def _filter_deprecation_warnings():
"""Apply filters to deprecation warnings.
Force the `DeprecationWarning` warnings to be displayed for the qiskit
module, overriding the system configuration as they are ignored by default
[1] for end-users. Additionally, silence the `ChangedInMarshmallow3Warning`
messages.
TODO: on Python 3.7, this might not be needed due to PEP-0565 [2].
[1] https://docs.python.org/3/library/warnings.html#default-warning-filters
[2] https://www.python.org/dev/peps/pep-0565/
"""
deprecation_filter = ('always', None, DeprecationWarning,
re.compile(r'^qiskit\.*', re.UNICODE), 0)
# Instead of using warnings.simple_filter() directly, the internal
# _add_filter() function is used for being able to match against the
# module.
try:
warnings._add_filter(*deprecation_filter, append=False)
except AttributeError:
# ._add_filter is internal and not available in some Python versions.
pass
# Add a filter for ignoring ChangedInMarshmallow3Warning, as we depend on
# marhsmallow 2 explicitly. 2.17.0 introduced new deprecation warnings that
# are useful for eventually migrating, but too verbose for our purposes.
warnings.simplefilter('ignore', category=ChangedInMarshmallow3Warning)
def _filter_deprecation_warnings():
"""Apply filters to deprecation warnings.
Force the `DeprecationWarning` warnings to be displayed for the qiskit
module, overriding the system configuration as they are ignored by default
[1] for end-users. Additionally, silence the `ChangedInMarshmallow3Warning`
messages.
TODO: on Python 3.7, this might not be needed due to PEP-0565 [2].
[1] https://docs.python.org/3/library/warnings.html#default-warning-filters
[2] https://www.python.org/dev/peps/pep-0565/
"""
deprecation_filter = (
"default",
None,
DeprecationWarning,
re.compile(r"^qiskit\.*", re.UNICODE),
0,
)
# Instead of using warnings.simple_filter() directly, the internal
# _add_filter() function is used for being able to match against the
# module.
try:
warnings._add_filter(*deprecation_filter, append=False)
except AttributeError:
# ._add_filter is internal and not available in some Python versions.
pass
def _enable_deprecation_warnings():
"""
Force the `DeprecationWarning` warnings to be displayed for the qiskit
module, overriding the system configuration as they are ignored by default
[1] for end-users.
TODO: on Python 3.7, this might not be needed due to PEP-0565 [2].
[1] https://docs.python.org/3/library/warnings.html#default-warning-filters
[2] https://www.python.org/dev/peps/pep-0565/
"""
# pylint: disable=invalid-name
deprecation_filter = ('always', None, DeprecationWarning,
re.compile(r'^qiskit\.*', re.UNICODE), 0)
# Instead of using warnings.simple_filter() directly, the internal
# _add_filter() function is used for being able to match against the
# module.
warnings._add_filter(*deprecation_filter, append=False)
def _enable_deprecation_warnings():
"""
Force the `DeprecationWarning` warnings to be displayed for the qiskit
module, overriding the system configuration as they are ignored by default
[1] for end-users.
TODO: on Python 3.7, this might not be needed due to PEP-0565 [2].
[1] https://docs.python.org/3/library/warnings.html#default-warning-filters
[2] https://www.python.org/dev/peps/pep-0565/
"""
# pylint: disable=invalid-name
deprecation_filter = ('always', None, DeprecationWarning,
re.compile(r'^qiskit\.*', re.UNICODE), 0)
# Instead of using warnings.simple_filter() directly, the internal
# _add_filter() function is used for being able to match against the
# module.
warnings._add_filter(*deprecation_filter, append=False)
def spec_for_distutils(self):
import importlib
import importlib.abc
import importlib.util
import warnings
# warnings.filterwarnings() imports the re module
warnings._add_filter(
'ignore',
_TrivialRe("distutils", "deprecated"),
DeprecationWarning,
None,
0,
append=True
)
try:
mod = importlib.import_module('setuptools._distutils')
except Exception:
# There are a couple of cases where setuptools._distutils
# may not be present:
# - An older Setuptools without a local distutils is
# taking precedence. Ref #2957.
# - Path manipulation during sitecustomize removes
# setuptools from the path but only after the hook
# has been loaded. Ref #2980.
# In either case, fall back to stdlib behavior.
return
class DistutilsLoader(importlib.abc.Loader):
def create_module(self, spec):
return mod
def exec_module(self, module):
pass
return importlib.util.spec_from_loader(
'distutils', DistutilsLoader(), origin=mod.__file__
)
def update_event(self, inp=-1):
self.set_output_val(0, warnings._add_filter())
