Why am I getting AttributeError: Object has no attribute? [closed]

Question

I have a class MyThread. In that, I have a method sample. I am trying to run it from within the same object context. Please have a look at the code:

class myThread (threading.Thread):     def __init__(self, threadID, name, counter, redisOpsObj):         threading.Thread.__init__(self)         self.threadID = threadID         self.name = name         self.counter = counter         self.redisOpsObj = redisOpsObj              def stop(self):         self.kill_received = True                  def sample(self):         print "Hello"                      def run(self):         time.sleep(0.1)         print "\n Starting " + self.name         self.sample() 

Looks very simple ain't it. But when I run it I get this error

AttributeError: 'myThread' object has no attribute 'sample' Now I have that method, right there. So what's wrong? Please help

Edit: This is the stack trace

Starting Thread-0  Starting Thread-1 Exception in thread Thread-0: Traceback (most recent call last): File "/usr/lib/python2.6/threading.py", line 525, in __bootstrap_inner self.run() File "./redisQueueProcessor.py", line 51, in run self.sample() AttributeError: 'myThread' object has no attribute 'sample'  Exception in thread Thread-1: Traceback (most recent call last): File "/usr/lib/python2.6/threading.py", line 525, in __bootstrap_inner self.run() File "./redisQueueProcessor.py", line 51, in run self.sample() AttributeError: 'myThread' object has no attribute 'sample' 

I am calling it like this

arThreads = [] maxThreads = 2;  for i in range( maxThreads ):     redisOpsObj = redisOps()     arThreads.append( myThread(i, "Thread-"+str(i), 10, redisOpsObj) ) 

Sorry, I can't post the redisOps class code. But I can assure you that it works just fine

Answer 1

Your indentation is goofed, and you've mixed tabs and spaces. Run the script with python -tt to verify.

Answer 2

If you’re using python 3+ this may also occur if you’re using private variables that start with double underscore, e.g., self.__yourvariable. Just something to take note of for some of you who may run into this issue.