Hi guys!!!
Just one quick question... Which database module should I use when I
want to use multi threading as my application requires lots of data
from internet ???? I also want this database module to be fast, simple
n efficient, in any case multi threading capabilities are # 1
requirement.
Thanx Guys
Anil
19  2828 
jupiter wrote:
Hi guys!!!
Just one quick question... Which database module should I use when I
want to use multi threading as my application requires lots of data
from internet ???? I also want this database module to be fast, simple
n efficient, in any case multi threading capabilities are # 1
requirement.
Thanx Guys
Anil
See the threadsafety flag of Python DB-API V2 compliant database modules.
0 = no thread safe
1 = threads may share module
2 = + may share connections
3 = + may share cursors
A+
Laurent.
On Mar 10, 7:29 pm, Laurent Pointal <laurent.poin.. .@wanadoo.fr>
wrote:
jupiter wrote:
Hi guys!!!
Just one quick question... Which database module should I use when I
want to use multi threading as my application requires lots of data
from internet ???? I also want this database module to be fast, simple
n efficient, in any case multi threading capabilities are # 1
requirement.
Thanx Guys
Anil
See the threadsafety flag of Python DB-API V2 compliant database modules.
0 = no thread safe
1 = threads may share module
2 = + may share connections
3 = + may share cursors
A+
Laurent.
Thanx for this pointer buddy! I have done my homework. Some Database
modules are not actively maintained some modules does not work with
Python 2.5. At this moment I am using Sqlite3 which is pretty fast but
it dosent allow me to use multi threading so which database module is
better in terms of multithreading
@
"jupiter" <an***********@ gmail.comwrites :
Hi guys!!!
Just one quick question... Which database module should I use when I
want to use multi threading as my application requires lots of data
from internet ???? I also want this database module to be fast, simple
n efficient, in any case multi threading capabilities are # 1
requirement.
For which database server?
--
Jorge Godoy <jg****@gmail.c om>
>
Thanx for this pointer buddy! I have done my homework. Some Database
modules are not actively maintained some modules does not work with
Python 2.5. At this moment I am using Sqlite3 which is pretty fast but
it dosent allow me to use multi threading so which database module is
better in terms of multithreading
Actually, I think sqlite3 just requires that each thread have its own
connection and cursor.
On Mar 10, 8:16 pm, Michael Bentley <rmc...@gmail.c omwrote:
Thanx for this pointer buddy! I have done my homework. Some Database
modules are not actively maintained some modules does not work with
Python 2.5. At this moment I am using Sqlite3 which is pretty fast but
it dosent allow me to use multi threading so which database module is
better in terms of multithreading
Actually, I think sqlite3 just requires that each thread have its own
connection and cursor.
I tried this approach with
for each new thread
self.c1=sqlite3 .connect('urls' )
self.c=self.c1. cursor()
check condition
insert if true else ignore
but no success
On Mar 10, 8:16 pm, Michael Bentley <rmc...@gmail.c omwrote:
Thanx for this pointer buddy! I have done my homework. Some Database
modules are not actively maintained some modules does not work with
Python 2.5. At this moment I am using Sqlite3 which is pretty fast but
it dosent allow me to use multi threading so which database module is
better in terms of multithreading
Actually, I think sqlite3 just requires that each thread have its own
connection and cursor.
Exception in thread Thread-2:
Traceback (most recent call last):
File "D:\Python25\li b\threading.py" , line 460, in __bootstrap
self.run()
File "url_part1. py", line 161, in run
dbacc(self.o, self.dbase).dat aenter()
File "url_part1. py", line 64, in dataenter
self.c.execute( 'insert into '+self.odbase+' values
(?,?,?,?,?,?,?, ?,?,?,?,?,
?)',self.odata)
InterfaceError: Error binding parameter 3 - probably unsupported type.
this is the error I am getting........ ........
jupiter <an***********@ gmail.comwrote:
...
Python 2.5. At this moment I am using Sqlite3 which is pretty fast but
it dosent allow me to use multi threading so which database module is
better in terms of multithreading
Perhaps psycopg2 (with PostgreSQL as the engine), according to
<http://cheeseshop.pyth on.org/pypi/psycopg2/2.0.2it is specifically
"designed for heavily multi-threaded applications that create and
destroy lots of cursors and make a conspicuous number of concurrent
INSERTs or UPDATEs".
Alex
On Mar 10, 8:42 pm, a...@mac.com (Alex Martelli) wrote:
jupiter <anil.jupit...@ gmail.comwrote:
...
Python 2.5. At this moment I am using Sqlite3 which is pretty fast but
it dosent allow me to use multi threading so which database module is
better in terms of multithreading
Perhaps psycopg2 (with PostgreSQL as the engine), according to
<http://cheeseshop.pyth on.org/pypi/psycopg2/2.0.2it is specifically
"designed for heavily multi-threaded applications that create and
destroy lots of cursors and make a conspicuous number of concurrent
INSERTs or UPDATEs".
