def multiprocessing_transform():
module = AstroidBuilder(MANAGER).string_build(dedent('''
from multiprocessing.managers import SyncManager
def Manager():
return SyncManager()
'''))
if not PY34:
return module
# On Python 3.4, multiprocessing uses a getattr lookup inside contexts,
# in order to get the attributes they need. Since it's extremely
# dynamic, we use this approach to fake it.
node = AstroidBuilder(MANAGER).string_build(dedent('''
from multiprocessing.context import DefaultContext, BaseContext
default = DefaultContext()
base = BaseContext()
'''))
try:
context = next(node['default'].infer())
base = next(node['base'].infer())
except InferenceError:
return module
for node in (context, base):
for key, value in node._locals.items():
if key.startswith("_"):
continue
value = value[0]
if isinstance(value, nodes.FunctionDef):
# We need to rebound this, since otherwise
# it will have an extra argument (self).
value = BoundMethod(value, node)
module[key] = value
return module
def pycache_clear(self):
node = extract_node("""def cache_clear(self): pass""")
return BoundMethod(proxy=node, bound=self._instance.parent.scope())