我知道在这种情况下，全局变量并不总是处理事情的最佳方式，它们对我正在做的事情很好。我不会做繁重的读/写，主要是读。
alive = {'subAlive': True, 'testAlive': True};
def sub_listener(conn): #listens for kill from main
global alive
while True:
data = conn.recv()
if data == "kill":
alive['subAlive'] = False; #value for kill
break
def subprocess(conn, threadNum):
t = Thread(target=sub_listener, args=(conn,))
count = 0
threadVal = threadNum
t.start()
run = alive[subAlive];
while run:
print "Thread %d Run number = %d" % (threadVal, count)
count = count + 1
sub_parent, sub_child = Pipe()
runNum = int(raw_input("Enter a number: "))
threadNum = int(raw_input("Enter number of threads: "))
print "Starting threads"
for i in range(threadNum):
p = Process(target=subprocess, args=(sub_child, i))
p.start()
print "Starting run"
time.sleep(runNum)
print "Terminating Subprocess run"
for i in range(threadNum):
sub_parent.send("kill") #sends kill to listener
p.join()
我收到这个错误
NameError: global name 'testAlive' is not defined
Traceback (most recent call last):
File "/usr/lib/python2.7/multiprocessing/process.py", line 258, in _bootstrap
self.run()
File "/usr/lib/python2.7/multiprocessing/process.py", line 114, in run
self._target(*self._args, **self._kwargs)
File "multiprocessDemo.py", line 38, in subprocess
run = alive[subAlive];
NameError: global name 'subAlive' is not defined
我尝试了几种不同的方式访问字典，但我似乎无法在谷歌上找出问题所在。如果我使用单独的变量，它确实有效，但不会很好地动态扩展。