Updating variables in Multi-processing

[WiPi]

Hi guys,

I'm struggling to get the correct code configuration to update an integer variable across multi-process processes!

My code in brief is below:

import multiprocessing
from multiprocessing import Value

error_value = Value('i',0)  #assign as integer type

def get_data(url):
    try:
        ...code doing some stuff here

    except ValueError as e:
       #if error thrown up simply count it
        error_value.acquire()
        error_value.value += 1
        error_value.release()
        pass 


if __name__ == '__main__':

# ---- Perform multi-processing 
    p = multiprocessing.Pool(6)
    results = p.map(get_data,'argslist')
    p.close()
    p.join()

    print(str(error_value.value))

So in the first instance I just want to count the number of errors thrown up in the function.

The output in the final print statement is zero but I know this not to be the case.

Any ideas please?