Hi!
I have a python script which returns an Integer value. How do I call
this script from a C programe, and use the result returned?
Thanks for your time. 5 2565
Shuaib wrote:
Hi!
I have a python script which returns an Integer value. How do I call
this script from a C programe, and use the result returned?
Thanks for your time.
This is actually a C question, not a Python question.
If all you need is the return value of the program, consider looking up
the system() call. For more control, variations on popen and fork/exec
may be fruitful on Unix (presumably OS X too), or CreateProcess* on
MS-Windows.
For more detailed help, try comp.unix.progr ammer or
comp.os.ms-windows.program mer (or a similar newsgroup for whatever OS
you're using).
Shuaib wrote:
Hi!
I have a python script which returns an Integer value. How do I call
this script from a C programe, and use the result returned?
To avoid confusion and possible irrelevant responses, please say which
of the following options best matches your requirement:
(a) your Python script is capable of being run from the command line,
and "returns" an integer value by calling sys.exit(that_v alue) -- you
wish to execute the script from a C program [the same way you would
execute a shell script / awk script / ...] and pick up the return value
[which may be limited by the OS to range(0, 128)]
(b) your script is a module, containing a function that returns an
integer. You wish to create an embedded Python interpreter, import
yourmodule, call yourmodule.your func, convert the returned Python int
to a C int, and use it.
(c) none of the above
Cheers,
John
John Machin wrote:
Shuaib wrote:
Hi!
I have a python script which returns an Integer value. How do I call
this script from a C programe, and use the result returned?
To avoid confusion and possible irrelevant responses, please say which
of the following options best matches your requirement:
(a) your Python script is capable of being run from the command line,
and "returns" an integer value by calling sys.exit(that_v alue) -- you
wish to execute the script from a C program [the same way you would
execute a shell script / awk script / ...] and pick up the return value
[which may be limited by the OS to range(0, 128)]
(b) your script is a module, containing a function that returns an
integer. You wish to create an embedded Python interpreter, import
yourmodule, call yourmodule.your func, convert the returned Python int
to a C int, and use it.
(b) it is. :)
Shuaib wrote:
John Machin wrote:
Shuaib wrote:
Hi!
>
I have a python script which returns an Integer value. How do I call
this script from a C programe, and use the result returned?
To avoid confusion and possible irrelevant responses, please say which
of the following options best matches your requirement:
(a) your Python script is capable of being run from the command line,
and "returns" an integer value by calling sys.exit(that_v alue) -- you
wish to execute the script from a C program [the same way you would
execute a shell script / awk script / ...] and pick up the return value
[which may be limited by the OS to range(0, 128)]
(b) your script is a module, containing a function that returns an
integer. You wish to create an embedded Python interpreter, import
yourmodule, call yourmodule.your func, convert the returned Python int
to a C int, and use it.
(b) it is. :)
Then you need to read the Python manuals (surprise, surprise); in
particular here's a section that gives you most if not all of what you
want : http://docs.python.org/ext/pure-embedding.html
but I'd suggest that you start reading a few pages back from there.
HTH,
John
John Machin wrote:
>
Then you need to read the Python manuals (surprise, surprise); in
particular here's a section that gives you most if not all of what you
want :
http://docs.python.org/ext/pure-embedding.html
but I'd suggest that you start reading a few pages back from there.
HTH,
John
Thanks, that'll help. This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics |
by: Brandon J. Van Every |
last post by:
I'm realizing I didn't frame my question well.
What's ***TOTALLY COMPELLING*** about Ruby over Python? What makes you jump
up in your chair and scream "Wow! Ruby has *that*? That is SO FRICKIN'
COOL!!! ***MAN*** that would save me a buttload of work and make my life
sooooo much easier!"
As opposed to minor differences of this feature here, that feature there.
Variations on style are of no interest to me. I'm coming at this from a...
|
by: Ralph Sluiters |
last post by:
Hi,
i've got a small problem with my python-script. It is a cgi-script, which is
called regulary (e.g. every 5 minutes) and returns a xml-data-structure.
This script calls a very slow function, with a duration of 10-40 seconds. To
avoid delays, i inserted a cache for the data. So, if the script is called,
it returns the last caculated data-structure and then the function is called
again and the new data is stored in the cache. (There is no...
|
by: Eyal |
last post by:
Hey,
I would appriciate if anyone can help on this one:
I have a java object/inteface having a method with a boolean
parameter. As I'm trying to call this method from a javascript it
fails on a type mismatch.
It is positively because of the boolean(java primitive)parameter. It
goes fine if I change this parameter to int or String.
This inteface has a lot more methods which works fine, it is just the
|
by: robert.differentone |
last post by:
Could anybody tell me how to call python modules from C.
e.g. my Python module :
def add(a,b)
return(a+b)
How can I call "add.py" from C? Please post any simple example.
I have read Python embedding in Python Manual but I get "ImportError"
all the time?
|
by: Zeez |
last post by:
Hi all,
I have a webpage that calls a webservice found on a remote computer.
Below is the code of my webpage:
=====================================
<html>
<head>
<script language="JavaScript">
var iCallID;
| |
by: Shuaib |
last post by:
Hey!
How do I call a python script from a C programme, and get results from
the python script (which is just a single integer value)?
Thanks.
|
by: joeedh |
last post by:
Hi I'm getting extremely odd behavior. First of all, why isn't
PyEval_EvalCode documented anywhere? Anyway, I'm working on
blender's
python integration (it embeds python, as opposed to python embedding
it). I have a function that executes a string buffer of python code,
fetches a function from its global dictionary then calls it.
When the function code returns a local variable, PyObject_Call()
appears
to be returning garbage. ...
|
by: Alchemist |
last post by:
I am using Python 2.4 and Postgresql 8.2 database server.
On the database I have created a stored function, example,
CREATE OR REPLACE FUNCTION calculateaverage()
I created a new python script and would like to call my database
stored function.
How can I call a database stored function/procedure in python?
|
by: marktang |
last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However, people are often confused as to whether an ONU can Work As a Router. In this blog post, we’ll explore What is ONU, What Is Router, ONU & Router’s main usage, and What is the difference between ONU and Router. Let’s take a closer look !
Part I. Meaning of...
|
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: Oralloy |
last post by:
Hello folks,
I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>".
The problem is that using the GNU compilers, it seems that the internal comparison operator "<=>" tries to promote arguments from unsigned to signed.
This is as boiled down as I can make it.
Here is my compilation command:
g++-12 -std=c++20 -Wnarrowing bit_field.cpp
Here is the code in...
| |
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: agi2029 |
last post by:
Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing, and deployment—without human intervention. Imagine an AI that can take a project description, break it down, write the code, debug it, and then launch it, all on its own....
Now, this would greatly impact the work of software developers. The idea...
|
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: muto222 |
last post by:
How can i add a mobile payment intergratation into php mysql website.
| | |