Tukukkk

I'm creating some python script in Raspberry Pi to running fingerprint scan and compare it against database. Using this library, on raspberry start this script will get all the database record for fingerprint characteristics and the for loops will compare it. After getting about 100 records the loops is running very slow.

import RPi.GPIO as GPIO

import time

import requests

import hashlib

import MySQLdb

from pyfingerprint.pyfingerprint import PyFingerprint



def connect():

    return MySQLdb.connect(host="192.168.1.1", user="root", passwd="123456", db="abc")



GPIO.setmode(GPIO.BOARD)

GPIO.setup(18, GPIO.OUT)

GPIO.output(18, GPIO.LOW)



try:

    f = PyFingerprint('/dev/ttyUSB1', 57600, 0xFFFFFFFF, 0x00000000)



    if ( f.verifyPassword() == False ):

        raise ValueError('The given fingerprint sensor password is wrong!')



except Exception as e:

    print('The fingerprint sensor could not be initialized!')

    print('Exception message: ' + str(e))

    pass



db = connect()

cur = db.cursor()

cur.execute("SELECT * FROM fingers")

row = cur.fetchall()

while True:

    try:

        print('Waiting for finger...')

        while(f.readImage() == False):

            pass



        f.convertImage(0x01)



        for ro in row:

            ss = eval(ro[2])

            f.uploadCharacteristics(0x02,eval(ss))

            if ( f.compareCharacteristics() == 0 ):

                #print('Fingers do not match')

                pass

            else:

                #print('Finger Match')

                GPIO.output(18, GPIO.HIGH)

                time.sleep(1)

                GPIO.output(18, GPIO.LOW)

                time.sleep(1)

                break

    #db.close()



    except Exception as e:

        print('Operation failed!')

        print('Exception message: ' + str(e))

        pass

Any suggestion? Thanks