HIDInput.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
Handling raw data inputs example
"""
from time import sleep
from msvcrt import kbhit

import pywinusb.hid as hid

import sys
if sys.version_info >= (3,):
    # as is, don't handle unicodes
    unicode = str
    raw_input = input
else:
    # allow to show encoded strings
    import codecs
    sys.stdout = codecs.getwriter('mbcs')(sys.stdout)

def List_All_HID_Devices():
    return hid.find_all_hid_devices()

def Choose_HID_Device():
    all_hids = List_All_HID_Devices()
    if all_hids:
        while True:
            print("\nChoose a device to monitor raw input reports:\n")
            print("0 => Exit")
            for index, device in enumerate(all_hids):
                device_name = unicode("{0.vendor_name} {0.product_name}" \
                        "(vID=0x{1:04x}, pID=0x{2:04x})"\
                        "".format(device, device.vendor_id, device.product_id))
                print("{0} => {1}".format(index+1, device_name))
            print("\nDevice ('0' to '%d', '0' to exit?) " \
                    "[press enter after number]:" % len(all_hids), end=' ')
            index_option = raw_input()
            if index_option.isdigit() and int(index_option) <= len(all_hids):
                # invalid
                break        
        int_option = int(index_option)
        if int_option:
            device = all_hids[int_option-1]
            return device
        else:
            return None
    else:
        print("There's not any non system HID class device available")
        return None

def Device_Loop(device, handler):
    try:
        device.open()
        device.set_raw_data_handler(handler)
        print("\nWaiting for data...\nPress any (system keyboard) key to stop...")
        while not kbhit() and device.is_plugged():
            # just keep the device opened to receive events
            sleep(0.5)
    finally:
        device.close()