Yes I did truncate the output, the backtrace was very long.

This is my scenario:

gdb --args ./gdb <somefile>

When the superior gdb loads, I did:

(top-gdb) b frapy_pc
(top-gdb) run

In the inferior gdb, I did:

(gdb) start
(gdb) py g = gdb.selected_frame()
(gdb) py print g.pc()

This will hit the breakpoint in the inferior gdb and you will be returned to the superior gdb.  I then did:

(top-gdb) py-bt