committed from zkp

pythonkd · pythonkd · commit 1144f10f4e6a · 2019-03-03T12:38:41.000+08:00
diff --git a/多线程_多进程/17.py b/多线程_多进程/17.py
@@ -0,0 +1,22 @@
+import time, threading
+def loop1():
+    print("loop1 start{}".format(time.ctime()))
+    time.sleep(4)
+    print("loop1 end {}".format(time.ctime()))
+def loop2():
+    print("loop2 start{}".format(time.ctime()))
+    time.sleep(2)
+    print("loop2 end {}".format(time.ctime()))
+
+def main():
+    start = time.time()
+    print("**"*10)
+    t1 = threading.Thread(target=loop1, args=())
+    t1.start()
+    t2 = threading.Thread(target=loop2, args=())
+    t2.start()
+    t1.join()
+    t2.join()
+    end = time.time()
+    print("程序共用了{}".format(end - start))
+main()
diff --git a/多线程_多进程/18.py b/多线程_多进程/18.py
@@ -0,0 +1,23 @@
+import time, threading
+def loop1():
+    print("loop1 start{}".format(time.ctime()))
+    time.sleep(4)
+    print("loop1 end {}".format(time.ctime()))
+def loop2():
+    print("loop2 start{}".format(time.ctime()))
+    time.sleep(2)
+    print("loop2 end {}".format(time.ctime()))
+
+def main():
+    start = time.time()
+    print("**"*10)
+    t1 = threading.Thread(target=loop1, args=())
+    t1.setDaemon(True)
+    t1.start()
+    t2 = threading.Thread(target=loop2, args=())
+    t2.start()
+    # t1.join()
+    # t2.join()
+    end = time.time()
+    print("程序共用了{}".format(end - start))
+main()
diff --git a/多线程_多进程/19.py b/多线程_多进程/19.py
@@ -0,0 +1,15 @@
+import threading, time
+
+class SayHi(threading.Thread):
+    def __init__(self,name):
+        super(SayHi, self).__init__()
+        self.name = name
+
+    def run(self):
+        time.sleep(2)
+        print("{} say hello".format(self.name))
+
+if __name__ == '__main__':
+    t = SayHi("lili")
+    t.start()
+    print("主线程")
diff --git a/多线程_多进程/20.py b/多线程_多进程/20.py
@@ -0,0 +1,21 @@
+import threading
+Sum = 0
+loopsum = 1000000
+def add():
+    global Sum, loopsum
+    for i in range(loopsum):
+        Sum += 1
+
+def minu():
+    global Sum , loopsum
+    for i in range(loopsum):
+        Sum -= 1
+if __name__ == "__main__":
+    print('start sum={}'.format(Sum))
+    t1 = threading.Thread(target=add, args=())
+    t2 = threading.Thread(target=minu, args=())
+    t1.start()
+    t2.start()
+    t1.join()
+    t2.join()
+    print(Sum)
diff --git a/多线程_多进程/21.py b/多线程_多进程/21.py
@@ -0,0 +1,12 @@
+import multiprocessing
+from time import sleep, ctime
+
+def clock(interval):
+    while True:
+        print("The time is %s" % ctime())
+        sleep(interval)
+
+if __name__ == '__main__':
+    p = multiprocessing.Process(target=clock, args=(5,))
+    p.start()
+    
diff --git a/多线程_多进程/22.py b/多线程_多进程/22.py
@@ -0,0 +1,17 @@
+import multiprocessing
+import time
+
+class Clockprocess(multiprocessing.Process):
+
+    def __init__(self, interval):
+        self.interval = interval
+        super(Clockprocess, self).__init__()
+
+    def run(self):
+        while True:
+            print("The time is {}".format(time.ctime()))
+            time.sleep(self.interval)
+
+if __name__ == '__main__':
+    p = Clockprocess(5)
+    p.start()
