Python opening multiple thread of matlab

[tsjuan]

Hello Python Users,

I've been trying to run multiple thread of Matlab by calling its com
object
via python. However, I keep getting error message that says Python
can't
find the attribute of certain function that I want to execute in
Matlab.

I know the com function is exist, it works just fine if I don't run
within thread.
Below is my sample code, any helps or comments are appreciated.

Thanks,
Tanto

import threading
from win32com.client import Dispatch

class MyThread ( threading.Thread ):

def __init__(self,matlab_command):
self.matlab_command = matlab_command
self.matlab_object = Dispatch('matlab.application.single')
threading.Thread.__init__(self)

def run(self):
execute = getattr(self.matlab_object,'Execute')
execute(self.matlab_command)

def awesome_dud(self):
execute = getattr(self.matlab_object,'Execute')
execute(self.matlab_command)

a = MyThread('a=1:1:100')
b = MyThread('b=1:1:200')

# Running matlab function through thread (It's not working)
# =========================================================

a.start()
b.start()
a.join()
b.join()

# Running matlab function not through thread (it's working)
# =========================================================
a.awesome_dud()
b.awesome_dud()

[Stefan Schukat]

Hello,

you just forgot to initialize the COM runtime for the separate thread.
try following:

def __init__(self,matlab_command):
self.matlab_command = matlab_command

threading.Thread.__init__(self)

def run(self):
import pythoncom
pythoncom.CoInitialize()
try:
matlab_object = Dispatch('matlab.application.single')
execute = getattr(matlab_object,'Execute')
execute(self.matlab_command)
finally:
matlab_object = None
pythoncom.CoUnitialize()

Stefan

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