How to debug embeding Python?

[Diez B. Roggisch]

Hongtian schrieb:
> Hi Friends,
> 
> My application is written in C/C++ and Python is embed to extend some
> functions (several .py files are invoked). But I am confused how to
> debug these embed Python? Can I use 'print-debuging'? and where can I
> capture the output string?
> 
> Or Python can support 'break' debug for such scenario?

You should be able to use the python debugger (pdb) by manually putting

import pdb; pdb.set_trace()

on a place that is of interest to you. Then if your program is started 
inside a shell, you should be able to step-debug it.

Additinoally, there is the very flexible & powerful logging-module that 
you can use to write logfiles. This is better than simple 
print-statements, as you can keep the logging statements around and just 
turn them on or off on demand.

Additionally, printing might not work reliably in cases where the 
stdout/err-streams aren't visible or otherwise in use. But the 
logging-module can log to files (or even system event logs *me thinks*)

Diez