def __import__(*args, **kwargs):
"""
__import__(name, globals=None, locals=None, fromlist=(), level=0) -> object
Normally python protects imports against concurrency by doing some locking
at the C level (at least, it does that in CPython). This function just
wraps the normal __import__ functionality in a recursive lock, ensuring that
we're protected against greenlet import concurrency as well.
"""
if args and not issubclass(type(args[0]), _allowed_module_name_types):
# if a builtin has been acquired as a bound instance method,
# python knows not to pass 'self' when the method is called.
# No such protection exists for monkey-patched builtins,
# however, so this is necessary.
args = args[1:]
if not __lock_imports:
return _import(*args, **kwargs)
module_lock = __module_lock(args[0]) # Get a lock for the module name
imp_acquire_lock()
try:
module_lock.acquire()
try:
result = _import(*args, **kwargs)
finally:
module_lock.release()
finally:
imp_release_lock()
return result
def __import__(*args, **kwargs):
"""
__import__(name, globals=None, locals=None, fromlist=(), level=0) -> object
Normally python protects imports against concurrency by doing some locking
at the C level (at least, it does that in CPython). This function just
wraps the normal __import__ functionality in a recursive lock, ensuring that
we're protected against greenlet import concurrency as well.
"""
if args and not issubclass(type(args[0]), _allowed_module_name_types):
# if a builtin has been acquired as a bound instance method,
# python knows not to pass 'self' when the method is called.
# No such protection exists for monkey-patched builtins,
# however, so this is necessary.
args = args[1:]
if not __lock_imports:
return _import(*args, **kwargs)
module_lock = __module_lock(args[0]) # Get a lock for the module name
imp_acquire_lock()
try:
module_lock.acquire()
try:
result = _import(*args, **kwargs)
finally:
module_lock.release()
finally:
imp_release_lock()
return result
def __exit__(self, t, v, tb):
try:
self._restore()
finally:
imp_release_lock()
self._t_modules_to_restore = None
def __exit__(self, t, v, tb):
try:
self._restore()
finally:
imp_release_lock()
def __exit__(self, t, v, tb):
try:
self._restore()
finally:
imp_release_lock()