You can copy the supplied sample-config to your home directory and move it to
$XDG_CONFIG_HOME/bpython/config [1]. bpython tries to find
$XDG_CONFIG_HOME/bpython/config and use it as its configuration, if the
file does not exist bpython will use its documented defaults.
| [1] | $XDG_CONFIG_HOME defaults to ~/.config if not set. |