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)
python类NullImporter()的实例源码
def test_pythontypes(self):
# check all types defined in Python/
h = self.header
vh = self.vheader
size = self.calcsize
check = self.check_sizeof
# _ast.AST
import _ast
check(_ast.AST(), size(h + ''))
# imp.NullImporter
import imp
check(imp.NullImporter(self.file.name), size(h + ''))
try:
raise TypeError
except TypeError:
tb = sys.exc_info()[2]
# traceback
if tb != None:
check(tb, size(h + '2P2i'))
# symtable entry
# XXX
# sys.flags
check(sys.flags, size(vh) + self.P * len(sys.flags))
def test_pythontypes(self):
# check all types defined in Python/
size = test.test_support.calcobjsize
vsize = test.test_support.calcvobjsize
check = self.check_sizeof
# _ast.AST
import _ast
check(_ast.AST(), size(''))
# imp.NullImporter
import imp
check(imp.NullImporter(self.file.name), size(''))
try:
raise TypeError
except TypeError:
tb = sys.exc_info()[2]
# traceback
if tb != None:
check(tb, size('2P2i'))
# symtable entry
# XXX
# sys.flags
check(sys.flags, vsize('') + self.P * len(sys.flags))
def test_pythontypes(self):
# check all types defined in Python/
size = test.test_support.calcobjsize
vsize = test.test_support.calcvobjsize
check = self.check_sizeof
# _ast.AST
import _ast
check(_ast.AST(), size(''))
# imp.NullImporter
import imp
check(imp.NullImporter(self.file.name), size(''))
try:
raise TypeError
except TypeError:
tb = sys.exc_info()[2]
# traceback
if tb != None:
check(tb, size('2P2i'))
# symtable entry
# XXX
# sys.flags
check(sys.flags, vsize('') + self.P * len(sys.flags))
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
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
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
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
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
def test_unencodeable(self):
name = support.TESTFN_UNENCODABLE
os.mkdir(name)
try:
self.assertRaises(ImportError, imp.NullImporter, name)
finally:
os.rmdir(name)
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
def test_pythontypes(self):
# check all types defined in Python/
size = test.test_support.calcobjsize
vsize = test.test_support.calcvobjsize
check = self.check_sizeof
# _ast.AST
import _ast
check(_ast.AST(), size(''))
# imp.NullImporter
import imp
f = open(test.test_support.TESTFN, 'wb')
try:
check(imp.NullImporter(f.name), size(''))
finally:
f.close()
test.test_support.unlink(test.test_support.TESTFN)
try:
raise TypeError
except TypeError:
tb = sys.exc_info()[2]
# traceback
if tb != None:
check(tb, size('2P2i'))
# symtable entry
# XXX
# sys.flags
check(sys.flags, vsize('') + self.P * len(sys.flags))
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
def test_pythontypes(self):
# check all types defined in Python/
size = test.test_support.calcobjsize
vsize = test.test_support.calcvobjsize
check = self.check_sizeof
# _ast.AST
import _ast
check(_ast.AST(), size(''))
# imp.NullImporter
import imp
f = open(test.test_support.TESTFN, 'wb')
try:
check(imp.NullImporter(f.name), size(''))
finally:
f.close()
test.test_support.unlink(test.test_support.TESTFN)
try:
raise TypeError
except TypeError:
tb = sys.exc_info()[2]
# traceback
if tb != None:
check(tb, size('2P2i'))
# symtable entry
# XXX
# sys.flags
check(sys.flags, vsize('') + self.P * len(sys.flags))
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
def test_unencodeable(self):
name = support.TESTFN_UNENCODABLE
os.mkdir(name)
try:
self.assertRaises(ImportError, imp.NullImporter, name)
finally:
os.rmdir(name)
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.
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
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
def test_unencodeable(self):
name = support.TESTFN_UNENCODABLE
os.mkdir(name)
try:
self.assertRaises(ImportError, imp.NullImporter, name)
finally:
os.rmdir(name)
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
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
def test_unencodeable(self):
name = support.TESTFN_UNENCODABLE
os.mkdir(name)
try:
self.assertRaises(ImportError, imp.NullImporter, name)
finally:
os.rmdir(name)
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
def run_path(path_name, init_globals=None, run_name=None):
"""Execute code located at the specified filesystem location
Returns the resulting top level namespace dictionary
The file path may refer directly to a Python script (i.e.
one that could be directly executed with execfile) or else
it may refer to a zipfile or directory containing a top
level __main__.py script.