Alex
conn = psycopg2.connec t("dbname=tes t user=test")
Traceback (most recent call last):
File "<pyshell#8 >", line 1, in <module>
conn = psycopg2.connec t("dbname=tes t user=test")
OperationalErro r: could not connect to server: Connection refused
(0x0000274D/10061)
Is the server running on host "???" and accepting
TCP/IP connections on port 5432?
this is the error I am getting with psycopg2 I want to access a local
file
"jupiter" <an***********@ gmail.comwrites :
conn = psycopg2.connec t("dbname=tes t user=test")
Traceback (most recent call last):
File "<pyshell#8 >", line 1, in <module>
conn = psycopg2.connec t("dbname=tes t user=test")
OperationalErro r: could not connect to server: Connection refused
(0x0000274D/10061)
Is the server running on host "???" and accepting
TCP/IP connections on port 5432?
this is the error I am getting with psycopg2 I want to access a local
file
PostgreSQL is a server, it access the files. You talk to the RDBMS server.
Is it running? Is it accepting connections from your host?
--
Jorge Godoy <jg****@gmail.c om> This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics | |
by: Michael |
last post by:
Don't shoot me down guys, I know the Standard says nothing of threads and
all....
As i understand it the STL does not support multithreading, however I want
to use the STL in a multithreaded environment.
Is it sufficient to declare a bool variable 'Locked' which process set when
they are using a particular object or do I need to consult some more low
level platform-kernel documentation??
Regards
|
by: mihai |
last post by:
What does the standard say about those two? Is any assurance that the
use of STL is thread safe?
Have a nice day,
Mihai.
|
by: a |
last post by:
Hello,
I am doing some multithreading in an MDI app, and I can't seem to get the
cursor to stay as an Hourglass. I call:
Cursor.Current = cursors.wait
at the beginning of my routing, and set it back to cursors.default when the
thread ends (using a callback)
|
by: darlene |
last post by:
Hi,
I need some help in creating an application in Visual C++ which should make use of MFC and multithreading. The application is supposed to consist in a number of threads representing factories. Each factory, implemented as a thread, can create only one type of the objects below: wheels, windows, doors, chassis or engines. From the GUI an user should be able to add a new factory or delete an existing one by specifying its type (eg. engine...
|
by: Brit |
last post by:
I have an ASP file that retrieves names from an Access database for 4 different categories of membership, which the visitor to the page selects (corporate, institutional, regular, or student). The DNS name is "cati", the names are specified in the "Last_names" field, and the categories are in the "categories" field.
l want the results sorted in alphabetic order by last name. However, the results appear to be in a totally random,...
| | |
by: joop renes |
last post by:
hi,
i hope this is the right list for the following question of a c++
hacker,python newbie. i have a library in c++ to which i want to add a
python GUI and other python stuff.The library has multithreading
components, while python uses a reference counted memory model. Usually
mixing reference counting with multithreading is frowned upon, at least
in the c++ world. what am i to expect in the python world, if i bring
multithreading c++...
|
by: Gabriel Genellina |
last post by:
En Sun, 04 May 2008 11:56:14 -0300, joop renes <jj.renes@hccnet.nlescribió:
Python objects are reference counted, *and* you can have many threads running. This is not a problem in itself; Python has a Global Interpreter Lock (GIL) that ensures that addref/releases are properly handled. Only one thread at a time can execute Python code; but your C++ library can use as many threads as you want - as long as they don't call Python code again...
|
by: Hystou |
last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can effortlessly switch the default language on Windows 10 without reinstalling. I'll walk you through it.
First, let's disable language synchronization. With a Microsoft account, language settings sync across devices. To prevent any complications,...
|
by: jinu1996 |
last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven tapestry of website design and digital marketing. It's not merely about having a website; it's about crafting an immersive digital experience that captivates audiences and drives business growth.
The Art of Business Website Design
Your website is...
|
by: Hystou |
last post by:
Overview:
Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For most users, this new feature is actually very convenient. If you want to control the update process,...
|
by: tracyyun |
last post by:
Dear forum friends,
With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each protocol has its own unique characteristics and advantages, but as a user who is planning to build a smart home system, I am a bit confused by the choice of these technologies. I'm particularly interested in Zigbee because I've heard it does some...
| | |
by: isladogs |
last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM).
In this session, we are pleased to welcome a new presenter, Adolph Dupré who will be discussing some powerful techniques for using class modules.
He will explain when you may want to use classes instead of User Defined Types (UDT). For example, to manage the data in unbound forms.
Adolph will...
|
by: conductexam |
last post by:
I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and then checking html paragraph one by one.
At the time of converting from word file to html my equations which are in the word document file was convert into image.
Globals.ThisAddIn.Application.ActiveDocument.Select();...
|
by: adsilva |
last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
|
by: 6302768590 |
last post by:
Hai team
i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated we have to send another system
|
by: muto222 |
last post by:
How can i add a mobile payment intergratation into php mysql website.
| |
