Search Results

Search found 16680 results on 668 pages for 'python datetime'.

Page 619/668 | < Previous Page | 615 616 617 618 619 620 621 622 623 624 625 626  | Next Page >

• One large file or multiple small files?

  - by Dan

  I have an application (currently written in Python as we iron out the specifics but eventually it will be written in C) that makes use of individual records stored in plain text files. We can't use a database and new records will need to be manually added regularly. My question is this: would it be faster to have a single file (500k-1Mb) and have my application open, loop through, find and close a file OR would it be faster to have the records separated and named using some appropriate convention so that the application could simply loop over filenames to find the data it needs? I know my question is quite general so direction to any good articles on the topic are as appreciated as much as suggestions. Thanks very much in advance for your time, Dan

  Read the article

• interesting Delphi open-source applications/projects (not components/component packs!)

  - by vic

  Hi, I'd like to know what interesting open-source projects written in Delphi (or FreePascal) you know? I'm not asking for components/components packs, I know there were questions for that. Please do not duplicate answers, vote them up instead ;) Please do not point components/packs/closed-source projects. Please provide at least word of description ;) Two examples from me: PyScripter - Python IDE written in Delphi - hosted at google code (*) HeidiSQL - MySQL Frontend - http://www.heidisql.com/ (*)sorry, as a new user I can't post more than one link :(

  Read the article

• django sending emails

  - by dotty

  Hay, i can't seem to send emails using send_mail(), and I'm not sure why. Here's my details settins.py EMAIL_HOST = 'localhost', EMAIL_PORT = 25 My view from django.core.mail import send_mail send_mail('Subject here', 'Here is the message.', '[email protected]', ['[email protected]'], fail_silently=False) This fails with the error getaddrinfo() argument 1 must be string or None Anyone have any ideas? I'm developing on OS X Leopard Heres the last traceback /System/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/smtplib.py in connect for res in socket.getaddrinfo(host, port, 0, socket.SOCK_STREAM): ... ? Local vars Variable Value host ('localhost',) msg 'getaddrinfo returns an empty list' port 25 self <smtplib.SMTP instance at 0x153b1e8>

  Read the article

• Mercurial in Windows doesn't see .hgignore - why?

  - by AP257

  Windows fails to pick up my .hgignore file. I'm running Mercurial from the command line, and "hg status" shows lots of files in the ignored directories. The .hgignore file looks like this (there's no whitespace at the start of the file, or at the start of each line). I've put it in the root directory of the repository. \.pyc$ \.pyo$ \.DS_Store \.Python \.installed.cfg ^bin$ ^build$ ^develop-eggs$ ^eggs$ ^include$ ^lib$ ^parts$ ^pip-log.txt$ ^web/localsettings.py$ I've tried saving the file in ANSI and UTF-8, and it doesn't seem to make a difference. I know the file is working OK on Linux, is there anything different about the paths in Windows?

  Read the article

• What (kind of) project could I create to learn JavaScript?

  - by Aziz Light

  Hello, I started learning JavaScript a while ago. It's a fairly easy programming language considering that I learned Java in university, that I know php pretty well and that I already played around with python and ruby. The problem is that to properly learn a programming language I usually create a project. In javascript, I just don't know what kind of project I could create - that is, a project that is not web-based or related to the web browser. Can I create javascript shell scripts? Where is javascript commonly used beside the web browsers? So, can someone actually give me some ideas please?

  Read the article

• iTunes Apple Events API

  - by jldupont

  I'd like to control iTunes through Objective-C ( I just can't get Python appscript installed correctly on my OS/X 10.6.3 system ... that would have been my first choice ). From what I gather, the IPC on Cocoa is based on Apple Events : is there either: Online documentation on iTunes / Apple Events API ? Instrospection mechanism to get to iTunes API? I know about Applescript Editor / Open Dictionary functionality but I can't figure out how to translate the information I see into IPC calls. Note: I have already tried working out a solution through PyObjC but the main function I am after is track searching which I can't figure out. Disclaimer: OS/X super-newbie here.

