/opt/imh-python/lib/python3.9/site-packages/zmq/eventloop/minitornado
Edit: /opt/imh-python/lib/python3.9/site-packages/zmq/eventloop/minitornado/concurrent.py (459B)
"""pyzmq does not ship tornado's futures,
this just raises informative NotImplementedErrors to avoid having to change too much code.
"""
class NotImplementedFuture(object):
def __init__(self, *args, **kwargs):
raise NotImplementedError("pyzmq does not ship tornado's Futures, "
"install tornado >= 3.0 for future support."
)
Future = TracebackFuture = NotImplementedFuture
def is_future(x):
return isinstance(x, Future)