import threading

data_list = []


def task(arg):
    data_list.append(arg)
    print(data_list)


def run():
    for i in range(10):
        p = threading.Thread(target=task, args=(i,))
        p.start()


if __name__ == '__main__':
    run()
	
'''
[0]
[0, 1]
[0, 1, 2]
[0, 1, 2, 3]
[0, 1, 2, 3, 4]
[0, 1, 2, 3, 4, 5]
[0, 1, 2, 3, 4, 5, 6]
[0, 1, 2, 3, 4, 5, 6, 7]
[0, 1, 2, 3, 4, 5, 6, 7, 8]
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
'''