"""
if run_name is None:
run_name = "<run_path>"
importer = _get_importer(path_name)
if isinstance(importer, imp.NullImporter):
# Not a valid sys.path entry, so run the code directly
# execfile() doesn't help as we want to allow compiled files
code = _get_code_from_file(path_name)
return _run_module_code(code, init_globals, run_name, path_name)
else:
# Importer is defined for path, so add it to
# the start of sys.path
sys.path.insert(0, path_name)
try:
# Here's where things are a little different from the run_module
# case. There, we only had to replace the module in sys while the
# code was running and doing so was somewhat optional. Here, we
# have no choice and we have to remove it even while we read the
# code. If we don't do this, a __loader__ attribute in the
# existing __main__ module may prevent location of the new module.
main_name = "__main__"
saved_main = sys.modules[main_name]
del sys.modules[main_name]
try:
mod_name, loader, code, fname = _get_main_module_details()
finally:
sys.modules[main_name] = saved_main
pkg_name = ""
with _TempModule(run_name) as temp_module, \
_ModifiedArgv0(path_name):
mod_globals = temp_module.module.__dict__
return _run_code(code, mod_globals, init_globals,
run_name, fname, loader, pkg_name).copy()
finally:
try:
sys.path.remove(path_name)
except ValueError:
pass
def run_path(path_name, init_globals=None, run_name=None):
"""Execute code located at the specified filesystem location
Returns the resulting top level namespace dictionary
The file path may refer directly to a Python script (i.e.
one that could be directly executed with execfile) or else
it may refer to a zipfile or directory containing a top
level __main__.py script.
"""
if run_name is None:
run_name = "<run_path>"
importer = _get_importer(path_name)
if isinstance(importer, imp.NullImporter):
# Not a valid sys.path entry, so run the code directly
# execfile() doesn't help as we want to allow compiled files
code = _get_code_from_file(path_name)
return _run_module_code(code, init_globals, run_name, path_name)
else:
# Importer is defined for path, so add it to
# the start of sys.path
sys.path.insert(0, path_name)
try:
# Here's where things are a little different from the run_module
# case. There, we only had to replace the module in sys while the
# code was running and doing so was somewhat optional. Here, we
# have no choice and we have to remove it even while we read the
# code. If we don't do this, a __loader__ attribute in the
# existing __main__ module may prevent location of the new module.
main_name = "__main__"
saved_main = sys.modules[main_name]
del sys.modules[main_name]
try:
mod_name, loader, code, fname = _get_main_module_details()
finally:
sys.modules[main_name] = saved_main
pkg_name = ""
with _TempModule(run_name) as temp_module, \
_ModifiedArgv0(path_name):
mod_globals = temp_module.module.__dict__
return _run_code(code, mod_globals, init_globals,
run_name, fname, loader, pkg_name).copy()
finally:
try:
sys.path.remove(path_name)
except ValueError:
pass
def run_path(path_name, init_globals=None, run_name=None):
"""Execute code located at the specified filesystem location
Returns the resulting top level namespace dictionary
The file path may refer directly to a Python script (i.e.
one that could be directly executed with execfile) or else
it may refer to a zipfile or directory containing a top
level __main__.py script.
"""
if run_name is None:
run_name = "<run_path>"
importer = _get_importer(path_name)
if isinstance(importer, imp.NullImporter):
# Not a valid sys.path entry, so run the code directly
# execfile() doesn't help as we want to allow compiled files
code = _get_code_from_file(path_name)
return _run_module_code(code, init_globals, run_name, path_name)
else:
# Importer is defined for path, so add it to
# the start of sys.path
sys.path.insert(0, path_name)
try:
# Here's where things are a little different from the run_module
# case. There, we only had to replace the module in sys while the
# code was running and doing so was somewhat optional. Here, we
# have no choice and we have to remove it even while we read the
# code. If we don't do this, a __loader__ attribute in the
# existing __main__ module may prevent location of the new module.
main_name = "__main__"
saved_main = sys.modules[main_name]
del sys.modules[main_name]
try:
mod_name, loader, code, fname = _get_main_module_details()
finally:
sys.modules[main_name] = saved_main
pkg_name = ""
with _TempModule(run_name) as temp_module, \
_ModifiedArgv0(path_name):
mod_globals = temp_module.module.__dict__
return _run_code(code, mod_globals, init_globals,
run_name, fname, loader, pkg_name).copy()
finally:
try:
sys.path.remove(path_name)
except ValueError:
pass
def run_path(path_name, init_globals=None, run_name=None):
"""Execute code located at the specified filesystem location
Returns the resulting top level namespace dictionary
The file path may refer directly to a Python script (i.e.
one that could be directly executed with execfile) or else
it may refer to a zipfile or directory containing a top
level __main__.py script.
