Here are the examples of the python api sys.path_importer_cache taken from open source projects. By voting up you can indicate which examples are most useful and appropriate.
23 Examples
5
Example 1
def test_path_hooks(self):
# Test that sys.path_hooks is used.
# Test that sys.path_importer_cache is set.
module = '<test module>'
path = '<test path>'
importer = util.mock_modules(module)
hook = import_util.mock_path_hook(path, importer=importer)
with util.import_state(path_hooks=[hook]):
loader = machinery.PathFinder.find_module(module, [path])
self.assertTrue(loader is importer)
self.assertTrue(path in sys.path_importer_cache)
self.assertTrue(sys.path_importer_cache[path] is importer)
5
Example 2
def test_path_hooks(self):
# Test that sys.path_hooks is used.
# Test that sys.path_importer_cache is set.
module = '<test module>'
path = '<test path>'
importer = util.mock_modules(module)
hook = import_util.mock_path_hook(path, importer=importer)
with util.import_state(path_hooks=[hook]):
loader = machinery.PathFinder.find_module(module, [path])
self.assertIs(loader, importer)
self.assertIn(path, sys.path_importer_cache)
self.assertIs(sys.path_importer_cache[path], importer)
5
Example 3
def test_path_hooks(self):
# Test that sys.path_hooks is used.
# Test that sys.path_importer_cache is set.
module = '<test module>'
path = '<test path>'
importer = util.mock_spec(module)
hook = import_util.mock_path_hook(path, importer=importer)
with util.import_state(path_hooks=[hook]):
loader = self.machinery.PathFinder.find_module(module, [path])
self.assertIs(loader, importer)
self.assertIn(path, sys.path_importer_cache)
self.assertIs(sys.path_importer_cache[path], importer)
5
Example 4
def test_path_hooks(self):
# Test that sys.path_hooks is used.
# Test that sys.path_importer_cache is set.
module = '<test module>'
path = '<test path>'
importer = util.mock_spec(module)
hook = util.mock_path_hook(path, importer=importer)
with util.import_state(path_hooks=[hook]):
loader = self.machinery.PathFinder.find_module(module, [path])
self.assertIs(loader, importer)
self.assertIn(path, sys.path_importer_cache)
self.assertIs(sys.path_importer_cache[path], importer)
3
Example 5
Project: astroid Source File: spec.py
def _precache_zipimporters(path=None):
pic = sys.path_importer_cache
path = path or sys.path
for entry_path in path:
if entry_path not in pic:
try:
pic[entry_path] = zipimport.zipimporter(entry_path)
except zipimport.ZipImportError:
continue
return pic
3
Example 6
def test_empty_path_hooks(self):
# Test that if sys.path_hooks is empty a warning is raised,
# sys.path_importer_cache gets None set, and PathFinder returns None.
path_entry = 'bogus_path'
with util.import_state(path_importer_cache={}, path_hooks=[],
path=[path_entry]):
with warnings.catch_warnings(record=True) as w:
warnings.simplefilter('always')
self.assertIsNone(machinery.PathFinder.find_module('os'))
self.assertIsNone(sys.path_importer_cache[path_entry])
self.assertEqual(len(w), 1)
self.assertTrue(issubclass(w[-1].category, ImportWarning))
3
Example 7
def test_path_importer_cache_empty_string(self):
# The empty string should create a finder using the cwd.
path = ''
module = '<test module>'
importer = util.mock_modules(module)
hook = import_util.mock_path_hook(os.curdir, importer=importer)
with util.import_state(path=[path], path_hooks=[hook]):
loader = machinery.PathFinder.find_module(module)
self.assertIs(loader, importer)
self.assertIn(os.curdir, sys.path_importer_cache)
3
Example 8
Project: brython Source File: test_api.py
def test_method_lacking(self):
# There should be no issues if the method is not defined.
key = 'gobbledeegook'
sys.path_importer_cache[key] = imp.NullImporter('abc')
self.addCleanup(lambda: sys.path_importer_cache.__delitem__(key))
importlib.invalidate_caches() # Shouldn't trigger an exception.