  Read the article

• Problem with between join for sqlalchemy orm relation.

  - by Gary van der Merwe

  I'm trying to create a relation that has a between join. Here is a shortish example of what I'm trying to do: #!/usr/bin/env python import sqlalchemy as sa from sqlalchemy import orm from sqlalchemy.engine.base import Engine from sqlalchemy.ext.declarative import declarative_base metadata = sa.MetaData() Base = declarative_base(metadata=metadata) engine = sa.create_engine('sqlite:///:memory:') class Network(Base): __tablename__ = "network" id = sa.Column(sa.Integer, primary_key=True) ip_net_addr_db = sa.Column('ip_net_addr', sa.Integer, index=True) ip_broadcast_addr_db = sa.Column('ip_broadcast_addr', sa.Integer, index=True) # This can be determined from the net address and the net mask, but we store # it in the db so that we can join with the address table. ip_net_mask_len = sa.Column(sa.SmallInteger) class Address(Base): __tablename__ = "address" ip_addr_db = sa.Column('ip_addr', sa.Integer, primary_key=True, index=True, unique=True) Network.addresses = orm.relation(Address, primaryjoin=Address.ip_addr_db.between( Network.ip_net_addr_db, Network.ip_broadcast_addr_db), foreign_keys=[Address.ip_addr_db]) metadata.create_all(engine) Session = orm.sessionmaker(bind=engine) Network() I you run this, you get this error: ArgumentError: Could not determine relation direction for primaryjoin condition 'address.ip_addr BETWEEN network.ip_net_addr AND network.ip_broadcast_addr', on relation Network.addresses. Do the columns in 'foreign_keys' represent only the 'foreign' columns in this join condition ? The answer to that question is Yes, but I cant figure out how to tell it that

  Read the article

• How can one connect to an RFCOMM device other than another phone in Android?

  - by Charles Duffy

  The Android API provides examples of using listenUsingRfcommWithServiceRecord() to set up a socket and createRfcommSocketToServiceRecord() to connect to that socket. I'm trying to connect to an embedded device with a BlueSMiRF Gold chip. My working Python code (using the PyBluez library), which I'd like to port to Android, is as follows: sock = bluetooth.BluetoothSocket(proto=bluetooth.RFCOMM) sock.connect((device_addr, 1)) return sock.makefile() ...so the service to connect to is simply defined as channel 1, without any SDP lookup. As the only documented mechanism I see in the Android API does SDP lookup of a UUID, I'm slightly at a loss.

  Read the article

• How to use Netbeans platform syntax highlight with JEditorPane?

  - by Volta

  There are many tutorials online giving very complex or non-working examples on this. It seems that people recommend others to use the syntax highlighters offered by netbeans but I am totally puzzled on how to do so! I have checked many many sites on this and the best I can find is : http://www.antonioshome.net/kitchen/netbeans/nbms-standalone.php However I am still not able to use this example (as it is aimed to people who don't want to use the Netbeans platform but just a portion of it) and I am still not sure if I can just use syntax highlighting in a simple plug 'n play way. For example netbeans supports several language highlights by default, can I just use the highlighters in a JEditorPane to parse Ruby/Python/Java for example ? or do I need to write my own parser :-| ? I will really appreciate a small simple example on how to plug syntax highlight in a standalone application using the netbeans platform.

  Read the article

• haystack's RealTimeSearchIndex causes django to hang on data entry

  - by lsc

  I'm using django-haystack and a xapian backend with real time indexing (haystack.indexes.RealTimeSearchIndexing) of model data and it works fine on my Ubuntu server. However, it causes django to hang upon data entry when I deployed the app on a RHEL5 server. Everything is hunky dory if I switch to a standard SearchIndex. Running ./manage.py rebuild_index manually works fine too. The major differences between the two setups would be the versions of Python (2.4.3 vs 2.6.4) and the xapian (1.0.4-1 vs 1.0.15). Any suggestions on what may be the problem? Nothing interesting appears in the logs, and I've tried different databases (mysql, sqlite3) and deployment methods (mod_python, wsgi) with no luck yet. I have noted the warning on the haystack docs stating that RealTimeSearchIndex is only handled gracefully with a Solr backend, however I'm running a very traffic site with only occasional writes so I'm fine with some CPU overheads on writes.

