is threading.Thread().start() okay python code example

Example 1: threading python

import threading

def worker(argument):
    print(argument)
    return

for i in range(5):
    t = threading.Thread(target=worker, args=[i])
    t.start()

Example 2: threading python

import threading
import time

def thread_function(name):
     print(f"Thread {name}: starting")
     time.sleep(2)
     print(f"Thread {name}: finishing")
 
my_thread = threading.Thread(target=thread_function, args=(1,))
my_thread.start()
time.sleep(1)
my_second_thread = threading.Thread(target=thread_function, args=(2,))
my_second_thread.start()
my_second_thread.join() # Wait until thread finishes to exit