def get_setting(name):
dh = getattr(settings, '<STR_LIT>', {})<EOL>result = None<EOL>for k in name.split('<STR_LIT:.>'):<EOL><INDENT>if dh is None:<EOL><INDENT>continue<EOL><DEDENT>result = dh.get(k, None)<EOL>dh = result<EOL><DEDENT>return result<EOL>
Looks for settings under DJANGO_HISTORY_SETTINGS, supporting dot notation for nested lookups,
    eg. get_setting('EXCLUDE_CHANGES.fields')