TypeError: cannot pickle '_thread.lock' object

[usr1smcpl]

Hi,

I tried to upgrade the python package and run v0.5, but again it's showing the following error:

TypeError Traceback (most recent call last)
in
10 # Stream option chain data in real-time
11 StreamData = OptionStream.create_option_chain()
---> 12 for data in StreamData:
13 print(data)

~\anaconda3\lib\site-packages\optionchain_stream\option_chain.py in create_option_chain(self)
30 self.socketClient = WebsocketClient(self.api_key, self.api_secret, self.request_token, self.symbol, self.expiry)
31 # create streaming websocket data
---> 32 self.socketClient.queue_callBacks()
33 # Keep fetching streaming Queue
34 while 1:

~\anaconda3\lib\site-packages\optionchain_stream\websocket.py in queue_callBacks(self)
92 """
93 # Process to keep updating real time tick to DB
---> 94 Process(target=self.assign_callBacks,).start()
95 # Delay to let intial instrument DB sync
96 # For option chain to fetch value

~\anaconda3\lib\multiprocessing\process.py in start(self)
119 'daemonic processes are not allowed to have children'
120 _cleanup()
--> 121 self._popen = self._Popen(self)
122 self._sentinel = self._popen.sentinel
123 # Avoid a refcycle if the target function holds an indirect

~\anaconda3\lib\multiprocessing\context.py in _Popen(process_obj)
222 @staticmethod
223 def _Popen(process_obj):
--> 224 return _default_context.get_context().Process._Popen(process_obj)
225
226 class DefaultContext(BaseContext):

~\anaconda3\lib\multiprocessing\context.py in _Popen(process_obj)
325 def _Popen(process_obj):
326 from .popen_spawn_win32 import Popen
--> 327 return Popen(process_obj)
328
329 class SpawnContext(BaseContext):

~\anaconda3\lib\multiprocessing\popen_spawn_win32.py in init(self, process_obj)
91 try:
92 reduction.dump(prep_data, to_child)
---> 93 reduction.dump(process_obj, to_child)
94 finally:
95 set_spawning_popen(None)

~\anaconda3\lib\multiprocessing\reduction.py in dump(obj, file, protocol)
58 def dump(obj, file, protocol=None):
59 '''Replacement for pickle.dump() using ForkingPickler.'''
---> 60 ForkingPickler(file, protocol).dump(obj)
61
62 #

TypeError: cannot pickle '_thread.lock' object

Kindly let us know what could be the issue?

Thanks in advance

[ranjanrak]

I'm not able to reproduce the above pickle issue in my below setup:

O.S="Ubuntu"
O.S VERSION="18.04.3 LTS (Bionic Beaver)"
Python 3.6.9

Can you let me know your OS and Python version details?

[usr1smcpl]

The OS is Windows 10
Python is Python 3.8.5

[sriraj1122]

Yes. We are facing the same issue too.

[sriraj1122]

But we actually fixed the issue in Windows. Let us know if you want the code.

[usr1smcpl]

@sriraj1122 definitely kindly provide the code.
Many thanks in advance. Regards

[ranjanrak]

@sriraj1122
I wasn't able to check this on Window O.S.
Can you create PR for this? Will help others as well.
Thanks

[usr1smcpl]

@sriraj1122 is it possible to share the code that works on windows/address the pickle'thread' issue? Thanks

[mohitgupta1918]

But we actually fixed the issue in Windows. Let us know if you want the code.

would be helpful if you could post the code here or create a PR.

[revanthgss]

@ranjanrak It seems the issue is still present. I have tried in macos.

[njLabs]

you need to remove the volume key from the below code in on_ticks.
optionData = {'token':tick['instrument_token'], 'symbol':contract_detail['symbol'],
'last_price':tick['last_price'], 'change':tick['change'],
'oi':tick['oi']}