Save/restore breakpoints between pdb runs
ed at edgewood.to
Fri Jul 11 21:16:19 CEST 2014
I've recently started using Python for my job (as opposed to writing
smallish scripts for personal use), and so have needed to debug quite a
I've been using pdb mainly via 'python -m pdb script args'. Perhaps
it's my Java background, but even when I have permissions to change the
source, I find editing source to insert 'import pdb; pdb.set_trace()'
unnatural. The consequence is that I have to recreate my breakpoints
when I have to exit pdb.
I've written the following code, which I load from .pdbrc with
Is there an alternate solution to keeping persistant breakpoints that
works much better? My python editing happens on a lot of different
machines/VMs, so I prefer alternate solutions that allow me to sync over
a couple of files, not install new binaries.
1) If is there a way in pdb to set a breakpoint on a function that isn't
in the current file? I can see the .funcname property of the
breakpoint, and would prefer restoring breakpoints on functions so they
don't break if I change line numbers. "b func_name" works in the
current file, but "b file:func_name" doesn't.
2) Is there a way to list the commands for each breakpoint, so that they
can be restored as well?
Any other comments or suggestions for improvement would be welcome.
bp_num = 0
for bp in pdb.bdb.Breakpoint.bpbynumber:
# pdb commands operate on breakpoint number, so keep track of
# the number the recreated breakpoint would have
if bp is None:
bp_num += 1
command = 'tbreak' if bp.temporary else 'b'
cond = '' if bp.cond is None else ', ' + bp.cond
print("%s %s:%d%s" % (command, bp.file, bp.line, cond))
if not bp.enabled:
print("disable %d" % (bp_num))
if bp.ignore > 0:
print("ignore %d %d" % (bp_num, bp.ignore))
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