Python线程锁打印空行
我现在正在学习。由于每个线程的输出将指向相同的目标,无论是数据库还是写入平面文件,我假设在每个线程的输出过程之前和之后使用Lock.acquire和Lock.releasePython线程锁打印空行,python,eclipse,multithreading,Python,Eclipse,Multithreading,我现在正在学习。由于每个线程的输出将指向相同的目标,无论是数据库还是写入平面文件,我假设在每个线程的输出过程之前和之后使用Lock.acquire和Lock.release from threading import Thread, Lock import time def task(argument1, lock): lock.acquire() print 'processing ' + str(argument1) lock.release() time
from threading import Thread, Lock
import time
def task(argument1, lock):
lock.acquire()
print 'processing ' + str(argument1)
lock.release()
time.sleep(5)
# Your baby code goes here
lock.acquire()
print 'finish processing' + str(argument1)
lock.release()
class Worker(Thread):
def __init__(self, argument1, lock):
Thread.__init__(self)
self.value = argument1
self.lock = lock
def run(self):
task(self.value, self.lock) # calling the routine
def main():
l = Lock()
worker1 = Worker('BAV99', l)
worker2 = Worker('ATMEGA328', l)
worker3 = Worker('LM340', l)
worker1.start()
worker2.start()
worker3.start()
if __name__ == '__main__':
你可能会被锁的用法弄糊涂。一句话,如果没有锁,你可能会把指纹摊开
无锁:
processing BAV99
processing ATMEGA328
processing LM340
finish processingBAV99finish processingLM340finish processingATMEGA328
带锁:
processing BAV99
processing ATMEGA328
processing LM340
finish processingBAV99
finish processingLM340
finish processingATMEGA328
问题是:
我发现,有时在下面这样的输出之间存在空行,我想知道那里到底发生了什么,或者这只是日食造成的幻觉。
processing BAV99
processing ATMEGA328
processing LM340
finish processingBAV99
finish processingLM340
finish processingATMEGA328
很抱歉,这个错误无法重复,这是最困扰我的