473,594 Members | 2,756 Online
Bytes | Software Development & Data Engineering Community
+ Post

Home Posts Topics Members FAQ

Generating exceptions from C

Hi,

I'm working on a python module written in C, and I'm trying to figure
out how to raise python
exceptions if a function fails. So far I've read
http://docs.python.org/ext/errors.html and
http://docs.python.org/api/exceptionHandling.html , but I've not fully
understood it.

I've managed to create the custom exception type using
PyErr_NewExcept ion(), and if I do
PyErr_SetString () the exception will get raised. Some questions:

1. PyErr_NewExcept ion() creates the exception _class_, not the instance
right ?

2. Is PyErr_SetString () the correct way to raise exceptions ?

3. Besides the error message I pass to PyErr_SetString (), I also want to
pass additional return
data together with the exception. But this should be attached to the
exception _instance_,
not the class, am I right ?

4. If I am supposed to attach it to the exception instance, how would I
do that ? I never have a
pointer to the exception instance, just the class.

--Jacob

Mar 18 '06 #1
0 791

This thread has been closed and replies have been disabled. Please start a new discussion.

Similar topics

4
1708
by: Marcin Rzeznicki | last post by:
Hello, Is it possible to generate dump file at some execution point in managed application? I would like to be able to gather information about exceptions and their context from users running my app - if I handle some relevant exception, besides informing user of failure, I'd like to enable him to send me dump file in order to analyze what actually went wrong and perform some maintenance/debugging on my own. It would be also nice if I...
1
2375
by: Anonieko | last post by:
Understanding and Using Exceptions (this is a really long post...only read it if you (a) don't know what try/catch is OR (b) actually write catch(Exception ex) or catch{ }) The first thing I look for when evaluating someone's code is a try/catch block. While it isn't a perfect indicator, exception handling is one of the few things that quickly speak about the quality of code. Within seconds you might discover that the code author...
28
1578
by: Nutkin | last post by:
Basicly i have to make a program that calculates the distance between x and y points in 2d space. the code basicly goes like this 1. User says how many points they have (max of 10) 2. User enters points 3. Using sqrt( (x2-x1)^2 + (y2-y1)^2) ) It calculates the distance
0
6491
RedSon
by: RedSon | last post by:
Chapter 3: What are the most common Exceptions and what do they mean? As we saw in the last chapter, there isn't only the standard Exception, but you also get special exceptions like NullPointerException or ArrayIndexOutOfBoundsException. All of these extend the basic class Exception. In general, you can sort Exceptions into two groups: Checked and unchecked Exceptions. Checked Exceptions are checked by the compiler at compilation time. Most...
0
7946
marktang
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...
0
8251
Oralloy
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...
1
8003
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,...
0
6654
agi2029
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...
1
5739
isladogs
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...
0
3859
by: TSSRALBI | last post by:
Hello I'm a network technician in training and I need your help. I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs. The last exercise I practiced was to create a LAN-to-LAN VPN between two Pfsense firewalls, by using IPSEC protocols. I succeeded, with both firewalls in the same network. But I'm wondering if it's possible to do the same thing, with 2 Pfsense firewalls...
0
3897
by: adsilva | last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
1
1478
muto222
by: muto222 | last post by:
How can i add a mobile payment intergratation into php mysql website.
0
1210
bsmnconsultancy
by: bsmnconsultancy | last post by:
In today's digital era, a well-designed website is crucial for businesses looking to succeed. Whether you're a small business owner or a large corporation in Toronto, having a strong online presence can significantly impact your brand's success. BSMN Consultancy, a leader in Website Development in Toronto offers valuable insights into creating effective websites that not only look great but also perform exceptionally well. In this comprehensive...

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.