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# flake8: noqa
import contextlib
import builtins
import sys
from test.support import requires_zlib
import test.support
ModuleNotFoundError = getattr(builtins, 'ModuleNotFoundError', ImportError)
try:
from test.support.warnings_helper import check_warnings
except (ModuleNotFoundError, ImportError):
from test.support import check_warnings
try:
from test.support.os_helper import (
change_cwd,
rmtree,
EnvironmentVarGuard,
TESTFN,
unlink,
skip_unless_symlink,
temp_dir,
create_empty_file,
temp_cwd,
)
except (ModuleNotFoundError, ImportError):
from test.support import (
change_cwd,
rmtree,
EnvironmentVarGuard,
TESTFN,
unlink,
skip_unless_symlink,
temp_dir,
create_empty_file,
temp_cwd,
)
# From Python 3.9
@contextlib.contextmanager
def _save_restore_warnings_filters():
old_filters = warnings.filters[:]
try:
yield
finally:
warnings.filters[:] = old_filters
try:
from test.support.warnings_helper import save_restore_warnings_filters
except (ModuleNotFoundError, ImportError):
save_restore_warnings_filters = _save_restore_warnings_filters
if sys.version_info < (3, 9):
requires_zlib = lambda: test.support.requires_zlib
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