def _pl_find_on_path(self, fullname, path=None):
subname = fullname.split(".")[-1]
if self.path is None and subname != fullname:
return None
path = os.path.realpath(self.path)
for (fp, ispkg) in FLS:
for loader in self._loader_handlers:
composed_path = fp % (('%s' + SEP + '%s') % (path, subname), loader.suffix)
if os.path.isdir(composed_path):
raise IOError("Invalid: Directory name ends in recognized suffix")
if os.path.isfile(composed_path):
return PolyLoader(fullname, composed_path, ispkg)
# Fall back onto Python's own methods.
try:
file, filename, etc = imp.find_module(subname, [path])
except ImportError as e:
return None
return pkgutil.ImpLoader(fullname, file, filename, etc)
python类ImpLoader()的实例源码
def find_module(self, fullname, path=None):
# this duplicates most of ImpImporter.find_module
subname = fullname.split(".")[-1]
if subname != fullname and self.path is None:
return None
if self.path is None:
path = None
else:
path = [os.path.realpath(self.path)]
try:
file, filename, etc = imp.find_module(subname, path)
except ImportError:
return None
if file and etc[2] == imp.PY_SOURCE:
outfilename = maybe_2to3(filename, modname=fullname)
if outfilename != filename:
file.close()
filename = outfilename
file = open(filename, 'rb')
return ImpLoader(fullname, file, filename, etc)
# setup the hook
def _pl_find_on_path(self, fullname, path=None):
subname = fullname.split(".")[-1]
if self.path is None and subname != fullname:
return None
path = os.path.realpath(self.path)
for (fp, ispkg) in FLS:
for loader in self._loader_handlers:
composed_path = fp % (('%s' + SEP + '%s') % (path, subname), loader.suffix)
if os.path.isdir(composed_path):
raise IOError("Invalid: Directory name ends in recognized suffix")
if os.path.isfile(composed_path):
return PolyLoader(fullname, composed_path, ispkg)
# Fall back onto Python's own methods.
try:
file, filename, etc = imp.find_module(subname, [path])
except ImportError as e:
return None
return pkgutil.ImpLoader(fullname, file, filename, etc)
def test_loader_deprecated(self):
with self.check_deprecated():
x = pkgutil.ImpLoader("", "", "", "")
def test_loader_deprecated(self):
with self.check_deprecated():
x = pkgutil.ImpLoader("", "", "", "")
def find_module(self, fullname, paths=None):
""" Returns a FavaLoader for fava files and a pkgutil.ImpLoader
for standard python files. The ImpLoader is a PEP-302 wrapper
for python's regular import machinery.
"""
name = fullname.split(".")[-1]
filename = os.path.join(self.path, name + self.ext)
if os.path.exists(filename):
return FavaLoader(filename)
return pkgutil.ImpLoader(fullname, *imp.find_module(name, [self.path]))
def test_loader_deprecated(self):
with self.check_deprecated():
x = pkgutil.ImpLoader("", "", "", "")
