def __exit__(self, type, value, traceback): # noqa: A002
final_contexts = _state.contexts
_state.contexts = self.old_contexts
if final_contexts is not self.new_contexts:
raise StackContextInconsistentError(
"stack_context inconsistency (may be caused by yield "
'within a "with TracerStackContext" block)')
# break the reference to allow faster GC on CPython
self.new_contexts = None
def __exit__(self, type, value, traceback):
final_contexts = _state.contexts
_state.contexts = self.old_contexts
if final_contexts is not self.new_contexts:
raise StackContextInconsistentError(
'stack_context inconsistency (may be caused by yield '
'within a "with StackContext" block)')
# Break up a reference to itself to allow for faster GC on CPython.
self.new_contexts = None