3
Example 9
def test_empty_path_hooks(self):
# Test that if sys.path_hooks is empty a warning is raised,
# sys.path_importer_cache gets None set, and PathFinder returns None.
path_entry = 'bogus_path'
with util.import_state(path_importer_cache={}, path_hooks=[],
path=[path_entry]):
with warnings.catch_warnings(record=True) as w:
warnings.simplefilter('always')
self.assertIsNone(self.machinery.PathFinder.find_module('os'))
self.assertIsNone(sys.path_importer_cache[path_entry])
self.assertEqual(len(w), 1)
self.assertTrue(issubclass(w[-1].category, ImportWarning))
3
Example 10
def test_path_importer_cache_empty_string(self):
# The empty string should create a finder using the cwd.
path = ''
module = '<test module>'
importer = util.mock_spec(module)
hook = import_util.mock_path_hook(os.getcwd(), importer=importer)
with util.import_state(path=[path], path_hooks=[hook]):
loader = self.machinery.PathFinder.find_module(module)
self.assertIs(loader, importer)
self.assertIn(os.getcwd(), sys.path_importer_cache)
3
Example 11
def test_path_importer_cache_empty_string(self):
# The empty string should create a finder using the cwd.
path = ''
module = '<test module>'
importer = util.mock_spec(module)
hook = util.mock_path_hook(os.getcwd(), importer=importer)
with util.import_state(path=[path], path_hooks=[hook]):
loader = self.machinery.PathFinder.find_module(module)
self.assertIs(loader, importer)
self.assertIn(os.getcwd(), sys.path_importer_cache)
3
Example 12
def test_method_lacking(self):
# There should be no issues if the method is not defined.
key = 'gobbledeegook'
sys.path_importer_cache[key] = None
self.addCleanup(lambda: sys.path_importer_cache.__delitem__(key))
self.init.invalidate_caches() # Shouldn't trigger an exception.
3
Example 13
Project: pando.py Source File: harness.py
def teardown():
"""Standard teardown function.
- reset the current working directory
- remove FSFIX = %{tempdir}/fsfix
- reset Pando's global state
- clear out sys.path_importer_cache
"""
os.chdir(CWD)
# Reset some process-global caches. Hrm ...
resources.__cache__ = {}
sys.path_importer_cache = {} # see test_weird.py
2
Example 14
def get_importer(path_item):
"""Retrieve a PEP 302 importer for the given path item
The returned importer is cached in sys.path_importer_cache
if it was newly created by a path hook.
If there is no importer, a wrapper around the basic import
machinery is returned. This wrapper is never inserted into
the importer cache (None is inserted instead).
The cache (or part of it) can be cleared manually if a
rescan of sys.path_hooks is necessary.
"""
try:
importer = sys.path_importer_cache[path_item]
except KeyError:
for path_hook in sys.path_hooks:
try:
importer = path_hook(path_item)
break
except ImportError:
pass
else:
importer = None
sys.path_importer_cache.setdefault(path_item, importer)
if importer is None:
try:
importer = ImpImporter(path_item)
except ImportError:
importer = None
return importer
2
Example 15
Project: TrustRouter Source File: test_path.py
def test_implicit_hooks(self):
# Test that the implicit path hooks are used.
bad_path = '<path>'
module = '<module>'
assert not os.path.exists(bad_path)
existing_path = tempfile.mkdtemp()
try:
with util.import_state():
nothing = _bootstrap._DefaultPathFinder.find_module(module,
path=[existing_path])
self.assertTrue(nothing is None)
self.assertTrue(existing_path in sys.path_importer_cache)
result = isinstance(sys.path_importer_cache[existing_path],
imp.NullImporter)
self.assertFalse(result)
nothing = _bootstrap._DefaultPathFinder.find_module(module,
path=[bad_path])
self.assertTrue(nothing is None)
self.assertTrue(bad_path in sys.path_importer_cache)
self.assertTrue(isinstance(sys.path_importer_cache[bad_path],
imp.NullImporter))
finally:
os.rmdir(existing_path)
2
Example 16
def get_importer(path_item):
"""Retrieve a PEP 302 importer for the given path item
The returned importer is cached in sys.path_importer_cache
if it was newly created by a path hook.
