deepcopy of class inherited from Thread

VYAS ASHISH M-NTB837 ashish.vyas at motorola.com
Mon Oct 12 14:39:37 CEST 2009


Dear All
 
I am running this piece of code:
 
from threading import Thread
import copy
 
class Ashish(Thread):
    def __init__(self, i):
        Thread.__init__(self)
        self.foo = i
    def run(self):
        print (self, self.foo)
 

d= Ashish(4)
e = copy.deepcopy(d)  <--- Exception here....
 
d.start()
e.start()
 
d.join()
e.join()
 
But I am getting this error:
 
>>> 
Traceback (most recent call last):
  File "D:\Profiles\ntb837\Desktop\threadprob.py", line 13, in <module>
    e = copy.deepcopy(d)
  File "C:\Python31\lib\copy.py", line 173, in deepcopy
    y = _reconstruct(x, rv, 1, memo)
  File "C:\Python31\lib\copy.py", line 295, in _reconstruct
    state = deepcopy(state, memo)
  File "C:\Python31\lib\copy.py", line 146, in deepcopy
    y = copier(x, memo)
  File "C:\Python31\lib\copy.py", line 235, in _deepcopy_dict
    y[deepcopy(key, memo)] = deepcopy(value, memo)
  File "C:\Python31\lib\copy.py", line 173, in deepcopy
    y = _reconstruct(x, rv, 1, memo)
  File "C:\Python31\lib\copy.py", line 295, in _reconstruct
    state = deepcopy(state, memo)
  File "C:\Python31\lib\copy.py", line 146, in deepcopy
    y = copier(x, memo)
  File "C:\Python31\lib\copy.py", line 235, in _deepcopy_dict
    y[deepcopy(key, memo)] = deepcopy(value, memo)
  File "C:\Python31\lib\copy.py", line 173, in deepcopy
    y = _reconstruct(x, rv, 1, memo)
  File "C:\Python31\lib\copy.py", line 280, in _reconstruct
    y = callable(*args)
  File "C:\Python31\lib\copyreg.py", line 88, in __newobj__
    return cls.__new__(cls, *args)
TypeError: object.__new__(_thread.lock) is not safe, use
_thread.lock.__new__()
 
 
Could someone please help me find a solution?
 
Regards,
Ashish Vyas
 
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