update

2022.03.16_frequently_used_python_package/multiprocessing_example.py

@@ -2,22 +2,23 @@ from multiprocessing import Process
 import time
 
 def f(name):
-    time.sleep(5)
-    print('Hello', name)
+    for i in range(5):
+        time.sleep(1)
+        print('Hello', name, i)
 
 if __name__ == '__main__':
     start_time = time.time()
-    p1 = Process(target=f, args=('Bob',))
-    p2 = Process(target=f, args=('Alice',))
+    f('A')
+    f('B')
+    end_time = time.time()
+    print(end_time - start_time, '\n')
+
+    start_time = time.time()
+    p1 = Process(target=f, args=('A',))
+    p2 = Process(target=f, args=('B',))
     p1.start()
     p2.start()
     p1.join()
     p2.join()
     end_time = time.time()
-    print(end_time - start_time, '\n')
-
-    start_time = time.time()
-    f('Bob')
-    f('Alice')
-    end_time = time.time()
     print(end_time - start_time)