Turn off all suggestions (only enable syntax highlighting) #883

How can I configure bpython to stop giving suggestions? I would like to use it only for syntax highlighting.

I have looked at the configuration documentation, but cannot find a setting to do this... autocomplete_mode seems the most promising, but:

1. there is no "None" option
2. the documentation states that, "As of version 0.14 this option has no effect, but is reserved for later use."