custom_strategy ImportError: cannot import name 'bitmex' from 'market_maker'

I have successfully installed market maker via the “getting started” instructions in the README.

I am on Mac OSX 10.10.5

I can successfully run “marketmaker XBTUSD” using DRYRUN=True on testnet and get the expected output.

What I am having trouble with and don’t understand how to do is running the custom strategy.

Executing the following:

python3 market_maker/custom_strategy.py

gives the following error:

Traceback (most recent call last):
  File "market_maker/custom_strategy.py", line 3, in <module>
    from market_maker.market_maker import OrderManager
  File "/Users/MYUSERNAME/python_projects/market_maker/market_maker.py", line 11, in <module>
    from market_maker import bitmex
ImportError: cannot import name 'bitmex' from 'market_maker' (/Users/MYUSERNAME/python_projects/market_maker/market_maker.py)

Can someone explain step-by-step what has to be done to execute a custom strategy?

Thank you.

[ryanfox]

Instead of running the custom strategy directly (python3 market_maker/custom_strategy.py), create a script to run it from the top-level directory, similar to marketmaker (note no extension):

from market_maker import custom_strategy
custom_strategy.run()

[SaleProperly]

ryanfox has the best correct answer. Thank you.