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  • module compiled with swig not found by python

    - by openbas
    Hello, I've a problem with SWIG and python. I've a c-class that compiles correctly, but the python script says it can't find the module. I compile with: swig -c++ -python codes/codes.i g++ -c -Wall -O4 -fPIC -pedantic codes/*.cc g++ -I/usr/include/python2.6 -shared codes/codes_wrap.cxx *.o -o _codes.so This gives me a _codes.so file, as I would expect, but then I have this python file: import sys import codes (rest of the code omitted) It gives me: Traceback (most recent call last): File "script.py", line 3, in <module> import codes ImportError: No module named codes According to http://www.swig.org/Doc1.3/Introduction.html#Introduction_nn8 this is all I should have to do... The files are in the same directory, so the path should not be a problem ?

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  • Installing Python in Windows XP

    - by Sam
    My work PC has restrictions that stop me from adding programs to the start menu so when I try to install Python using the Python 2.6.5 Windows installer it can't complete as it tries to add a shortcut to my start menu. Is there a way around this? I.e another way of installing without the need for a shortcut? Edit: I'll also need to install NumPy which I can't do on the Portable version of Python.

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  • Using python code in ASP.NET Web forms app

    - by DotnetDude
    I would like to use some code written in python (it uses built in modules) in a regular ASP.NET/C# web application. I am a newbie in python and have heard of IronPython and how ASP.NET now allows us to create IronPython apps. Any thoughts on which way I should proceed? The python code is the on here

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  • Suggestions for a Cron like scheduler in Python?

    - by jamesh
    I'm looking for a library in Python which will provide at and cron like functionality. I'd quite like have a pure Python solution, rather than relying on tools installed on the box; this way I run on machines with no cron. For those unfamiliar with cron: you can schedule tasks based upon an expression like: 0 2 * * 7 /usr/bin/run-backup # run the backups at 0200 on Every Sunday 0 9-17/2 * * 1-5 /usr/bin/purge-temps # run the purge temps command, every 2 hours between 9am and 5pm on Mondays to Fridays. The cron time expression syntax is less important, but I would like to have something with this sort of flexibility. If there isn't something that does this for me out-the-box, any suggestions for the building blocks to make something like this would be gratefully received. Edit I'm not interested in launching processes, just "jobs" also written in Python - python functions. By necessity I think this would be a different thread, but not in a different process. To this end, I'm looking for the expressivity of the cron time expression, but in Python. Cron has been around for years, but I'm trying to be as portable as possible. I cannot rely on its presence.

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  • evaluating buffer in emacs python-mode on remote host

    - by Adrian
    Hello, I'm using emacs23 with tramp to modify python scripts on a remote host. I found that when I start the python shell within emacs it starts up python on the remote host. My problem is that when I then try to call python-send-buffer via C-c C-c it comes up with the error Traceback (most recent call last): File "", line 1, in ? ImportError: No module named emacs Traceback (most recent call last): File "", line 1, in ? NameError: name 'emacs' is not defined Now, I must admit that I don't really know what's going on here. Is there a way for me to configure emacs so that I can evaluate the buffer on the remote host? Many thanks.

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  • Learn ASP.NET or Python for web development?

    - by user300371
    I am new to programming and only know html,css,PHP and would like to start learning another new language. I am focused on web development and would just like to get your opinion on ASP.net and python. Which language would serve me best in making sites as to general programming? ASP.NET or django python? I know Python is "easy to learn" and similar to PHP, but ASP.net is also a good language.

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  • SWI-Prolog Semantic Web Library and Python Interface

    - by John Peter Thompson Garcés
    I want to write a Python web application that queries RDF triples using Prolog. I found pyswip for interfacing Python with SWI-Prolog, and I am currently looking into SWI-Prolog's RDF capabilities. I am wondering if anyone has tried this before--and if anyone has: what did your setup look like? How do you get pyswip to work with the SWI-Prolog semantic web library? Or is there another Python-Prolog interface that makes this easier?

