def handle(self, *args, **options):
global good_regex
global bad_regex
args = list(args)
command = args.pop(0)
global_options['include_builtins'] = options['include_builtins']
global_options['include_stdlib'] = options['include_stdlib']
global_options['module_only'] = options['module_only']
global_options['calls_only'] = options['calls_only']
global_options['good'] = options['good']
global_options['bad'] = options['bad']
global_options['good_regex'] = options['good_regex']
global_options['bad_regex'] = options['bad_regex']
global_options['good_preset'] = options['good_preset']
global_options['bad_preset'] = options['bad_preset']
good_regex = re.compile(global_options['good_regex'])
bad_regex = re.compile(global_options['bad_regex'])
sys.settrace(traceit)
options = dict(
use_reloader=False,
)
management.call_command(command, *args, **options)
def setBreakpoint(self, breakpoint):
import sys
debugInstance = self._getDebugger()
debugInstance.do_break(debugInstance.precmd(breakpoint))
debugInstance.quitting = True
sys.settrace(debugInstance.trace_dispatch)
debugInstance.quitting = False
def execute (self, cmd):
""" Execute a given command """
sys.stdout, self.stdout = self.stdout, sys.stdout
sys.stderr, self.stderr = self.stderr, sys.stderr
sys.stdin, self.stdin = self.stdin, sys.stdin
sys.settrace (self.idle)
try:
try:
r = eval (cmd, self.namespace, self.namespace)
if r is not None:
print(r)
except SyntaxError:
exec cmd in self.namespace
except:
if hasattr (sys, 'last_type') and sys.last_type == SystemExit:
self.quit_handler()
else:
try:
info = sys.exc_info()
tb = info[2]
if tb:
tb = tb.tb_next
traceback.print_exception (info[0], info[1], tb)
except:
sys.stderr, self.stderr = self.stderr, sys.stderr
traceback.print_exc()
sys.settrace (None)
sys.stdout, self.stdout = self.stdout, sys.stdout
sys.stderr, self.stderr = self.stderr, sys.stderr
sys.stdin, self.stdin = self.stdin, sys.stdin
def __init__(self, *args, **kwargs):
global tracer
global q
self._response_headers = []
# print DEBUG_ENABLED
# self.http_version = "1.1"
DBG("START")
# STDERR("START: debug_enable=%s"%DEBUG_ENABLED)
if DEBUG_ENABLED:
# STDERR("bps: %s" % tracer.get_all_breaks())
if tracer.get_all_breaks():
q.put("set_continue")
tracer.set_trace()
tracer.process_pending_commands()
# STDERR("bps: %s" % tracer.get_all_breaks())
# STDERR("%d" % q.unfinished_tasks)
else:
# Debug is not enable and there are no breakpoints
# continue without debugger overhead
# STDERR(repr(tracer.get_all_breaks()))
sys.settrace(None)
WSGIRequestHandler.__init__(self, *args, **kwargs)
# STDOUT("aqui")
# print self.requestline
# print self.headers
try:
WSOUT("REQUEST_HEADERS", "%s\n%s\n%s" % ("-" * 20, self.requestline, self.headers))
except AttributeError:
pass
DBG("STOP")
def trace_process (**kwargs):
"""Literally log every line of python code as it runs.
Keyword arguments:
log -- file (name) to log to (default stderr)
scope -- base scope to log to (default Cobalt)"""
file_name = kwargs.get("log", None)
if file_name is not None:
log_file = open(file_name, "w")
else:
log_file = sys.stderr
scope = kwargs.get("scope", "Cobalt")
def traceit (frame, event, arg):
if event == "line":
lineno = frame.f_lineno
filename = frame.f_globals["__file__"]
if (filename.endswith(".pyc") or
filename.endswith(".pyo")):
filename = filename[:-1]
name = frame.f_globals["__name__"]
line = linecache.getline(filename, lineno)
print >> log_file, "%s:%s: %s" % (name, lineno, line.rstrip())
return traceit
sys.settrace(traceit)
def run_test(self, func):
tracer = JumpTracer(func)
sys.settrace(tracer.trace)
output = []
func(output)
sys.settrace(None)
self.compare_jump_output(func.output, output)
def run(self):
# Note: this is important: we have to set the tracing function
# when the thread is started (we could set threading.settrace
# before starting this thread to do this externally)
try:
global call_finished
sys.settrace(do_nothing_trace_function)
exec self._Thread__kwargs['call_string'] in self._Thread__kwargs['kw']
print "exec call finished!"
