Решения на первый блок

STEP1_Basics/8_Threads/main.py

@@ -0,0 +1,44 @@
+from threading import Thread
+from queue import Queue
+from time import sleep
+
+sum = 0
+access = 0 # Var for control who is allowed access for sum, start with 0 Thread
+threads = 3
+th_pool = []
+is_live = [0] * threads
+
+def worker(i):
+	global sum, access, threads, th_pool, is_live
+	th_pool.append(i)
+	is_live[i] = 1
+	# Wait until all threads is registred
+	while len(th_pool) != threads:
+		sleep(0.1)
+	for _ in range(3):
+		#sleep(threads)
+		while access != i:
+			sleep(0.1)
+		sum += 1
+		print(f'T{i} | {sum}')
+		sleep(0.1)
+		# Transfer access
+		if len(th_pool) > 1:
+			ind = th_pool.index(i)
+			next = ind + 1
+			if next > threads - 1:
+				next = 0
+			access = next
+		else:
+			access = i
+	is_live[i] = 0
+
+for i in range(threads):
+	th = Thread(target = worker, args = (i,))
+	th.start()
+
+# Wait untill all ended
+while is_live != [0] * threads:
+	sleep(0.1)
+
+print(f'\nSUM: {sum}')