multiprocess

Author: CoderHuo

mytest.py

@@ -53,6 +53,9 @@ def delete(list):
 
 
 class A:
+    def __init__(self):
+        print('A__init__')
+
     def serve_forever(self):
         self.A()
 
@@ -61,15 +64,22 @@ def A(self):
 
 
 class B(A):
-    pass
+    def __init__(self):
+        print('B__init__ run')
 
 
 class C:
+    def __init__(self):
+        print('C__init__ run')
+
     def A(self):
         print('CCC')
 
 
 class D(C, B):
+    def __init__(self):
+        C.__init__(self)
+        B.__init__(self)
     pass
 
 

studyLib/process_thread/multi_thread.py

@@ -2,6 +2,7 @@
 # -*- coding: utf-8 -*-
 
 from threading import Thread
+import multiprocessing
 import time
 
 __author__ = 'Mr.Huo'
@@ -15,6 +16,7 @@ def counter():
 
 
 def main():
+    # GIL的存在，多线程并不能正真的实现并发
     thread_array = {}
     start_time = time.time()
     for tid in range(2):
@@ -28,6 +30,16 @@ def main():
     end_time = time.time()
     print("Total time: {}".format(end_time - start_time))
 
+    # 多进程
+    mp = multiprocessing.Pool()
+    mp_start = time.time()
+    for i in range(2):
+        mp.apply_async(counter)
+    mp.close()
+    mp.join()
+    mp_end = time.time()
+    print("Total time: {}".format(mp_end - mp_start))
+
 
 if __name__ == '__main__':
     main()