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Standard nodes should be in the exact same file: steem/steemd.py
Perhaps in a different line, though ( Too lazy to check :P )
This is the right moment to transition from piston to steem-python ;)

It doesn't have that file just steem.py in site-packages/piston will attempt the transition. Expect more questions :))

try changing the nodes in:
piston/storage.py in line 261
... for a quick fix.

For a transition to Steem-Python, I'd recommend new my tutorial series ;)
Feel free to ask any questions there !

Thanks for the tips, I managed to do it in my script instead nodes = ['wss://steemd.minnowsupportproject.org','wss://rpc.buildteam.io/','wss://rpc.steemliberator.com']
steem = Steem(nodes, wif = [posting_key])

Hoping to make the changeover in the future and will check out your tutorial series!

It's funny how that exact move doesn't work for Steem-Python anymore :D

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