full_cpu_loading.py

from concurrent.futures import ProcessPoolExecutor
import multiprocessing


def infinite_compute(a):
    print('Core', a)
    while True:
        x = 2 * 2
        

print('Ctrl+C to exit')

try:
    with ProcessPoolExecutor() as executor:
        executor.map(infinite_compute, list(range(multiprocessing.cpu_count())))
except KeyboardInterrupt:
    exit()