Guess game

import random


def testrandom():
    flag = 0
    while flag == 0:
        numbers = int(random.random() * 1000)
        if 100 < numbers and numbers < 300:
            flag = 1
            return numbers


def gameshow(SOLANCHIENTHANG = 0, SOLANDOANCUABAN = 0):
    number = testrandom()
    print("number = ", number)

    choose = True
    solandoan = 0
    for i in range(1, 5):
        doanso = int(input("nhap so ban doan: "))
        SOLANDOANCUABAN = SOLANDOANCUABAN + 1
        if doanso == number:
            SOLANCHIENTHANG = SOLANCHIENTHANG + 1
            print("CHUC MUNG BAN DA DOAN DUNG! SO DO LA ", number)

            while choose:
                print(doanso, number, SOLANCHIENTHANG)
                playagain = input("Ban co muon choi tiep (YES/NO)")
                if playagain.upper() == 'YES':
                    gameshow(SOLANCHIENTHANG, SOLANDOANCUABAN)
                    choose = False
                elif playagain.upper() == 'NO':
                    print("Ban da doan chinh xac %s lan, trong %s lan" % (SOLANCHIENTHANG, SOLANDOANCUABAN))
                    choose = False
            break
        else:
            if abs(number - doanso) < 10:
                print("BAN DOAN GAN DUNG ROI DO")
            else:
                solandoan = solandoan + 1
                print("BAN DA DOAN SAI %s LAN" % solandoan)


    return None


gameshow()