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  • can the python wave module accept StringIO object

    - by user368005
    i'm trying to use the wave module to read wav files in python. whats not typical of my applications is that I'm NOT using a file or a filename to read the wav file, but instead i have the wav file in a buffer. And here's what i'm doing import StringIO buffer = StringIO.StringIO() buffer.output(wav_buffer) file = wave.open(buffer, 'r') but i'm getting a EOFError when i run it... File "/System/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/wave.py", line 493, in open return Wave_read(f) File "/System/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/wave.py", line 163, in __init__ self.initfp(f) File "/System/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/wave.py", line 128, in initfp self._file = Chunk(file, bigendian = 0) File "/System/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/chunk.py", line 63, in __init__ raise EOFError i know the StringIO stuff works for creation of wav file and i tried the following and it works import StringIO buffer = StringIO.StringIO() audio_out = wave.open(buffer, 'w') audio_out.setframerate(m.getRate()) audio_out.setsampwidth(2) audio_out.setcomptype('NONE', 'not compressed') audio_out.setnchannels(1) audio_out.writeframes(raw_audio) audio_out.close() buffer.flush() # these lines do not work... # buffer.output(wav_buffer) # file = wave.open(buffer, 'r') # this file plays out fine in VLC file = open(FILE_NAME + ".wav", 'w') file.write(buffer.getvalue()) file.close() buffer.close()

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  • How to flush the input stream in python?

    - by jinxed_coder
    I'm writing a simple alarm utility in Python. #!/usr/bin/python import time import subprocess import sys alarm1 = int(raw_input("How many minutes (alarm1)? ")) while (1): time.sleep(60*alarm1) print "Alarm1" sys.stdout.flush(); doit = raw_input("Continue (Y/N)?[Y]: ") print "Input",doit if doit == 'N' or doit=='n': print "Exiting....." break I want to flush or discard all the key strokes that were entered while the script was sleeping and only accept the key strokes after the raw_input() is executed.

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  • Exit Tks mainloop in Python?

    - by Olof
    I'm writing a slideshow program with Tkinter, but I don't know how to go to the next image without binding a key. import os, sys import Tkinter import Image, ImageTk import time root = Tkinter.Tk() w, h = root.winfo_screenwidth(), root.winfo_screenheight() root.overrideredirect(1) root.geometry("%dx%d+0+0" % (w, h)) root.focus_set() root.bind("<Escape>", lambda e: e.widget.quit()) image_path = os.path.join(os.getcwd(), 'images/') dirlist = os.listdir(image_path) for f in dirlist: try: image = Image.open(image_path+f) tkpi = ImageTk.PhotoImage(image) label_image = Tkinter.Label(root, image=tkpi) # ? label_image.place(x=0,y=0,width=w,height=h) root.mainloop(0) except IOError: pass root.destroy() I would like to add a time.sleep(10) "instead" of the root.mainloop(0) so that it would go to the next image after 10s. Now it changes when I press ESC. How can I have a timer there?

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  • Processing command-line arguments in prefix notation in Python

    - by ejm
    I'm trying to parse a command-line in Python which looks like the following: $ ./command -o option1 arg1 -o option2 arg2 arg3 In other words, the command takes an unlimited number of arguments, and each argument may optionally be preceded with an -o option, which relates specifically to that argument. I think this is called a "prefix notation". In the Bourne shell I would do something like the following: while test -n "$1" do if test "$1" = '-o' then option="$2" shift 2 fi # Work with $1 (the argument) and $option (the option) # ... shift done Looking around at the Bash tutorials, etc. this seems to be the accepted idiom, so I'm guessing Bash is optimized to work with command-line arguments this way. Trying to implement this pattern in Python, my first guess was to use pop(), as this is basically a stack operation. But I'm guessing this won't work as well on Python because the list of arguments in sys.argv is in the wrong order and would have to be processed like a queue (i.e. pop from the left). I've read that lists are not optimized for use as queues in Python. So, my ideas are: convert argv to a collections.deque and use popleft(), reverse argv using reverse() and use pop(), or maybe just work with the int list indices themselves. Does anyone know of a better way to do this, otherwise which of my ideas would be best-practise in Python?

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  • packaging and distributing Python code as executables

    - by user248237
    How can I compile my python module into an executable, and distribute it in a way that doesn't require the user to download all the external Python packages that the module I wrote uses? Aside from that, is there a general guy on packaging and distributing python code? i.e. going from a script/module to someone that's user-friendly and can be run, ideally cross-platform (at least between unix and mac). thanks.