If there is no importer, a wrapper around the basic import
machinery is returned. This wrapper is never inserted into
the importer cache (None is inserted instead).
The cache (or part of it) can be cleared manually if a
rescan of sys.path_hooks is necessary.
"""
try:
importer = sys.path_importer_cache[path_item]
except KeyError:
for path_hook in sys.path_hooks:
try:
importer = path_hook(path_item)
break
except ImportError:
pass
else:
importer = None
sys.path_importer_cache.setdefault(path_item, importer)
if importer is None:
try:
importer = ImpImporter(path_item)
except ImportError:
importer = None
return importer
2
Example 17
def get_importer(path_item):
"""Retrieve a PEP 302 importer for the given path item
The returned importer is cached in sys.path_importer_cache
if it was newly created by a path hook.
The cache (or part of it) can be cleared manually if a
rescan of sys.path_hooks is necessary.
"""
try:
importer = sys.path_importer_cache[path_item]
except KeyError:
for path_hook in sys.path_hooks:
try:
importer = path_hook(path_item)
sys.path_importer_cache.setdefault(path_item, importer)
break
except ImportError:
pass
else:
importer = None
return importer
0
Example 18
def _get_importer(path_name):
"""Python version of PyImport_GetImporter C API function"""
cache = sys.path_importer_cache
try:
importer = cache[path_name]
except KeyError:
# Not yet cached. Flag as using the
# standard machinery until we finish
# checking the hooks
cache[path_name] = None
for hook in sys.path_hooks:
try:
importer = hook(path_name)
break
except ImportError:
pass
else:
# The following check looks a bit odd. The trick is that
# NullImporter raises ImportError if the supplied path is a
# *valid* directory entry (and hence able to be handled
# by the standard import machinery)
try:
importer = imp.NullImporter(path_name)
except ImportError:
return None
cache[path_name] = importer
return importer
0
Example 19
def tearDown(self):
for k in list(sys.path_importer_cache):
if 'MyPyPa' in k:
del sys.path_importer_cache[k]
0
Example 20
def _get_importer(path_name):
"""Python version of PyImport_GetImporter C API function"""
cache = sys.path_importer_cache
try:
importer = cache[path_name]
except KeyError:
# Not yet cached. Flag as using the
# standard machinery until we finish
# checking the hooks
cache[path_name] = None
for hook in sys.path_hooks:
try:
importer = hook(path_name)
break
except ImportError:
pass
else:
# The following check looks a bit odd. The trick is that
# NullImporter throws ImportError if the supplied path is a
# *valid* directory entry (and hence able to be handled
# by the standard import machinery)
try:
importer = imp.NullImporter(path_name)
except ImportError:
return None
cache[path_name] = importer
return importer
0
Example 21
Project: Python-mode-klen Source File: modutils.py
def _module_file(modpath, path=None):
"""get a module type / file path
:type modpath: list or tuple
:param modpath:
splitted module's name (i.e name of a module or package splitted
on '.'), with leading empty strings for explicit relative import
:type path: list or None
:param path:
optional list of path where the module or package should be
searched (use sys.path if nothing or None is given)
:rtype: tuple(int, str)
:return: the module type flag and the file path for a module
"""
# egg support compat
try:
pic = sys.path_importer_cache
_path = (path is None and sys.path or path)
for __path in _path:
if not __path in pic:
try:
pic[__path] = zipimport.zipimporter(__path)
except zipimport.ZipImportError:
pic[__path] = None
checkeggs = True
except AttributeError:
checkeggs = False
