for_chat_DA_2

import random

message = 'Sorry, but there is more then 100 tries to find given value'
check777 = []
counter = 0
max_iterations = 1000

for i in range(max_iterations):

    res = [random.randrange(10**3) for i in range(10**3)]
    check = [(idx, val) for idx, val in enumerate(res) if val == 777]
    if len(check) > 0:
        check777 += check

    if counter == 100:
        if len(check777) < 100:
            print(message)
        else:
            print('Ok')

        print(check777)
        print(len(check777))

        break

    counter += 1