The NgspiceProtocol puts one of these in the queue and returns it from its NgspiceProtocol.response method to indicate that it's shutting down.

Method __nonzero__ I evaluate as False to act like an empty list.
Method __iter__ Undocumented
Method next Undocumented
Method __len__ Undocumented
def __nonzero__(self):

I evaluate as False to act like an empty list.

In particular, I don't want NgspiceProtocol.response or Commander to think I have lines of output.

def __iter__(self):
Undocumented
def next(self):
Undocumented
def __len__(self):
Undocumented
API Documentation for pingspice, generated by pydoctor at 2021-09-18 08:41:11.