1.使用_thread创建线程
#!/usr/bin/python3import _thread
import time# 为线程定义一个函数
def print_time( threadName, delay):count = 0while count < 5:time.sleep(delay)count += 1print ("%s: %s" % ( threadName, time.ctime(time.time()) ))# 创建两个线程
try:_thread.start_new_thread( print_time, ("Thread-1", 2, ) )_thread.start_new_thread( print_time, ("Thread-2", 4, ) )
except:print ("Error: 无法启动线程")while 1:pass2.使用threading创建线程
# -*- coding: utf-8 -*-
"""
Spyder EditorThis is a temporary script file.
"""
# notepad运行不了，可以坐在spyder中运行。
import threading
import timeexitFlag = 0class myThread (threading.Thread):def __init__(self, threadID, name, counter):threading.Thread.__init__(self)self.threadID = threadIDself.name = nameself.counter = counterdef run(self):print ("开始线程：" + self.name)print_time(self.name, self.counter, 5)print ("退出线程：" + self.name)def print_time(threadName, delay, counter):while counter:if exitFlag:threadName.exit()time.sleep(delay)print ("%s: %s" % (threadName, time.ctime(time.time())))counter -= 1# 创建新线程
thread1 = myThread(1, "Thread-1", 1)
thread2 = myThread(2, "Thread-2", 2)# 开启新线程
thread1.start()
thread2.start()
thread1.join()
thread2.join()
print ("退出主线程")3.threading中线程同步
#!/usr/bin/python3import threading
import timeclass myThread (threading.Thread):def __init__(self, threadID, name, counter):threading.Thread.__init__(self)self.threadID = threadIDself.name = nameself.counter = counterdef run(self):print ("开启线程： " + self.name)# 获取锁，用于线程同步threadLock.acquire()print_time(self.name, self.counter, 3)# 释放锁，开启下一个线程threadLock.release()def print_time(threadName, delay, counter):while counter:time.sleep(delay)print ("%s: %s" % (threadName, time.ctime(time.time())))counter -= 1threadLock = threading.Lock()
threads = []# 创建新线程
thread1 = myThread(1, "Thread-1", 1)
thread2 = myThread(2, "Thread-2", 2)# 开启新线程
thread1.start()
thread2.start()# 添加线程到线程列表
threads.append(thread1)
threads.append(thread2)# 等待所有线程完成
for t in threads:t.join()
print ("退出主线程")4.线程优先级队列
#!/usr/bin/python3import queue
import threading
import timeexitFlag = 0class myThread (threading.Thread):def __init__(self, threadID, name, q):threading.Thread.__init__(self)self.threadID = threadIDself.name = nameself.q = qdef run(self):print ("开启线程：" + self.name)process_data(self.name, self.q)print ("退出线程：" + self.name)def process_data(threadName, q):while not exitFlag:queueLock.acquire()if not workQueue.empty():data = q.get()queueLock.release()print ("%s processing %s" % (threadName, data))else:queueLock.release()time.sleep(1)threadList = ["Thread-1", "Thread-2", "Thread-3"]
nameList = ["One", "Two", "Three", "Four", "Five"]
queueLock = threading.Lock()
workQueue = queue.Queue(10)
threads = []
threadID = 1# 创建新线程
for tName in threadList:thread = myThread(threadID, tName, workQueue)thread.start()threads.append(thread)threadID += 1# 填充队列
queueLock.acquire()
for word in nameList:workQueue.put(word)
queueLock.release()# 等待队列清空
while not workQueue.empty():pass# 通知线程是时候退出
exitFlag = 1# 等待所有线程完成
for t in threads:t.join()
print ("退出主线程")5.线程优先级队列2
import time
import threading
# 使用 threading 模块创建线程
import queue
#优先级队列模块
#线程优先级队列(Queue)
exitFlag = 0
class myThread (threading.Thread):def __init__(self, threadID, name, q):threading.Thread.__init__(self)self.threadID = threadIDself.name = nameself.q = qdef run(self):print ("开启线程：" + self.name)process_data(self.threadID,self.name, self.q)print ("退出线程：" + self.name)
def process_data(id,threadName, q):while not exitFlag:id += 1if id >= 4:data = q.get()print ("%s processing %s" % (threadName, data))time.sleep(1)
threadList = ["Thread-1", "Thread-2", "Thread-3"]
nameList = ["One", "Two", "Three", "Four", "Five"]
workQueue = queue.Queue(10)
threads = []
threadID = 1
# 填充队列
for word in nameList:workQueue.put(word)
# 创建新线程
for tName in threadList:thread = myThread(threadID, tName, workQueue)thread.start()threads.append(thread)threadID += 1
# 等待队列清空
while not workQueue.empty():pass
# 通知线程是时候退出
exitFlag = 1
# 等待所有线程完成
for t in threads:t.join()
print ("退出主线程")