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gh-97850: Remove deprecated functions from importlib.utils (#97898)

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* gh-97850: Remove deprecated functions from `importlib.utils`

* Rebase and remove `set_package` from diff
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Nikita Sobolev 2022-10-07 03:57:10 +03:00 • committed by GitHub
parent 4875433682
commit 27025e158c
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6 changed files with 4 additions and 373 deletions
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87
Lib/importlib/util.py
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@ -11,12 +11,9 @@ from ._bootstrap_external import decode_source
from ._bootstrap_external import source_from_cache
from ._bootstrap_external import spec_from_file_location
from contextlib import contextmanager
import _imp
import functools
import sys
import types
import warnings
def source_hash(source_bytes):
@ -115,90 +112,6 @@ def find_spec(name, package=None):
return spec
@contextmanager
def _module_to_load(name):
is_reload = name in sys.modules
module = sys.modules.get(name)
if not is_reload:
# This must be done before open() is called as the 'io' module
# implicitly imports 'locale' and would otherwise trigger an
# infinite loop.
module = type(sys)(name)
# This must be done before putting the module in sys.modules
# (otherwise an optimization shortcut in import.c becomes wrong)
module.__initializing__ = True
sys.modules[name] = module
try:
yield module
except Exception:
if not is_reload:
try:
del sys.modules[name]
except KeyError:
pass
finally:
module.__initializing__ = False
def set_loader(fxn):
"""Set __loader__ on the returned module.
This function is deprecated.
"""
@functools.wraps(fxn)
def set_loader_wrapper(self, *args, **kwargs):
warnings.warn('The import system now takes care of this automatically; '
'this decorator is slated for removal in Python 3.12',
DeprecationWarning, stacklevel=2)
module = fxn(self, *args, **kwargs)
if getattr(module, '__loader__', None) is None:
module.__loader__ = self
return module
return set_loader_wrapper
def module_for_loader(fxn):
"""Decorator to handle selecting the proper module for loaders.
The decorated function is passed the module to use instead of the module
name. The module passed in to the function is either from sys.modules if
it already exists or is a new module. If the module is new, then __name__
is set the first argument to the method, __loader__ is set to self, and
__package__ is set accordingly (if self.is_package() is defined) will be set
before it is passed to the decorated function (if self.is_package() does
not work for the module it will be set post-load).
If an exception is raised and the decorator created the module it is
subsequently removed from sys.modules.
The decorator assumes that the decorated function takes the module name as
the second argument.
"""
warnings.warn('The import system now takes care of this automatically; '
'this decorator is slated for removal in Python 3.12',
DeprecationWarning, stacklevel=2)
@functools.wraps(fxn)
def module_for_loader_wrapper(self, fullname, *args, **kwargs):
with _module_to_load(fullname) as module:
module.__loader__ = self
try:
is_package = self.is_package(fullname)
except (ImportError, AttributeError):
pass
else:
if is_package:
module.__package__ = fullname
else:
module.__package__ = fullname.rpartition('.')[0]
# If __package__ was not set above, __import__() will do it later.
return fxn(self, module, *args, **kwargs)
return module_for_loader_wrapper
class _LazyModule(types.ModuleType):
"""A subclass of the module type which triggers loading upon attribute access."""