[Libguestfs] [PATCH nbdkit] python: Print readable tracebacks

[Richard W.M. Jones]

On Sat, Nov 23, 2019 at 05:06:41AM +0200, Nir Soffer wrote:
> We used traceback.format_exception, returning traceback lines. Join the
> lines to make the tracebacks more readable.
> 
> Here is an example traceback:
> 
> $ ./nbdkit -f -v python tests/python-exception.py
> ...
> nbdkit: debug: python: config_complete
> nbdkit: error: tests/python-exception.py: config_complete: error: Traceback (most recent call last):
>    File "tests/python-exception.py", line 51, in config_complete
>     raise RuntimeError("this is the test string")
>  RuntimeError: this is the test string
> ---
>  plugins/python/python.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/plugins/python/python.c b/plugins/python/python.c
> index 148097f..71fa2e3 100644
> --- a/plugins/python/python.c
> +++ b/plugins/python/python.c
> @@ -167,7 +167,7 @@ print_python_traceback (const char *callback,
>                                       type, error, traceback, NULL);
>    if (rv == NULL)
>      return -1;
> -  traceback_str = PyObject_Str (rv);
> +  traceback_str = PyUnicode_Join (NULL, rv);
>    Py_DECREF (rv);
>    traceback_cstr = python_to_string (traceback_str);
>    if (traceback_cstr == NULL) {

ACK and pushed, thanks.

Rich.

-- 
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
Read my programming and virtualization blog: http://rwmj.wordpress.com
virt-p2v converts physical machines to virtual machines.  Boot with a
live CD or over the network (PXE) and turn machines into KVM guests.
http://libguestfs.org/virt-v2v