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  • Execute a BASH command in Python-- in the same process

    - by Baldur
    I need to execute the command . /home/db2v95/sqllib/db2profile before I can import ibm_db_dbi in Python 2.6. Executing it before I enter Python works: baldurb@gigur:~$ . /home/db2v95/sqllib/db2profile baldurb@gigur:~$ python Python 2.6.4 (r264:75706, Dec 7 2009, 18:45:15) [GCC 4.4.1] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> import ibm_db_dbi >>> but executing it in Python using os.system(". /home/db2v95/sqllib/db2profile") or subprocess.Popen([". /home/db2v95/sqllib/db2profile"]) results in an error. What am I doing wrong? Edit: this is the error I receive: > Traceback (most recent call last): > File "<file>.py", line 8, in > <module> > subprocess.Popen([". /home/db2v95/sqllib/db2profile"]) > File > "/usr/lib/python2.6/subprocess.py", > line 621, in __init__ > errread, errwrite) File "/usr/lib/python2.6/subprocess.py", > line 1126, in _execute_child > raise child_exception OSError: [Errno 2] No such file or directory

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  • how to multithread on a python server

    - by user3732790
    HELP please i have this code import socket from threading import * import time HOST = '' # Symbolic name meaning all available interfaces PORT = 8888 # Arbitrary non-privileged port s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) print ('Socket created') s.bind((HOST, PORT)) print ('Socket bind complete') s.listen(10) print ('Socket now listening') def listen(conn): odata = "" end = 'end' while end == 'end': data = conn.recv(1024) if data != odata: odata = data print(data) if data == b'end': end = "" print("conection ended") conn.close() while True: time.sleep(1) conn, addr = s.accept() print ('Connected with ' + addr[0] + ':' + str(addr[1])) Thread.start_new_thread(listen,(conn)) and i would like it so that when ever a person comes onto the server it has its own thread. but i can't get it to work please someone help me. :_( here is the error code: Socket created Socket bind complete Socket now listening Connected with 127.0.0.1:61475 Traceback (most recent call last): File "C:\Users\Myles\Desktop\test recever - Copy.py", line 29, in <module> Thread.start_new_thread(listen,(conn)) AttributeError: type object 'Thread' has no attribute 'start_new_thread' i am on python version 3.4.0 and here is the users code: import socket #for sockets import time s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) print('Socket Created') host = 'localhost' port = 8888 remote_ip = socket.gethostbyname( host ) print('Ip address of ' + host + ' is ' + remote_ip) #Connect to remote server s.connect((remote_ip , port)) print ('Socket Connected to ' + host + ' on ip ' + remote_ip) while True: message = input("> ") #Set the whole string s.send(message.encode('utf-8')) print ('Message send successfully') data = s.recv(1024) print(data) s.close

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  • Mimic C preprocessor with Python/Ruby?

    - by prosseek
    I need to mimic the preprocessor feature of C with Python. If I want to run the debug release, I use as follows with C #ifdef DEBUG printf(...) #endif I just use -DDEBUG or similar to trigger it on or off. What method can I use for Python/Ruby? I mean, what should I do to control the behavior of python/ruby scripts in such a way that I can change a variable that affects all the script files in a project?

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  • crashing out in a while loop python

    - by Edward
    How to solve this error? i want to pass the values from get_robotxya() and get_ballxya() and use it in a loop but it seems that it will crash after awhile how do i fix this? i want to get the values whithout it crashing out of the while loop import socket import os,sys import time from threading import Thread HOST = '59.191.193.59' PORT = 5555 COORDINATES = [] def connect(): globals()['client_socket'] = socket.socket(socket.AF_INET, socket.SOCK_STREAM) client_socket.connect((HOST,PORT)) def update_coordinates(): connect() screen_width = 0 screen_height = 0 while True: try: client_socket.send("loc\n") data = client_socket.recv(8192) except: connect(); continue; globals()['COORDINATES'] = data.split() if(not(COORDINATES[-1] == "eom" and COORDINATES[0] == "start")): continue if (screen_width != int(COORDINATES[2])): screen_width = int(COORDINATES[2]) screen_height = int(COORDINATES[3]) return def get_ballxy(): update_coordinates() ballx = int(COORDINATES[8]) bally = int(COORDINATES[9]) return ballx,bally def get_robotxya(): update_coordinates() robotx = int(COORDINATES[12]) roboty = int(COORDINATES[13]) angle = int(COORDINATES[14]) return robotx,roboty,angle def print_ballxy(bx,by): print bx print by def print_robotxya(rx,ry,a): print rx print ry print a def activate(): bx,by = get_ballxy() rx,ry,a = get_robotxya() print_ballxy(bx,by) print_robotxya(rx,ry,a) Thread(target=update_coordinates).start() while True: activate() this is the error i get:

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  • Adjust OSX System Audio Volume in Python

    - by Benson
    I would like to adjust the system audio volume in OSX from a python script. This question about implementing keyboard shortcuts tells me how to do it in applescript, but I'd really like to do it from my python script without using os.system, popen, etc. Ideally I'd like to ramp up the volume slowly with some python code like this: set_volume(0) for i in range(50): set_volume(i*2) time.sleep(1)

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  • how to install python-spidermonkey on windows

