What does a double underscore mean in a Python import statement?

Question

The documentation for Amazon Neptune contains the following code sample.

from __future__  import print_function  # Python 2/3 compatibility

from gremlin_python import statics
from gremlin_python.structure.graph import Graph
from gremlin_python.process.graph_traversal import __
from gremlin_python.process.strategies import *
from gremlin_python.driver.driver_remote_connection import DriverRemoteConnection

graph = Graph()

remoteConn = DriverRemoteConnection('wss://your-neptune-endpoint:8182/gremlin','g')
g = graph.traversal().withRemote(remoteConn)

print(g.V().limit(2).toList())
remoteConn.close()

Question: What does the double underscore mean in line number 4?

Since this is being used in an import statement, it must somehow be different than "name mangling" in Python class definitions. I'm just not clear on what it's intended to do.

Answer 1

It's nothing special. You can find the code online and see there is a class with that name in the package that is being imported.