly is the best bet. Contact database, CD catalog, extended configuration data are proper examples. In such cases, gadfly is by far faster, then normal relational databases. -- http://mail.python.org/mailman/listinfo/python-list
Dialogic bindings
Hi! Does somebody have bindings to Dialogic voice cards driver. I'm sure some people do have them, but could not find any reference. Ideally there sould be some framework for CT applications in Python. Any help would be greatly appreciated. -- http://mail.python.org/mailman/listinfo/python-list
Re: Threads and variable assignment
Theoretically you have to use lock, while accesing the isgood instance, but... practically noting bad can happen IN THIS PARTICULAR CASE, if you don't. Python uses Global Interpreter Lock. In other words only one thread is running at any particular moment. Thread scheduling is preemptive, but atomic actions are not interrupted. Bollean asigment is an atomic action. WELCOME TO THE POWER OF MULTITHREADING :) -- http://mail.python.org/mailman/listinfo/python-list
Re: Help understanding code
Reading the language tututorial would help you a lot :(
=== what is the difference between pc and pc()?
pc = getToolByName() - returnes a refference to a method
pc is a refference to a method, pc() is a method invocation.
numbers = {total:len(results),bytype:{},bystate:{}}
=== This is hard to understand
num = numbers[bytype].get(ctype, 0) where does .get
come from? and what is the string 'bytype' doing?
numbers[bytype][ctype] = num== is this some kind
of an array?
Read the tutorial especially portion about dictionaries!
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Re: Best editor?
Windows: textpad Linux: vim -- http://mail.python.org/mailman/listinfo/python-list
Re: threading.Event file descriptor
Nicolas Fleury wrote: Hi, Is there any way to get the file descriptor on Unix or handle on Windows associated internally with a threading.Event object? So that it can be used in a call to select or WaitForMultipleObjects. Thx and regards, Nicolas Good idea! But... There is no event handle used in Event object (for NT at least). Do not know about Linux... Unless you want to rewrite the interpreter (namelly PyThread_allocate_lock.c) for platforms you are talking about, you would be better of, if you create your own class (derived from Event, and ovewritte aquire, release and wait methods). -- http://mail.python.org/mailman/listinfo/python-list
Re: threading.Event file descriptor
//And there's no handle at all? There is one (check thread_nt.h) you have to propagate HANDLE to Pythom level. That's why, you have to change the interpreter. Do not forget, that thread is a build-in module. //I wouldn't want to derive from Event since my goal would be to submit a patch to make subprocess.Popen.wait take an optional threading.Event to kill the process. And that's it? Right now aquire_lock is non-interruptable, as a result your Popen.wait is also non-interruptable, but if you pass derived event you will be able to handle more generic cases. -- http://mail.python.org/mailman/listinfo/python-list
Re: Convert the contents of a string into name of variable
TRy db_row does exactly what you want to do. Slower, but more simple: ## #Sequence2Struct.py class Struct: pass def MakeStruct(seq, names): obj = Struct() if len(seq) != len(names): raise IndexError(seq and names are not the same length) for i in range(len(names)): obj.__dict__[names[i]] = seq[i] return obj def ExtractNames(t): return [item[0] for item in t] if __name__ == __main__: t = (1, 2, 3) n1 = ((A, 1), (B, 1), (C, 2)) n = ExtractNames(n1) print n s = MakeStruct(t, n) print s, s.A, s.B, s.C n = (A, B) s1 = MakeStruct(t, n) ## -- http://mail.python.org/mailman/listinfo/python-list
Re: Anonymus functions revisited
Please do not change the syntax. Better focus on the library. 1. There are already 3 constructs right now for this problem. 2. List comprehensions are used mostly in examples. At least I came to such conclusion reading the standard library modules. -- http://mail.python.org/mailman/listinfo/python-list
Re: Checking if port is in use.
How about this? try: s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR,1) s.bind((HOST, PORT)) except socket.error, e: if e print address already in use -- http://mail.python.org/mailman/listinfo/python-list
Re: {SPAM} start a python application as a win NT service
I'm using windows 2003 small business server and I want to install my python programm as a NT (it's just an old name) service. Does anybody know how to do this? 1. you need win32 extensions installed; 2. you need py2exe (optional if you want to install the service on the machine with no Python) 3. an example can be found in \Python23\Lib\site-packages\win32\Demos\service Good luck -- http://mail.python.org/mailman/listinfo/python-list
Re: Speeding up CGIHTTPServer (Tim Roberts)
Starting a process on WIN98 is VERY slow. (On NT much faster the second time). If you really want to use WIN98, modify CGIHTTPServer.py in such a way, that branch #Other O.S. -- execute script in this process is executed. This way CGIHTTPServer is as fast as it gets. At least not slower then ISAPI in JScript or VBScript and faster then Apache cgi. If you need the modified module, I can send you one for 2.3. -- http://mail.python.org/mailman/listinfo/python-list
Re: namespace collisions
John Lenton wrote: On Thu, Feb 17, 2005 at 06:20:36PM +, Will McGugan wrote: Hi, I'm accumulating a number of small functions, which I have sensibly put in a single file called 'util.py'. But it occurs to me that with such a generic name it could cause problems with other modules not written by myself. Whats the best way of handling this? If I put it in a common location in my Python path, should I call it willsutil.py? local.util is probably a convention worth starting :) or you could go with WilMcGugan.util but ThatGetsOldFast. -- John Lenton ([EMAIL PROTECTED]) -- Random fortune: All my friends are getting married, Yes, they're all growing old, They're all staying home on the weekend, They're all doing what they're told. I call modules like x_utils.py, where prefix x is assigned to a particular pakage. In this case import statements look like: import Company.repotrtools.e_excel as e_excel or from Company.repotrtools.e_excel import e_writer, e_reader generally this are classes, not functions. Newer had namespace collisions (yet :) -- http://mail.python.org/mailman/listinfo/python-list
Where is WSAEnumNetworkEvents???
