(self)
return new_stack
Preserve the context stack by transferring it to a new instance.
Preserve the context stack by transferring it to a new instance.
Preserve the context stack by transferring it to a new instance .
def pop_all(self):
        """Preserve the context stack by transferring it to a new instance."""
        new_stack = type(self)()
        new_stack._exit_callbacks = self._exit_callbacks
        self._exit_callbacks = deque()
        return new_stack
def pop_all ( self ) : new_stack = type ( self ) ( ) new_stack . _exit_callbacks = self . _exit_callbacks self . _exit_callbacks = deque ( ) return new_stack