Explain multithreading. code example

Example 1: multithreading

//Bless anyone who decides to follow this path

Example 2: multithreading

from multiprocessing.pool import ThreadPool

def stringFunction(value):
    my_str = 3 + value
    return my_str


def stringFunctio(value):
    my_str = 33 + value
    return my_str

pool = ThreadPool(processes=2)

thread1 = pool.apply_async(stringFunction,(8,))
thread2 = pool.apply_async(stringFunctio,(8,))

return_val = thread1.get()
return_val1 = thread2.get()