python 这样写多线程对吗

多线程供你参考
import threading
import time

exitFlag = 0

class myThread (threading.Thread):
def __init__(self, threadID, name, counter):
threading.Thread.__init__(self)
self.threadID = threadID
self.name = name
self.counter = counter
def run(self):
print "Starting " + self.name
print_time(self.name, 5, self.counter)
print "Exiting " + self.name

def print_time(threadName, counter, delay):
while counter:
if exitFlag:
threadName.exit()
time.sleep(delay)
print "%s: %s" % (threadName, time.ctime(time.time()))
counter -= 1

# Create new threads
thread1 = myThread(1, "Thread-1", 1)
thread2 = myThread(2, "Thread-2", 2)

# Start new Threads
thread1.start()
thread2.start()

print "Exiting Main Thread"

抛开gil的问题 你这个是单线程的 当然和没有用线程写法一样
但是如果你想要的是并发的话 不仅需要多进程 而且你也不能把open函数写在执行体里 各个并发部分会重复创建覆盖这个文件的..