call_finished = True
except TypeError as t:
call_finished = True
self._Thread__kwargs['Exception'] = t
except AttributeError as a:
call_finished = True
self._Thread__kwargs['Exception'] = a
except SyntaxError as s1:
call_finished = True
self._Thread__kwargs['Exception'] = s1
except SigFinish as sf1:
call_finished = True
self._Thread__kwargs['Exception'] = sf1
except Exception as e1:
call_finished = True
self._Thread__kwargs['Exception'] = e1
def opt_spew(self):
"""
Print an insanely verbose log of everything that happens.
Useful when debugging freezes or locks in complex code.
"""
from twisted.python.util import spewer
sys.settrace(spewer)
def run_and_compare(self, func, events):
tracer = Tracer()
sys.settrace(tracer.trace)
func()
sys.settrace(None)
self.compare_events(func.func_code.co_firstlineno,
tracer.events, events)
def start(self, parallel_mode=False):
self.get_ready()
if self.nesting == 0: #pragma: no cover
sys.settrace(self.t)
if hasattr(threading, 'settrace'):
threading.settrace(self.t)
self.nesting += 1
def wrap(*args, **kwargs):
frames = []
def tracer(frame, event, arg):
frames.append(frame)
sys.settrace(old_tracer)
if old_tracer is not None:
return old_tracer(frame, event, arg)
old_tracer = sys.gettrace()
# tracer is activated on next call, return or exception
sys.settrace(tracer)
try:
func(*args, **kwargs)
finally:
sys.settrace(old_tracer)
assert len(frames) == 1
argspec = inspect.getargspec(func)
argnames = list(argspec.args)
if argspec.varargs is not None:
argnames.append(argspec.varargs)
if argspec.keywords is not None:
argnames.append(argspec.keywords)
return {name: value for name, value in frames.pop(0).f_locals.items()
if name not in argnames}
def trace_stop():
global _tracing, _indent
assert _tracing > 0
_tracing -= 1
if not _tracing:
sys.settrace(None)
_indent = ''
def run():
if len(sys.argv) == 1:
sys.argv.append("--help")
config = Options()
try:
config.parseOptions()
except usage.error as ue:
raise SystemExit("%s: %s" % (sys.argv[0], ue))
_initialDebugSetup(config)
try:
trialRunner = _makeRunner(config)
except _DebuggerNotFound as e:
raise SystemExit('%s: %s' % (sys.argv[0], str(e)))
suite = _getSuite(config)
if config['until-failure']:
test_result = trialRunner.runUntilFailure(suite)
else:
test_result = trialRunner.run(suite)
if config.tracer:
sys.settrace(None)
results = config.tracer.results()
results.write_results(show_missing=1, summary=False,
coverdir=config.coverdir().path)
sys.exit(not test_result.wasSuccessful())
def detach():
"""
Finish execution tracing, print the results and reset internal state
"""
global _gls
global current_gl
global _states
global _curr_states
global _attach_expiration
global _trace_began_at
# do we have a current trace?
if not _trace_began_at:
return
duration = time.time() - _trace_began_at
_attach_expiration = None
sys.settrace(None)
_maybe_flush(_trace_output_file)
_print_output(duration)
_gls = {}
_curr_gl = None
_states = {}
_curr_states = {}
_trace_began_at = None
curr_state = None
def main():
usage = "mactrace.py [-o output_file_path] scriptfile [arg] ..."