    - by paul
    Hello all, im making some script with python mechanize, one of problem is it really hard to find which support javascript supported web client scraping or crawler. actually i was found some such as python-spidermonkey and pykhtml and so on. but most of all only support on linux . i want to make my python script with exe file. so definitely i have to install on windows platform. my question is ..are there any method to can install python-spidermonkey or pykhtml on windows platform? i really need to support windows platform. if anyone can hint or help really appreicate! thanks in advance Paul

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  • ImageChops.duplicate - python

    - by ariel
    Hi I am tring to use the function ImageChops.dulpicate from the PIL module and I get an error I don't understand: this is the code import PIL import Image import ImageChops import os PathDemo4a='C:/Documents and Settings/Ariel/My Documents/My Dropbox/lecture/demo4a' PathDemo4b='C:/Documents and Settings/Ariel/My Documents/My Dropbox/lecture/demo4b' PathDemo4c='C:/Documents and Settings/Ariel/My Documents/My Dropbox/lecture/demo4c' PathBlackBoard='C:/Documents and Settings/Ariel/My Documents/My Dropbox/lecture/BlackBoard.bmp' Slides=os.listdir(PathDemo4a) for slide in Slides: #BB=Image.open(PathBlackBoard) BB=ImageChops.duplicate(PathBlackBoard) #BB=BlackBoard and this is the error; Traceback (most recent call last): File "", line 1, in ImageChops.duplicate('c:/1.BMP') File "C:\Python26\lib\site-packages\PIL\ImageChops.py", line 57, in duplicate return image.copy() AttributeError: 'str' object has no attribute 'copy' any help would be much appriciated Ariel

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  • datetime command line argument in python 2.4

    - by Ike Walker
    I want to pass a datetime value into my python script on the command line. My first idea was to use optparse and pass the value in as a string, then use datetime.strptime to convert it to a datetime. This works fine on my machine (python 2.6), but I also need to run this script on machines that are running python 2.4, which doesn't have datetime.strptime. How can I pass the datetime value to the script in python 2.4? Here's the code I'm using in 2.6: parser = optparse.OptionParser() parser.add_option("-m", "--max_timestamp", dest="max_timestamp", help="only aggregate items older than MAX_TIMESTAMP", metavar="MAX_TIMESTAMP(YYYY-MM-DD HH24:MM)") options,args = parser.parse_args() if options.max_timestamp: # Try parsing the date argument try: max_timestamp = datetime.datetime.strptime(options.max_timestamp, "%Y-%m-%d %H:%M") except: print "Error parsing date input:",sys.exc_info() sys.exit(1)

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  • Python/MySQL fails under Windows

    - by AP257
    I'm trying to get Python 2.6 to communicate with MySQL Server 5.1, under Windows XP, but I keep getting a strange error, "SystemError: NULL object passed to Py_BuildValue": >>> import MySQLdb as mysql >>> db = mysql.connect(user = "root", passwd="whatever", db="mysql", host="localh ost") >>> cu = db.cursor() >>> cu.execute("show tables") Traceback (most recent call last): File "<stdin>", line 1, in <module> File "C:\dirr\lib\site-packages\MySQLdb\cursors.py", line 173, in execu te self.errorhandler(self, exc, value) File "C:\ dirr\lib\site-packages\MySQLdb\connections.py", line 36, in de faulterrorhandler raise errorclass, errorvalue SystemError: NULL object passed to Py_BuildValue I thought it might be a character set problem, but I've tried setting and setting MySQL as UTF-8, and it hasn't made a difference. I guess there must be a problem with python-mysql. Can anyone help? UPDATE OK, python-mysql under windows is a bit of a nightmare, particularly with Python 2.6 it seems. Rather than installing python-mysql with pip, use this installer instead. That fixed it.

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  • How to control a subthread process in python?

    - by SpawnCxy
    Code first: '''this is main structure of my program''' from twisted.web import http from twisted.protocols import basic import threading threadstop = False #thread trigger,to be done class MyThread(threading.Thread): def __init__(self): threading.Thread.__init__(self) self.start() def run(self): while True: if threadstop: return dosomething() '''def some function''' if __name__ == '__main__': from twisted.internet import reactor t = MyThread() reactor.listenTCP(serverport,myHttpFactory()) reactor.run() As my first multithread program,I feel happy that it works as expected.But now I find I cannot control it.If I run it on front,Control+C can only stop the main process,and I can still find it in processlist;if I run it in background,I have to use kill -9 pid to stop it.And I wonder if there's a way to control the subthread process by a trigger variale,or a better way to stop the whole process other than kill -9.Thanks.

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