Re: How to call TPyException in Python?

From: OKUMURA, Akira <oxon_at_astro.isas.jaxa.jp>
Date: Tue, 3 May 2011 19:58:58 -0700

Hello Wim,

Thanks a lot.

What I want to do is to throw C++ exceptions from my C++ ROOT code, and catch them in PyROOT. I thought that it could be done by using PyROOT::TPyException. Because the explanation in its header says as follow.

---

http://root.cern.ch/root/html/PyROOT__TPyException.html Purpose: A C++ exception class for throwing python exceptions

         through C++ code.

---

But according to your comment, my understanding seems to be wrong. Is there any tutorial of TPyException?

Regards,

--
OKUMURA, Akira oxon@{astro.isas.jaxa.jp,stanford.edu}
Institute of Space and Astronautical Science (ISAS/JAXA)
Now at KIPAC/SLAC/Stanford
Varian Physics #306, 382 Via Pueblo Mall, MC 4060
Stanford, CA 94305-4060
TEL 650-736-0971/FAX 650-724-5065
Skype : okumura.akira

On 2011/05/03, at 19:43, wlavrijsen_at_lbl.gov wrote:



> Akira,

> 

>> TypeError: type 'instance' is not an acceptable base type


> 

> a quick look seems to indicate that ROOT.py is mistakenly creating class

> std.exception as a template instance, rather than a class. Will fix tomorrow.

> 

> I'm not sure why there's a complaint about not having a dictionary for

> exception, when the same does not happen with root.exe.

> 

> All that said, why care about TPyException from python? Its purpose is to

> be thrown from and caught by C++.

> 

> Best regards,

>          Wim

> -- 

> WLavrijsen_at_lbl.gov    --    +1 (510) 486 6411    --    www.lavrijsen.net

Received on Wed May 04 2011 - 04:59:14 CEST