finally:

if is_enabled:

faulthandler.enable(file=fd, all_threads=True)

class SaveSignals:

"""

Save an restore signal handlers.

This class is only able to save/restore signal handlers registered

by the Python signal module: see bpo-13285 for "external" signal

handlers.

"""

def __init__(self):

import signal

self.signal = signal

self.signals = list(range(1, signal.NSIG))

# SIGKILL and SIGSTOP signals cannot be ignored nor catched

for signame in ('SIGKILL', 'SIGSTOP'):

try:

signum = getattr(signal, signame)

except AttributeError:

continue

self.signals.remove(signum)

self.handlers = {}

def save(self):

for signum in self.signals:

handler = self.signal.getsignal(signum)

if handler is None:

# getsignal() returns None if a signal handler was not

# registered by the Python signal module,

# and the handler is not SIG_DFL nor SIG_IGN.

#

# Ignore the signal: we cannot restore the handler.

continue

self.handlers[signum] = handler

def restore(self):

for signum, handler in self.handlers.items():

self.signal.signal(signum, handler)

import tempfile

import unittest

from test.support import requires, import_module, verbose

from test.support import requires, import_module, verbose, SaveSignals

# Optionally test curses module. This currently requires that the

# 'curses' resource be given on the regrtest command line using the -u

del cls.tmp

def setUp(self):

self.save_signals = SaveSignals()

self.save_signals.save()

if verbose:

# just to make the test output a little more readable

print()

def tearDown(self):

curses.resetty()

curses.endwin()

self.save_signals.restore()

def test_window_funcs(self):

"Test the methods of windows"