I was trying to write an asyncronous TCP server for win32 using WSAEventSelect (which lives if win32file). Such events require WaitForMultipleObjects (which lives if win32event) and WSAEnumNetworkEvents WHICH IS NOT EXPOSED. This makes WSAEventSelect useless. Does somebody know how to add the WSAEnumNetworkEvents and WSANetwotkEvents structure win32file? Maybe I'm missing something? -- http://mail.python.org/mailman/listinfo/python-list
py-xmlrpc postpone question
Hi! I'm trying to use py-xmlrpc. All works fine (and very fast) in one-threaded case, but I really have to serve many clients. As advertised, py-xmlrpc supports non-blocking calls (via select). When request is received the handler is called with proper parameters. As I understood from reading the source, if rpc call can't be executed immediately (or takes long time) respond can be postponed by raising postpone exception and when respond is ready, calling queueResponse() . I wanted to have a pool of worker threads listening on a queue. In the lengthy command handlers, post data on the queue and raise postpone. Threads from the pool respond by calling queueResponse() when rpc is done. Server trace tells me that postpone was received, but client reacts as if socket was closed (got EOS while reading). I tryed to supress default error handling on the client side by returning from OnErr() xmlrpc.ONERR_KEEP_WORK, but this kills the interpreter! What am I doing wrong? -- http://mail.python.org/mailman/listinfo/python-list
Re: smtplib bug with Windows XP
Try manually, but think about these options: a firewall that has suddenly been enabled, an SMTP server that now requires authentication, some kind of proxy like what virus scanners use (though why they would intercept outgoing mail I don't know)... -Peter I bet it was the firewall on XP. -- http://mail.python.org/mailman/listinfo/python-list
Re: encryption/decryption help
For the problem described pycrypto is the best solution. Blowfish is simple and secure. The method you want to use is called security by obscurity. But chances are very high that the homebrewed scheme you will invent will not stand any serious crytoatack. First of all: both sides (sender and receiver) have to agree on the session key used. And this is the most dangerous exchange. Sure you can hard coded the key on both sides, but periodically you have to change them. I was facing similar problem: had to secure legacy Inet server. I started with stunnel (worked great, but was a little bit sluggish). Then I figured out how to implement IPSEC (both sides were W2K) and this was the safiest solution. Sorry but it does not involve Python :( -- http://mail.python.org/mailman/listinfo/python-list
pyXLwriter and jython
Hi! I was using pyXLwriter in C-python, but recently had to code in jython. Tried to port pyXLwriter to jython and it does not work. Did somebody uset this module with jython? -- http://mail.python.org/mailman/listinfo/python-list
Re: File locking is impossible in Windows? SOLUTION
Sure it will do if one of the processes needs read access only. Scenario when you need shared rw acces with locking: In the file you have records say 30 bytes long, 2 processes are reading/writing these records by: lock-read-unlock or lock-write-unlock . Both processes have to open the file with rw access. But the third process can overwrite the locked file! Actually the common method to prevent file from been overwritten is: lock the region outside the file. Such feacure is added to lock/unlock namely for this purpose. You found the bug in WIN32. PS. When you copy the file (say c:\b) over file with locked region say (c:\a), the length of the file c:\b becomes the length of c:\a, and the content of c:\a is all zeroes. By the way, I would understand the logic if copy copyes bytes outside locked regions but preserves all locks. -- http://mail.python.org/mailman/listinfo/python-list
Re: File locking is impossible in Windows?
I just have written the program in C, which does the same. It behaves almost the way you described. Tthe copy command gives such diagnostic: The process cannot access the file because another process has locked a portion of the file. 0 file(s) copied. BUT THE FILE IS ACTUALLY OVERWRITTEN.. I'm posting this question on MS newsgroup microsoft.public.win32.programmer.kernel -- http://mail.python.org/mailman/listinfo/python-list
Re: File locking is impossible in Windows? SOLUTION
Sure it will do if one of the processes needs read access only. Scenario when you need shared rw acces with locking: In the file you have records say 30 bytes long, 2 processes are reading/writing these records by: lock-read-unlock or lock-write-unlock . Both processes have to open the file with rw access and the third process can overwrite the locked file. Actually the common method to prevent file from been overwritten is: lock the region outside the file. Such feacure is added to lock/unlock namely for this purpose. You found the bug in WIN32. In fact the file locked and overwritten hav ALL BYTES ZERO and the length of the copyed file. -- http://mail.python.org/mailman/listinfo/python-list
Re: better lambda support in the future?
Lambda functions will become obsolette in the nearest future. This is the PLAN. -- http://mail.python.org/mailman/listinfo/python-list
Re: looking for blocking on read of a real file (not socket or pipe)
I doubt that the recipe you recomended will work at all in the case of different processes. To do this right file has to be open in shared mode (by both programs). Python does not support shared access. In the case of one program, but different threads probably this will work. -- http://mail.python.org/mailman/listinfo/python-list
Re: M2Crypto for 2.4
//I will do it in the next day or two. Me too! Remember, this is a programmer and a manager telling you his plan. :) But, if I do not, nobody in my department will :( -- http://mail.python.org/mailman/listinfo/python-list
