def setbreak(line=None, file=None, cond=None, temp=0, frame=None, throw=False):
"""set a breakpoint or a given line in file with conditional
arguments:
line - line number on which to break
file - module or filename where the breakpoint should be set
cond - string with conditional expression, which (if given) must
evaluate to true to break
temp - if true, create a temporary breakpoint
example usage:
setbreak(42, "/path/to/universe.py", "name == 'hitchhiker'")
setbreak(35, "package.module")
see: http://groups.google.com/group/comp.lang.python/browse_thread/thread/103326200285cb07#
"""
if frame is None:
frame = sys._getframe().f_back
if file is None:
file = frame.f_code.co_filename
elif not file.startswith("file:") and os.path.sep not in file:
try:
mod = __import__(file, globals(), locals(), ["__file__"])
except ImportError as err:
if throw:
raise
sys.__stdout__.write("cannot set breakpoint: %s:%s : %s" %
(file, line, err))
return
file = mod.__file__
sys.__stdout__.write("breaking in: %s" % file)
if file.endswith(".pyc"):
file = file[:-1]
pdb = Pdb(stdout=sys.__stdout__) # use sys.__stdout__ to work with nose tests
pdb.reset()
pdb.curframe = frame
while frame:
frame.f_trace = pdb.trace_dispatch
pdb.botframe = frame
frame = frame.f_back
templine = line
while templine < line + 10:
error = pdb.set_break(file, templine, cond=cond, temporary=temp)
if error:
templine += 1
else:
break
if error:
error = pdb.set_break(file, line, cond=cond, temporary=temp)
if throw:
raise Error(error)
sys.__stdout__.write("\n%s\n" % error)
return
sys.__stdout__.write("\n")
pdb.do_break("") # print breakpoints
pdb.set_continue()
sys.settrace(pdb.trace_dispatch)