  Read the article

• Running a shellscript from a C++ application and check if it succeeds

  - by Koning Baard

  I am creating an interpreter for my extension to HQ9+, which has the following extra command called V: V: Interpretes the code as Lua, Brainfuck, INTERCAL, Ruby, ShellScript, Perl, Python, PHP in that order, and if even one error has occoured, run the HQ9+-ABC code again most of them have libraries, BF and INTERCAL can be interpreted without a library, but the problem lies in ShellScript. How can I run a shellscript from my C++ application ( =the HQ9+-ABC interpreter) and when it's done, get the error code (0 = succeded, all others = failed)? So something like this: system(".tempshellscript738319939474"); if(errcode != 0) { (rerun code); } can anyone help me? Thanks

  Read the article

• Using comet with PHP?

  - by ryeguy

  I was thinking of implementing real time chat using a PHP backend, but I ran across this comment on a site discussing comet: My understanding is that PHP is a terrible language for Comet, because Comet requires you to keep a persistent connection open to each browser client. Using mod_php this means tying up an Apache child full-time for each client which doesn’t scale at all. The people I know doing Comet stuff are mostly using Twisted Python which is designed to handle hundreds or thousands of simultaneous connections. Is this true? Or is it something that can be configured around?

  Read the article

• How can I loop through variables in SPSS? I want to avoid code duplication.

  - by chucknelson

  Is there a "native" SPSS way to loop through some variable names? All I want to do is take a list of variables (that I define) and run the same procedure for them: pseudo-code - not really a good example, but gets the point across... for i in varlist['a','b','c'] do FREQUENCIES VARIABLES=varlist[i] / ORDER=ANALYSIS. end I've noticed that people seem to just use R or Python SPSS plugins to achieve this basic array functionality, but I don't know how soon I can get those configured (if ever) on my installation of SPSS. SPSS has to have some native way to do this...right?

  Read the article

• Parsing Indentation-based syntaxes in Haskell's Parsec

  - by pavpanchekha

  I'm trying to parse an indentation-based language (think Python, Haskell itself, Boo, YAML) in Haskell using Parsec. I've seen the IndentParser library, and it looks like it's the perfect match, but what I can't figure out is how to make my TokenParser into an indentation parser. Here's the code I have so far: import qualified Text.ParserCombinators.Parsec.Token as T import qualified Text.ParserCombinators.Parsec.IndentParser.Token as IT lexer = T.makeTokenParser mylangDef ident = IT.identifier lexer This throws the error: parser2.hs:29:28: Couldn't match expected type `IT.TokenParser st' against inferred type `T.GenTokenParser s u m' In the first argument of `IT.identifier', namely `lexer' In the expression: IT.identifier lexer In the definition of `ident': ident = IT.identifier lexer What am I doing wrong? How should I create an IT.TokenParser? Or is IndentParser broken and to be avoided?

  Read the article

• What does the symbol :=: mean

  - by Dan Maguire

  I've found the symbol :=: in some Clarion code and I can't seem to figure out exactly what it does. The code was written by a previous developer many years ago, so I can't ask him. I also have not been able to find any results for "colon equals colon" in Google. Here is an example of the code, where bufSlcdpaDtl is a file object: lCCRecord Like(bufSlcdpaDtl),Pre(lCCRecord) ! ...other stuff... lCCRecord :=: bufSlcdpaDtl I'm wondering if it's something similar to ::= in Python or possibly the assignment operator :=.