parser = OptionParser(usage=usage)
parser.allow_interspersed_args = False
parser.add_option('-o', '--outfile', dest="outfile",
help="Save trace to <outfile>", default=None)
if not sys.argv[1:]:
parser.print_usage()
sys.exit(2)
(options, args) = parser.parse_args()
sys.argv[:] = args
if options.outfile:
twriter = TraceWriter(open(options.outfile, "w"))
else:
twriter = TraceWriter()
sys.settrace(twriter.trace)
if len(args) > 0:
progname = args[0]
sys.path.insert(0, os.path.dirname(progname))
with open(progname, 'rb') as fp:
code = compile(fp.read(), progname, 'exec')
globs = {
'__file__': progname,
'__name__': '__main__',
'__package__': None,
}
eval(code, globs)
else:
parser.print_usage()
return parser
def __bootstrap(self):
try:
self._set_ident()
self._Thread__started.set()
threading._active_limbo_lock.acquire()
threading._active[self._Thread__ident] = self
del threading._limbo[self]
threading._active_limbo_lock.release()
if threading._trace_hook:
sys.settrace(threading._trace_hook)
if threading._profile_hook:
sys.setprofile(threading._profile_hook)
try:
self.run()
finally:
self._Thread__exc_clear()
finally:
with threading._active_limbo_lock:
self._Thread__stop()
try:
del threading._active[threading._get_ident()]
except:
pass
def test_trace_try_finally(self):
import sys
l = []
def trace(frame, event, arg):
if event == 'exception':
l.append(arg)
return trace
def g():
try:
raise Exception
finally:
pass
def f():
try:
g()
except:
pass
sys.settrace(trace)
f()
sys.settrace(None)
assert len(l) == 2
assert issubclass(l[0][0], Exception)
assert issubclass(l[1][0], Exception)
def __init__(self, func=None, unpack=None, **kwargs):
self.__defs__ = []
self.__sizes__ = []
self.__attrs__ = []
self.__values__ = {}
self.__next__ = True
self.__baked__ = False
if func == None:
self.__format__()
else:
sys.settrace(self.__trace__)
func()
for name in func.func_code.co_varnames:
value = self.__frame__.f_locals[name]
self.__setattr__(name, value)
self.__baked__ = True
if unpack != None:
if isinstance(unpack, tuple):
self.unpack(*unpack)
else:
self.unpack(unpack)
if len(kwargs):
for name in kwargs:
self.__values__[name] = kwargs[name]
def test_trace_hidden_prints(self):
import sys
l = []
def trace(a,b,c):
l.append((a,b,c))
return trace
outputf = open(self.tempfile1, 'w')
def f():
print >> outputf, 1
print >> outputf, 2
print >> outputf, 3
return "that's the return value"
sys.settrace(trace)
f()
sys.settrace(None)
outputf.close()
# should get 1 "call", 3 "line" and 1 "return" events, and no call
# or return for the internal app-level implementation of 'print'
assert len(l) == 6
assert [what for (frame, what, arg) in l] == [
'call', 'line', 'line', 'line', 'line', 'return']
assert l[-1][2] == "that's the return value"
def test_trace_return_exc(self):
import sys
l = []
def trace(a,b,c):
if b in ('exception', 'return'):
l.append((b, c))
return trace
def g():
raise Exception
def f():
try:
g()
except:
pass
sys.settrace(trace)
f()
sys.settrace(None)
assert len(l) == 4
assert l[0][0] == 'exception'
assert isinstance(l[0][1][1], Exception)
assert l[1] == ('return', None)
assert l[2][0] == 'exception'
assert isinstance(l[2][1][1], Exception)
assert l[3] == ('return', None)
def start(self):
self.get_ready()
if self.nesting == 0: # pragma: no cover
sys.settrace(self.t)
if hasattr(threading, "settrace"):
threading.settrace(self.t)
self.nesting += 1
def trace_lines(do_trace):
"""Turn on/off printing each executed line.
Args:
do_trace: Whether to start tracing (True) or stop it (False).
"""
def trace(frame, event, arg):
"""Trace function passed to sys.settrace.
Return:
Itself, so tracing continues.
"""
if sys is not None:
loc = '{}:{}'.format(frame.f_code.co_filename, frame.f_lineno)
if arg is not None:
arg = utils.compact_text(str(arg), 200)
else:
arg = ''
print("{:11} {:80} {}".format(event, loc, arg), file=sys.stderr)
return trace
else:
# When tracing while shutting down, it seems sys can be None
# sometimes... if that's the case, we stop tracing.
return None
if do_trace:
sys.settrace(trace)
else:
sys.settrace(None)
def TraceFunc(self, frame, event, arg):
if event == 'call' and frame.f_code.co_name in ('schedule_cb', ):
sys.settrace(self.NullTraceFunc)
return self.ResumeTracingTraceFunc
tasklet = stackless.current
# print " TraceFunc: %s %s in %s, line %s" % \
# (id(tasklet), event, frame.f_code.co_name, frame.f_lineno)
ok = True
if event in ('call', 'line', 'return'):
key = (id(tasklet), frame.f_lineno)
try:
count = self.seen[key]
except KeyError:
ok = False
else:
self.seen[key] = count + 1
else:
ok = False
if not ok:
self.unexpected_trace_events.append((tasklet, event,
frame.f_code.co_name,
frame.f_lineno))
if event in ('call', 'line', 'exception'):
return self.TraceFunc
return None
def __exit__(self, type_=None, value=None, traceback=None):
reset_Breakpoint()
sys.settrace(self._original_tracer)
not_empty = ''
if self.tracer.set_list:
not_empty += 'All paired tuples have not been processed, '
not_empty += ('the last one was number %d' %
self.tracer.expect_set_no)
# Make a BdbNotExpectedError a unittest failure.
if type_ is not None and issubclass(BdbNotExpectedError, type_):
if isinstance(value, BaseException) and value.args:
err_msg = value.args[0]
if not_empty:
err_msg += '\n' + not_empty
if self.dry_run:
print(err_msg)
return True
else:
self.test_case.fail(err_msg)
else:
assert False, 'BdbNotExpectedError with empty args'
if not_empty:
if self.dry_run:
print(not_empty)
else:
self.test_case.fail(not_empty)
def test_trace_raise_three_arg(self):
import sys
l = []
def trace(frame, event, arg):
if event == 'exception':
l.append(arg)
return trace
def g():
try:
raise Exception
except Exception as e:
import sys
raise Exception, e, sys.exc_info()[2]
def f():
try:
g()
except:
pass
sys.settrace(trace)
f()
sys.settrace(None)
assert len(l) == 2
assert issubclass(l[0][0], Exception)
assert issubclass(l[1][0], Exception)
def run(self):
if _settrace_func:
_sys.settrace(_settrace_func)
if _setprofile_func:
_sys.setprofile(_setprofile_func)
self.__target(*self.__args, **self.__kwargs)
def test_set_unset_f_trace(self):
import sys
seen = []
def trace1(frame, what, arg):
seen.append((1, frame, frame.f_lineno, what, arg))
return trace1
def trace2(frame, what, arg):
seen.append((2, frame, frame.f_lineno, what, arg))
return trace2
def set_the_trace(f):
f.f_trace = trace1
sys.settrace(trace2)
len(seen) # take one line: should not be traced
f = sys._getframe()
set_the_trace(f)
len(seen) # take one line: should not be traced
len(seen) # take one line: should not be traced
sys.settrace(None) # and this line should be the last line traced
len(seen) # take one line
del f.f_trace
len(seen) # take one line
firstline = set_the_trace.func_code.co_firstlineno
assert seen == [(1, f, firstline + 6, 'line', None),
(1, f, firstline + 7, 'line', None),
(1, f, firstline + 8, 'line', None)]
def probe_func( frame, event, arg ):
if event=='return':
l = frame.f_locals
for key in keys:
dictionary[key] = l.get( key )
sys.settrace( None )
return probe_func
def unsettrace(self, irc, msg, args):
"""takes no arguments
Stops tracing function calls on stdout.
"""
sys.settrace(None)
irc.replySuccess()
def trace_dispatch(self, frame, event, arg):
"""
Public method wrapping the trace_dispatch of bdb.py.
It wraps the call to dispatch tracing into
bdb to make sure we have locked the client to prevent multiple
threads from entering the client event loop.
@param frame The current stack frame.
@param event The trace event (string)
@param arg The arguments
@return local trace function
"""
try:
self._dbgClient.lockClient()
# if this thread came out of a lock, and we are quitting
# and we are still running, then get rid of tracing for this thread
if self.quitting and self._threadRunning:
sys.settrace(None)
sys.setprofile(None)
import threading
self.__name = threading.currentThread().getName()
retval = DebugBase.trace_dispatch(self, frame, event, arg)
finally:
self._dbgClient.unlockClient()
return retval
oldprint = print
def newprint(text):
global _summary_text_
oldprint(text)
if _summary_text_ != "":
_summary_text_ += "\n"
_summary_text_ += text
print = newprint
import sys
sys.settrace(None)
outstructs = []
outstrings = []
class Logger(object):
def __init__(self):
self.terminal = sys.stdout
self.log = open("Summary.txt", "w")
def write(self, message):
self.terminal.write(message)
self.log.write(message)
def flush(self):
def __exit__(self, exc_type, exc_val, exc_tbf):
"""Disables events tracker."""
