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gh-98040: Remove just the imp module (#98573)
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Barry Warsaw
GitHub
parent
79b9db9295
commit
e1f14643dc
24 changed files with 40 additions and 1537 deletions
183
Lib/pkgutil.py
183
Lib/pkgutil.py
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@ -14,7 +14,7 @@ import warnings
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__all__ = [
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'get_importer', 'iter_importers', 'get_loader', 'find_loader',
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'walk_packages', 'iter_modules', 'get_data',
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'ImpImporter', 'ImpLoader', 'read_code', 'extend_path',
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'read_code', 'extend_path',
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'ModuleInfo',
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]
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@ -185,187 +185,6 @@ iter_importer_modules.register(
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importlib.machinery.FileFinder, _iter_file_finder_modules)
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def _import_imp():
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global imp
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with warnings.catch_warnings():
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warnings.simplefilter('ignore', DeprecationWarning)
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imp = importlib.import_module('imp')
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class ImpImporter:
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"""PEP 302 Finder that wraps Python's "classic" import algorithm
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ImpImporter(dirname) produces a PEP 302 finder that searches that
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directory. ImpImporter(None) produces a PEP 302 finder that searches
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the current sys.path, plus any modules that are frozen or built-in.
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Note that ImpImporter does not currently support being used by placement
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on sys.meta_path.
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"""
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def __init__(self, path=None):
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global imp
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warnings.warn("This emulation is deprecated and slated for removal "
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"in Python 3.12; use 'importlib' instead",
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DeprecationWarning)
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_import_imp()
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self.path = path
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def find_module(self, fullname, path=None):
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# Note: we ignore 'path' argument since it is only used via meta_path
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subname = fullname.split(".")[-1]
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if subname != fullname and self.path is None:
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return None
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if self.path is None:
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path = None
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else:
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path = [os.path.realpath(self.path)]
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try:
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file, filename, etc = imp.find_module(subname, path)
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except ImportError:
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return None
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return ImpLoader(fullname, file, filename, etc)
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def iter_modules(self, prefix=''):
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if self.path is None or not os.path.isdir(self.path):
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return
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yielded = {}
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import inspect
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try:
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filenames = os.listdir(self.path)
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except OSError:
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# ignore unreadable directories like import does
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filenames = []
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filenames.sort() # handle packages before same-named modules
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for fn in filenames:
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modname = inspect.getmodulename(fn)
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if modname=='__init__' or modname in yielded:
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continue
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path = os.path.join(self.path, fn)
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ispkg = False
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if not modname and os.path.isdir(path) and '.' not in fn:
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modname = fn
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try:
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dircontents = os.listdir(path)
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except OSError:
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# ignore unreadable directories like import does
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dircontents = []
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for fn in dircontents:
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subname = inspect.getmodulename(fn)
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if subname=='__init__':
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ispkg = True
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break
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else:
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continue # not a package
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if modname and '.' not in modname:
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yielded[modname] = 1
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yield prefix + modname, ispkg
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class ImpLoader:
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"""PEP 302 Loader that wraps Python's "classic" import algorithm
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"""
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code = source = None
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def __init__(self, fullname, file, filename, etc):
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warnings.warn("This emulation is deprecated and slated for removal in "
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"Python 3.12; use 'importlib' instead",
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DeprecationWarning)
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_import_imp()
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self.file = file
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self.filename = filename
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self.fullname = fullname
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self.etc = etc
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def load_module(self, fullname):
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self._reopen()
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try:
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mod = imp.load_module(fullname, self.file, self.filename, self.etc)
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finally:
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if self.file:
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self.file.close()
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# Note: we don't set __loader__ because we want the module to look
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# normal; i.e. this is just a wrapper for standard import machinery
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return mod
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def get_data(self, pathname):
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with open(pathname, "rb") as file:
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return file.read()
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def _reopen(self):
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if self.file and self.file.closed:
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mod_type = self.etc[2]
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if mod_type==imp.PY_SOURCE:
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self.file = open(self.filename, 'r')
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elif mod_type in (imp.PY_COMPILED, imp.C_EXTENSION):
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self.file = open(self.filename, 'rb')
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def _fix_name(self, fullname):
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if fullname is None:
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fullname = self.fullname
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elif fullname != self.fullname:
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raise ImportError("Loader for module %s cannot handle "
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"module %s" % (self.fullname, fullname))
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return fullname
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def is_package(self, fullname):
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fullname = self._fix_name(fullname)
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return self.etc[2]==imp.PKG_DIRECTORY
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def get_code(self, fullname=None):
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fullname = self._fix_name(fullname)
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if self.code is None:
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mod_type = self.etc[2]
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if mod_type==imp.PY_SOURCE:
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source = self.get_source(fullname)
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self.code = compile(source, self.filename, 'exec')
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elif mod_type==imp.PY_COMPILED:
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self._reopen()
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try:
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self.code = read_code(self.file)
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finally:
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self.file.close()
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elif mod_type==imp.PKG_DIRECTORY:
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self.code = self._get_delegate().get_code()
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return self.code
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def get_source(self, fullname=None):
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fullname = self._fix_name(fullname)
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if self.source is None:
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mod_type = self.etc[2]
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if mod_type==imp.PY_SOURCE:
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self._reopen()
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try:
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self.source = self.file.read()
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finally:
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self.file.close()
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elif mod_type==imp.PY_COMPILED:
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if os.path.exists(self.filename[:-1]):
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with open(self.filename[:-1], 'r') as f:
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self.source = f.read()
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elif mod_type==imp.PKG_DIRECTORY:
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self.source = self._get_delegate().get_source()
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return self.source
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def _get_delegate(self):
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finder = ImpImporter(self.filename)
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spec = _get_spec(finder, '__init__')
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return spec.loader
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def get_filename(self, fullname=None):
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fullname = self._fix_name(fullname)
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mod_type = self.etc[2]
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if mod_type==imp.PKG_DIRECTORY:
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return self._get_delegate().get_filename()
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elif mod_type in (imp.PY_SOURCE, imp.PY_COMPILED, imp.C_EXTENSION):
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return self.filename
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return None
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try:
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import zipimport
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from zipimport import zipimporter
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