  Read the article

• Detecting syllables in a word

  - by user50705

  I need to find a fairly efficient way to detect syllables in a word. E.g., invisible - in-vi-sib-le There are some syllabification rules that could be used: V CV VC CVC CCV CCCV CVCC *where V is a vowel and C is a consonant. e.g., pronunciation (5 Pro-nun-ci-a-tion; CV-CVC-CV-V-CVC) I've tried few methods, among which were using regex (which helps only if you want to count syllables) or hard coded rule definition (a brute force approach which proves to be very inefficient) and finally using a finite state automata (which did not result with anything useful). The purpose of my application is to create a dictionary of all syllables in a given language. This dictionary will later be used for spell checking applications (using Bayesian classifiers) and text to speech synthesis. I would appreciate if one could give me tips on an alternate way to solve this problem besides my previous approaches. I work in Java, but any tip in C/C++, C#, Python, Perl... would work for me.

  Read the article

• Conky graph frozen in time

  - by dijxtra

  Is it possible to plot a graph in conky? Give a function a set of values 0-100 and conky plots a graph similar to execgraph? What I want is to visualize how a variable changed in last week. For example, I'd like to make a graph of gold prices in last 14 days. One way I could do that is use "execigraph 86400 python fetch_price_of_gold.py" and keep my box up 24/7 and eventually I'd get a nice graph. But, unfortunately my box isn't up 24/7. Not to mention I'd have to wait 14 days after every reboot ;-) So, any other ideas? :-)

  Read the article

• What language is to binary, as Perl is to text?

  - by ehdr

  I am looking for a scripting (or higher level programming) language (or e.g. modules for Python or similar languages) for effortlessly analyzing and manipulating binary data in files (e.g. core dumps), much like Perl allows manipulating text files very smoothly. Things I want to do include presenting arbitrary chunks of the data in various forms (binary, decimal, hex), convert data from one endianess to another, etc. That is, things you normally would use C or assembly for, but I'm looking for a language which allows for writing tiny pieces of code for highly specific, one-time purposes very quickly. Any suggestions?

  Read the article

• Why Tokyo Tyrant so slow

  - by Tantra

  I have follow situation tyrant server lunched on freebsd host, like this: ttserver -uas -log /data/tyrant/1.log -sid 1 -thnum 8 -tout 5 /data/tyrant/data/1.tct And i try to communicate this server on windows from python and pyrant-0.3.5: like this: import pyrant; import time; t = pyrant.Tyrant(host="192.168.0.220", port=1978); tbegin = time.time(); for i in xrange(4000000): if i and ((i % 10000) == 0): print time.time() - tbegin; tbegin = time.time(); t[i] = {"text": "ruslan text", "value": i}; and have i think very slow performance about 5-6 per 10,000 records. But if i start this code on the same machine like server(ttserver). Performance are good - about 0.5 sec per 10,000 records What i must do to workaround this problem?

  Read the article

• What programming language best bridges the gap between pseudocode and code?

  - by Kai

  As I write code from now on, I plan to first lay out everything in beautiful, readable pseudocode and then implement the program around that structure. If I rank the languages that I currently know from easiest to most difficult to translate, I'd say: Lisp, Python, Lua, C++, Java, C I know that each language has its strength and weaknesses but I'm focusing specifically on pseudocode. What language do you use that is best suited for pseudocode-to-code? I always enjoy picking up new languages. Also, if you currently use this technique, I'd love to hear any tips you have about structuring practical pseudocode. Note: I feel this is subjective but has a clear answer per individual preference. I'm asking this here because the SO community has a very wide audience and is likely to suggest languages and techniques that I would otherwise not encounter.

  Read the article

• Iterator blocks in Clojure?

  - by Checkers

  I am using clojure.contrib.sql to fetch some records from an SQLite database. (defn read-all-foo [] (with-connection *db* (with-query-results res ["select * from foo"] (into [] res)))) Now, I don't really want to realize the whole sequence before returning from the function (i.e. I want to keep it lazy), but if I return res directly or wrap it some kind of lazy wrapper (for example I want to make a certain map transformation on result sequence), SQL-related bindings will be reset and connection will be closed after I return, so realizing the sequence will throw an exception. How can I enclose the whole function in a closure and return a kind of iterator block (like yield in C# or Python)? Or is there another way to return a lazy sequence from this function?