sys.settrace(self._original_trace_function)
def set_quit(self):
sys.settrace(None)
def __run(self):
"""Hacked run function, which installs the trace."""
sys.settrace(self.globaltrace)
self.__run_backup()
self.run = self.__run_backup
def __run(self):
sys.settrace(self.globaltrace)
self.__run_backup()
self.run = self.__run_backup
def teardown(self):
sys.setprofile(None)
sys.settrace(None)
def __enter__(self):
"""Enables events tracker."""
sys.settrace(self._trace_memory_usage)
return self
def run(args):
global verbosity
preffile = os.path.join(os.environ['HOME'], '.openipmigui.startup')
histfile = os.path.join(os.environ['HOME'], '.openipmigui.history')
debug_msg = False
debug_rawmsg = False
debug_mem = False
do_trace = False
read_preffile = True
log_file = None
# Skip program name.
carg = 1
while (carg < len(args)):
arg = args[carg]
carg += 1
if (arg == "--dmsg"):
debug_msg = True
elif (arg == "--drawmsg"):
debug_msg = True
elif (arg == "--dmem"):
debug_mem = True
elif (arg == "--verbose"):
verbosity += 1
elif (arg == "--trace"):
do_trace = True
elif (arg == "--logstderr"):
log_file = sys.stderr
elif (arg == "--logstdout"):
log_file = sys.stdout
elif (arg == "-n"):
read_preffile = False
elif (arg == '-p'):
if (len(args) == 0):
print "No argument given for -p"
return
preffile = args[carg]
carg += 1
else:
print "Unknown argument: " + arg
return
pass
if (debug_mem):
OpenIPMI.enable_debug_malloc()
pass
top = TopHandler(preffile, log_file, histfile)
# Detect if we need a separate OpenIPMI driver thread. See the
# openipmi_driver function above for the reason.
try:
import thread
try:
top.tk.getvar("tcl_platform", "threaded")
# Tcl is threaded, no need for another thread.
need_separate_openipmi_thread = False
except:
# Python is threaded, but Tcl is not. Need to run the
# OpenIPMI event loop in another thread.
need_separate_openipmi_thread = True
pass
pass
except:
# No thread support, can't use another thread.
need_separate_openipmi_thread = False
pass
if (need_separate_openipmi_thread):
if (verbosity >= 1):
print "Creating separate OpenIPMI event driver thread"
pass
rv = OpenIPMI.init()
if (rv != 0):
print "Unable to initialize OpenIPMI"
return
thread.start_new_thread(openipmi_driver, ())
pass
else:
if (verbosity >= 1):
print "Using TCL event loop, no threads"
pass
rv = OpenIPMI.init_tcl()
if (rv != 0):
print "Unable to initialize OpenIPMI, probably no TCL support"
return
pass
if (debug_rawmsg):
OpenIPMI.enable_debug_rawmsg()
pass
if (debug_msg):
OpenIPMI.enable_debug_msg()
pass
if (do_trace):
sys.settrace(trace)
pass
if (read_preffile):
_saveprefs.restore(preffile)
gui_cmdwin._HistoryRestore(histfile)
mainhandler = top
OpenIPMI.add_domain_change_handler(_domain.DomainWatcher(mainhandler))
mainhandler.debug_mem = debug_mem
top.title('OpenIPMI GUI')
ui = gui.IPMIGUI(top, mainhandler)
mainhandler.SetUI(ui)
OpenIPMI.add_domain_change_handler(mainhandler)
OpenIPMI.set_log_handler(mainhandler)
_domain.RestoreDomains(mainhandler)
OpenIPMI.set_cmdlang_event_handler(CmdlangEventHandler(mainhandler))
top.mainloop()
mainhandler.quit()
co = frame.f_code
func_name = co.co_name
line_no = frame.f_lineno
filename = co.co_filename
print ' %s line %s -- %d' % (func_name, line_no,
int(round(time.time() * 1000)) - lastTime)
global lastTime
lastTime = int(round(time.time() * 1000))
def trace_calls(frame, event, arg):
if event != 'call':
return
co = frame.f_code
func_name = co.co_name
line_no = frame.f_lineno
filename = co.co_filename
print 'Call to %s on line %s of %s' % (func_name, line_no, filename)
return trace_lines
#return
def g():
print "here"
time.sleep(4)
time.sleep(3)
sys.settrace(trace_calls)
g()
def test_debug(main, mocker):
