Python线程数参数E

Question

我在一个线程中执行一个命令差不多有25k次

if threaded is True:
                thread = Thread(target=threadedCommand, args=(cmd))
                thread.start()
                thread.join()  

def threadedCommand(command):
    if command is None:
        print 'can\'t execute threaded command'
        sys.exit(-1)
    print 'executing - %s'%(command)
    os.system(command)  

命令就像

^{pr2}$

我看到的是

Traceback (most recent call last): File "/usr/lib64/python2.6/threading.py", line 525, in __bootstrap_inner self.run() File "/usr/lib64/python2.6/threading.py", line 477, in run self.__target(*self.__args, **self.__kwargs) TypeError: threadedCommand() takes exactly 1 argument (52 given)

^CException in thread Thread-9377: Traceback (most recent call last): File "/usr/lib64/python2.6/threading.py", line 525, in __bootstrap_inner self.run() File "/usr/lib64/python2.6/threading.py", line 477, in run self.__target(*self.__args, **self.__kwargs) TypeError: threadedCommand() takes exactly 1 argument (56 given)

Answer 1

args必须是元组。(cmd)与cmd相同；您需要一个单元素元组：

thread = Thread(target=threadedCommand, args=(cmd,))
#                                                ^