C++/Python function call

[Rami Chowdhury]

Hi Zohair,

On Tuesday 29 June 2010 05:24:26 Zohair M. Abu Shaban wrote:
> Dear Rami,
> 
> Thanks for your reply. I am using hardware that uses some libraries on
> Linux. def set_time_at_next_pps(*args, **kwargs):
>         """set_time_at_next_pps(self, usrp2::time_spec_t time_spec) ->
> bool""" return _usrp2.usrp2_base_set_time_at_next_pps(*args, **kwargs)
> 
> This is actually a definition of a function in C++ transformed to python.
> It receives a structure parameter and returns boolean the structure is
> defined like this: in a library called libusrp2.so and the header file is
> usrp2.h
> 
>   typedef struct time_spec{
>       uint32_t secs;
>       uint32_t ticks;
>       time_spec(void){
>         secs = ~0;
>         ticks = ~0;
>       }
>       time_spec(uint32_t new_secs, uint32_t new_ticks = 0){
>         secs = new_secs;
>         ticks = new_ticks;
>       }
>   } time_spec_t;
> 
> in my python code I wrote:
> zeroise=usrp2.time_spec_t(0,0)
> self.$(id).set_time_at_next_pps(zeroise)
> 
> The error Iam receiveing is :
>     zeroise=usrp2.time_spec_t(0,0)
> AttributeError: 'module' object has no attribute 'time_spec_t'
> 

Thank you for the details. Could you let me know how you're accessing the C++ 
code? Are you using ctypes? Are you using a Python extension module that wraps 
the C++ code? Some other method?

> MY PROBLEM THAT I NEED HELP FOR IS:
> 1- Am I using the structure correctly?
> 2- Am I invoking the python definition correctly?

I'd guess not, since you're getting an error ;-)

> 
> Thanks againg for your help.
> 
> JZK
> 
> Zohair
> 
> > From: rami.chowdhury at gmail.com
> > To: python-list at python.org
> > Subject: Re: C++/Python function call
> > Date: Mon, 28 Jun 2010 13:05:20 -0700
> > CC: zohair_ms at hotmail.com
> > 
> > On Monday 28 June 2010 12:46:13 Zohair M. Abu Shaban wrote:
> > > Hello every one:
> > > 
> > > 
> > > I have this python function defined as:
> > > 
> > > def set_time_at_next_pps(self, *args, **kwargs):
> > >      """set_time_at_next_pps(self, usrp2::time_spec_t time_spec)
> > > 
> > > -> bool"""
> > > 
> > > 
> > > 
> > > it was generated to do the same function as the c++:
> > > 
> > > set_time_at_next_pps(usrp2::time_spec_t(0, 0))
> > > 
> > > 
> > > I am new to python and don't know hoe to use this python syntax.
> > > 
> > >  Any hint or help please?
> > 
> > Can you give us a little more information? What do you need to use it
> > for?
> > 
> > > Cheers
> > > 
> > > 
> > > Zoh
> > > _________________________________________________________________
> > > http://clk.atdmt.com/UKM/go/197222280/direct/01/
> > > Do you have a story that started on Hotmail? Tell us now
> > 
> > ----
> > Rami Chowdhury
> > "Given enough eyeballs, all bugs are shallow." -- Linus' Law
> > +1-408-597-7068 / +44-7875-841-046 / +88-01819-245544
> 
> _________________________________________________________________
> http://clk.atdmt.com/UKM/go/197222280/direct/01/
> Do you have a story that started on Hotmail? Tell us now

----
Rami Chowdhury
"It always takes longer than you expect, even when you take Hofstadter's
Law into account." -- Hofstadter's Law
+1-408-597-7068 / +44-7875-841-046 / +88-01819-245544