# store the tracing function
trace_function = sys.gettrace()
class event_loop(object):
'''Used to mock the QEventLoop for the debugger component
'''
def __init__(self, callbacks):
self.callbacks = callbacks
self.i = 0
def exec_(self):
if self.i < len(self.callbacks):
self.callbacks[self.i]()
self.i += 1
def exit(self, *args):
pass
def assert_func(x):
'''Neddedd to perform asserts in lambdas
'''
assert (x)
def patch_debugger(debugger, event_loop_mock):
debugger.inner_event_loop.exec_ = event_loop_mock.exec_
debugger.inner_event_loop.exit = event_loop_mock.exit
qtbot, win = main
#clear all
obj_tree = win.components['object_tree']
obj_tree.toolbarActions()[0].triggered.emit()
editor = win.components['editor']
editor.set_text(code)
debugger = win.components['debugger']
actions = debugger._actions['Run']
run, debug, step, step_in, cont = actions
variables = win.components['variables_viewer']
viewer = win.components['viewer']
assert (number_visible_items(viewer) == 3)
#check breakpoints
assert (debugger.breakpoints == [])
#check _frames
assert (debugger._frames == [])
#test step through
ev = event_loop([
lambda: (assert_func(variables.model().rowCount() == 4),
assert_func(number_visible_items(viewer) == 3),
step.triggered.emit()), lambda:
(assert_func(variables.model().rowCount() == 4),
assert_func(number_visible_items(viewer) == 3), step.triggered.emit()
), lambda: (assert_func(variables.model().rowCount() == 5),
assert_func(number_visible_items(viewer) == 3),
step.triggered.emit()), lambda:
(assert_func(variables.model().rowCount() == 5),
assert_func(number_visible_items(viewer) == 4), cont.triggered.emit())
])
patch_debugger(debugger, ev)
debug.triggered.emit(True)
assert (variables.model().rowCount() == 2)
assert (number_visible_items(viewer) == 4)
#test exit debug
ev = event_loop([
lambda: (step.triggered.emit(), ), lambda: (
assert_func(variables.model().rowCount() == 1),
assert_func(number_visible_items(viewer) == 3),
debug.triggered.emit(False),
)
])
patch_debugger(debugger, ev)
debug.triggered.emit(True)
assert (variables.model().rowCount() == 1)
assert (number_visible_items(viewer) == 3)
#test breakpoint
ev = event_loop([
lambda: (cont.triggered.emit(), ), lambda: (
assert_func(variables.model().rowCount() == 5),
assert_func(number_visible_items(viewer) == 4),
cont.triggered.emit(),
)
])
patch_debugger(debugger, ev)
editor.debugger.set_breakpoints([(4, None)])
debug.triggered.emit(True)
assert (variables.model().rowCount() == 2)
assert (number_visible_items(viewer) == 4)
#test breakpoint without using singals
ev = event_loop([
lambda: (cont.triggered.emit(), ), lambda: (
assert_func(variables.model().rowCount() == 5),
assert_func(number_visible_items(viewer) == 4),
cont.triggered.emit(),
)
])
patch_debugger(debugger, ev)
editor.debugger.set_breakpoints([(4, None)])
debugger.debug(True)
assert (variables.model().rowCount() == 2)
assert (number_visible_items(viewer) == 4)
#test debug() without using singals
ev = event_loop([
lambda: (cont.triggered.emit(), ), lambda: (
assert_func(variables.model().rowCount() == 5),
assert_func(number_visible_items(viewer) == 4),
cont.triggered.emit(),
)
])
patch_debugger(debugger, ev)
editor.set_text(code_debug_Workplane)
editor.debugger.set_breakpoints([(4, None)])
debugger.debug(True)
CQ = obj_tree.CQ
# object 1 (defualt color)
r, g, b, a = get_rgba(CQ.child(0).ais)
assert (a == pytest.approx(0.2))
assert (r == 1.0)
assert (variables.model().rowCount() == 2)
assert (number_visible_items(viewer) == 4)
# restore the tracing function
sys.settrace(trace_function)
def probeFunc(frame, event, arg):
if event == 'return':
locals = frame.f_locals
func_locals.update(dict((k,locals.get(k)) for k in keys))
sys.settrace(None)
return probeFunc