"""
if run_name is None:
run_name = "<run_path>"
importer = _get_importer(path_name)
if isinstance(importer, imp.NullImporter):
# Not a valid sys.path entry, so run the code directly
# execfile() doesn't help as we want to allow compiled files
code = _get_code_from_file(path_name)
return _run_module_code(code, init_globals, run_name, path_name)
else:
# Importer is defined for path, so add it to
# the start of sys.path
sys.path.insert(0, path_name)
try:
# Here's where things are a little different from the run_module
# case. There, we only had to replace the module in sys while the
# code was running and doing so was somewhat optional. Here, we
# have no choice and we have to remove it even while we read the
# code. If we don't do this, a __loader__ attribute in the
# existing __main__ module may prevent location of the new module.
main_name = "__main__"
saved_main = sys.modules[main_name]
del sys.modules[main_name]
try:
mod_name, loader, code, fname = _get_main_module_details()
finally:
sys.modules[main_name] = saved_main
pkg_name = ""
with _TempModule(run_name) as temp_module, \
_ModifiedArgv0(path_name):
mod_globals = temp_module.module.__dict__
return _run_code(code, mod_globals, init_globals,
run_name, fname, loader, pkg_name).copy()
finally:
try:
sys.path.remove(path_name)
except ValueError:
pass
def run_path(path_name, init_globals=None, run_name=None):
"""Execute code located at the specified filesystem location
Returns the resulting top level namespace dictionary
The file path may refer directly to a Python script (i.e.
one that could be directly executed with execfile) or else
it may refer to a zipfile or directory containing a top
level __main__.py script.
"""
if run_name is None:
run_name = "<run_path>"
importer = _get_importer(path_name)
if isinstance(importer, imp.NullImporter):
# Not a valid sys.path entry, so run the code directly
# execfile() doesn't help as we want to allow compiled files
code = _get_code_from_file(path_name)
return _run_module_code(code, init_globals, run_name, path_name)
else:
# Importer is defined for path, so add it to
# the start of sys.path
sys.path.insert(0, path_name)
try:
# Here's where things are a little different from the run_module
# case. There, we only had to replace the module in sys while the
# code was running and doing so was somewhat optional. Here, we
# have no choice and we have to remove it even while we read the
# code. If we don't do this, a __loader__ attribute in the
# existing __main__ module may prevent location of the new module.
main_name = "__main__"
saved_main = sys.modules[main_name]
del sys.modules[main_name]
try:
mod_name, loader, code, fname = _get_main_module_details()
finally:
sys.modules[main_name] = saved_main
pkg_name = ""
with _TempModule(run_name) as temp_module, \
_ModifiedArgv0(path_name):
mod_globals = temp_module.module.__dict__
return _run_code(code, mod_globals, init_globals,
run_name, fname, loader, pkg_name).copy()
finally:
try:
sys.path.remove(path_name)
except ValueError:
pass
def run_path(path_name, init_globals=None, run_name=None):
"""Execute code located at the specified filesystem location
Returns the resulting top level namespace dictionary
The file path may refer directly to a Python script (i.e.
one that could be directly executed with execfile) or else
it may refer to a zipfile or directory containing a top
level __main__.py script.
"""
if run_name is None:
run_name = "<run_path>"
importer = _get_importer(path_name)
if isinstance(importer, imp.NullImporter):
# Not a valid sys.path entry, so run the code directly
# execfile() doesn't help as we want to allow compiled files
code = _get_code_from_file(path_name)
return _run_module_code(code, init_globals, run_name, path_name)
else:
# Importer is defined for path, so add it to
# the start of sys.path
sys.path.insert(0, path_name)
try:
# Here's where things are a little different from the run_module
# case. There, we only had to replace the module in sys while the
# code was running and doing so was somewhat optional. Here, we
# have no choice and we have to remove it even while we read the
# code. If we don't do this, a __loader__ attribute in the
# existing __main__ module may prevent location of the new module.
main_name = "__main__"
saved_main = sys.modules[main_name]
del sys.modules[main_name]
try:
mod_name, loader, code, fname = _get_main_module_details()
finally:
sys.modules[main_name] = saved_main
pkg_name = ""
with _TempModule(run_name) as temp_module, \
_ModifiedArgv0(path_name):
mod_globals = temp_module.module.__dict__
return _run_code(code, mod_globals, init_globals,
run_name, fname, loader, pkg_name).copy()
finally:
try:
sys.path.remove(path_name)
except ValueError:
pass