# pkg_resources support (aka setuptools namespace packages)
if pkg_resources is not None and modpath[0] in pkg_resources._namespace_packages and len(modpath) > 1:
# setuptools has added into sys.modules a module object with proper
# __path__, get back information from there
module = sys.modules[modpath.pop(0)]
path = module.__path__
imported = []
while modpath:
modname = modpath[0]
# take care to changes in find_module implementation wrt builtin modules
#
# Python 2.6.6 (r266:84292, Sep 11 2012, 08:34:23)
# >>> imp.find_module('posix')
# (None, 'posix', ('', '', 6))
#
# Python 3.3.1 (default, Apr 26 2013, 12:08:46)
# >>> imp.find_module('posix')
# (None, None, ('', '', 6))
try:
_, mp_filename, mp_desc = find_module(modname, path)
except ImportError:
if checkeggs:
return _search_zip(modpath, pic)[:2]
raise
else:
if checkeggs and mp_filename:
fullabspath = [abspath(x) for x in _path]
try:
pathindex = fullabspath.index(dirname(abspath(mp_filename)))
emtype, emp_filename, zippath = _search_zip(modpath, pic)
if pathindex > _path.index(zippath):
# an egg takes priority
return emtype, emp_filename
except ValueError:
# XXX not in _path
pass
except ImportError:
pass
checkeggs = False
imported.append(modpath.pop(0))
mtype = mp_desc[2]
if modpath:
if mtype != PKG_DIRECTORY:
raise ImportError('No module %s in %s' % ('.'.join(modpath),
'.'.join(imported)))
# XXX guess if package is using pkgutil.extend_path by looking for
# those keywords in the first four Kbytes
try:
with open(join(mp_filename, '__init__.py')) as stream:
data = stream.read(4096)
except IOError:
path = [mp_filename]
else:
if 'pkgutil' in data and 'extend_path' in data:
# extend_path is called, search sys.path for module/packages
# of this name see pkgutil.extend_path docuementation
path = [join(p, *imported) for p in sys.path
if isdir(join(p, *imported))]
else:
path = [mp_filename]
return mtype, mp_filename
0
Example 22
Project: python-mode Source File: modutils.py
def _module_file(modpath, path=None):
"""get a module type / file path
:type modpath: list or tuple
:param modpath:
splitted module's name (i.e name of a module or package splitted
on '.'), with leading empty strings for explicit relative import
:type path: list or None
:param path:
optional list of path where the module or package should be
searched (use sys.path if nothing or None is given)
:rtype: tuple(int, str)
:return: the module type flag and the file path for a module
"""
# egg support compat
try:
pic = sys.path_importer_cache
_path = (path is None and sys.path or path)
for __path in _path:
if not __path in pic:
try:
pic[__path] = zipimport.zipimporter(__path)
except zipimport.ZipImportError:
pic[__path] = None
checkeggs = True
except AttributeError:
checkeggs = False
# pkg_resources support (aka setuptools namespace packages)
if (pkg_resources is not None
and modpath[0] in pkg_resources._namespace_packages
and modpath[0] in sys.modules
and len(modpath) > 1):
# setuptools has added into sys.modules a module object with proper
# __path__, get back information from there
module = sys.modules[modpath.pop(0)]
path = module.__path__
imported = []
while modpath:
modname = modpath[0]
# take care to changes in find_module implementation wrt builtin modules
#
# Python 2.6.6 (r266:84292, Sep 11 2012, 08:34:23)
# >>> imp.find_module('posix')
# (None, 'posix', ('', '', 6))
#
# Python 3.3.1 (default, Apr 26 2013, 12:08:46)
# >>> imp.find_module('posix')
# (None, None, ('', '', 6))
try:
stream, mp_filename, mp_desc = imp.find_module(modname, path)
except ImportError:
if checkeggs:
return _search_zip(modpath, pic)[:2]
raise
else:
# Don't forget to close the stream to avoid
# spurious ResourceWarnings.
if stream:
stream.close()
if checkeggs and mp_filename:
fullabspath = [_cache_normalize_path(x) for x in _path]
try:
pathindex = fullabspath.index(os.path.dirname(_normalize_path(mp_filename)))
emtype, emp_filename, zippath = _search_zip(modpath, pic)
if pathindex > _path.index(zippath):
# an egg takes priority
return emtype, emp_filename
except ValueError:
# XXX not in _path
pass
except ImportError:
pass
checkeggs = False
imported.append(modpath.pop(0))
mtype = mp_desc[2]
if modpath:
if mtype != imp.PKG_DIRECTORY:
raise ImportError('No module %s in %s' % ('.'.join(modpath),
'.'.join(imported)))
# XXX guess if package is using pkgutil.extend_path by looking for
# those keywords in the first four Kbytes
try:
with open(os.path.join(mp_filename, '__init__.py'), 'rb') as stream:
data = stream.read(4096)
except IOError:
path = [mp_filename]
else:
if b'pkgutil' in data and b'extend_path' in data:
# extend_path is called, search sys.path for module/packages
# of this name see pkgutil.extend_path docuementation
path = [os.path.join(p, *imported) for p in sys.path
if os.path.isdir(os.path.join(p, *imported))]
else:
path = [mp_filename]
return mtype, mp_filename
0
Example 23
Project: python-mode Source File: modutils.py
def _module_file(modpath, path=None):
"""get a module type / file path
:type modpath: list or tuple
:param modpath:
splitted module's name (i.e name of a module or package splitted
on '.'), with leading empty strings for explicit relative import
:type path: list or None
:param path:
optional list of path where the module or package should be
searched (use sys.path if nothing or None is given)
:rtype: tuple(int, str)
:return: the module type flag and the file path for a module
"""
# egg support compat
try:
pic = sys.path_importer_cache
_path = (path is None and sys.path or path)
for __path in _path:
if not __path in pic:
try:
pic[__path] = zipimport.zipimporter(__path)
except zipimport.ZipImportError:
pic[__path] = None
checkeggs = True
except AttributeError:
checkeggs = False
# pkg_resources support (aka setuptools namespace packages)
if (_is_namespace(modpath[0]) and modpath[0] in sys.modules):
# setuptools has added into sys.modules a module object with proper
# __path__, get back information from there
module = sys.modules[modpath.pop(0)]
path = module.__path__
if not modpath:
return C_BUILTIN, None
imported = []
while modpath:
modname = modpath[0]
# take care to changes in find_module implementation wrt builtin modules
#
# Python 2.6.6 (r266:84292, Sep 11 2012, 08:34:23)
# >>> imp.find_module('posix')
# (None, 'posix', ('', '', 6))
#
# Python 3.3.1 (default, Apr 26 2013, 12:08:46)
# >>> imp.find_module('posix')
# (None, None, ('', '', 6))
try:
_, mp_filename, mp_desc = find_module(modname, path)
except ImportError:
if checkeggs:
return _search_zip(modpath, pic)[:2]
raise
else:
if checkeggs and mp_filename:
fullabspath = [abspath(x) for x in _path]
try:
pathindex = fullabspath.index(dirname(abspath(mp_filename)))
emtype, emp_filename, zippath = _search_zip(modpath, pic)
if pathindex > _path.index(zippath):
# an egg takes priority
return emtype, emp_filename
except ValueError:
# XXX not in _path
pass
except ImportError:
pass
checkeggs = False
imported.append(modpath.pop(0))
mtype = mp_desc[2]
if modpath:
if mtype != PKG_DIRECTORY:
raise ImportError('No module %s in %s' % ('.'.join(modpath),
'.'.join(imported)))
# XXX guess if package is using pkgutil.extend_path by looking for
# those keywords in the first four Kbytes
try:
with open(join(mp_filename, '__init__.py')) as stream:
data = stream.read(4096)
except IOError:
path = [mp_filename]
else:
if 'pkgutil' in data and 'extend_path' in data:
# extend_path is called, search sys.path for module/packages
# of this name see pkgutil.extend_path docuementation
path = [join(p, *imported) for p in sys.path
if isdir(join(p, *imported))]
else:
path = [mp_filename]
return mtype, mp_filename