  Read the article

• Essential skills of a Data Scientist

  - by harshsinghal

  I would like to know more about the relevant skills in the arsenal of a Data Scientist, and with new technologies coming in every day, how one picks and chooses the essentials. A few ideas germane to this discussion: Knowing SQL and the use of a DB such as MySQL, PostgreSQL was great till the advent of NoSql and non-relational databases. MongoDB, CouchDB etc. are becoming popular to work with web-scale data. Knowing a stats tool like R is enough for analysis, but to create applications one may need to add Java, Python, and such others to the list. Data now comes in the form of text, urls, multi-media to name a few, and there are different paradigms associated with their manipulation. What about cluster computing, parallel computing, the cloud, Amazon EC2, Hadoop ? OLS Regression now has Artificial Neural Networks, Random Forests and other relatively exotic machine learning/data mining algos. for company Thoughts?

  Read the article

• Adobe Socket Policy File Server Problems

  - by Matt

  Has anyone been able to successfully implement a service to serve the required socket policy file to FlashPlayer? I am running the Python implementation of the service provided by Adobe at http://www.adobe.com/devnet/flashplayer/articles/socket_policy_files.html and using the following policy file: <?xml version="1.0" encoding="UTF-8"?> <cross-domain-policy> <site-control permitted-cross-domain-policies="master-only"/> <allow-access-from domain="*" to-ports="*" secure="false"/> </cross-domain-policy> and receiving this message from Flash: [SecurityErrorEvent type="securityError" bubbles=false cancelable=false eventPhase=2 text="Error #2048: Security sandbox violation: http://www.mapopolis.com/family/Tree.swf cannot load data from www.mapopolis.com:1900."] Thanks.

  Read the article

• How can I programmatically read a Adobe DRM'd Epub?

  - by DEzra

  I am writing an ebook reader that supports the epub format (i have the parsing of open epub working), but I would like to support the reading of Adobe DRM locked epubs. I have read through the Adobe digital editions site (faq and support pages) and googled, but alas as yet I have not found any docs on the API to: authorise the PC using the user's Adobe ID credentials and decrypt the epub for parsing by my app. Does anyone have any pointers to docs or APIs? I would prefer APIs in Python, C++. But any API is better than nothing ;-) UPDATE1: I am writing my app on Desktops (linux, mac and windows). UPDATE2: Just to be clear, I am assuming that user has paid for the book legitimately and so does have an Adobe ID. I don't want to crack the DRM, just allow the user to read their books that they bought.

  Read the article

• mod_wsgi | linux installation error

  - by MMRUser

  I'm getting the following error when I try to install mod_wsgi ./configure checking for apxs2... no checking for apxs... /usr/sbin/apxs checking Apache version... 2.2.3 configure: creating ./config.status config.status: creating Makefile make /usr/sbin/apxs -c -I/usr/local/include/python2.6 -DNDEBUG mod_wsgi.c -L/usr/local/lib -L/usr/local/lib/python2.6/config -lpython2.6 -lpthread -ldl -lutil -lm /apr-1/build/libtool --silent --mode=compile gcc -prefer-pic -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m32 -march=i386 -mtune=generic -fasynchronous-unwind-tables -fno-strict-aliasing -DLINUX=2 -D_REENTRANT -D_GNU_SOURCE -D_LARGEFILE64_SOURCE -pthread -I/usr/include/httpd -I/usr/include/apr-1 -I/usr/include/apr-1 -I/usr/local/include/python2.6 -DNDEBUG -c -o mod_wsgi.lo mod_wsgi.c && touch mod_wsgi.slo sh: /apr-1/build/libtool: No such file or directory apxs:Error: Command failed with rc=8323072 . make: *** [mod_wsgi.la] Error 1 libtool is installed on my system.. mod_wsgi 3.2 *Apache 2.2* *Python 2.6*

  Read the article

< Previous Page | 615 616 617 618 619 620 621 622 623 624 625 626  | Next Page >