hidconsole has to be run in unbuffered mode

bin/hidconsole

@@ -3,6 +3,7 @@
 Z=`readlink -f "$0"`
 LIB=`readlink -f $(dirname "$Z")/../lib`
 export PYTHONPATH=$LIB
+export PYTHONUNBUFFERED=yes
 
 PYTHON=${PYTHON:-`which python python2 python3 | head -n 1`}
 exec $PYTHON -m hidapi.hidconsole "$@"

lib/hidapi/hidconsole.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python -u
 
 import os
 import sys