multiprocess passing arguments double asterisks

[pic8690 at gmail.com]

On Sunday, October 23, 2016 at 3:44:16 PM UTC-5, Thomas Nyberg wrote:
> On 10/23/2016 03:12 AM, pic8690 at gmail.com wrote:
> > import <span class="highlight" style="padding-left: 0px; padding-right: 0px;">multiprocess</span>ing as mp
> >
> > def bar(**kwargs):
> >    for a in kwargs:
> >       print a,kwargs[a]
> >
> > arguments={'name':'Joe','age':20}
> > p=mp.Pool(processes=4)
> > p.map(bar,**arguments)
> > p.close()
> > p.join()
> 
> What are you trying to do? The map method is similar to the map built-in:
> 
> 	https://docs.python.org/2/library/multiprocessing.html#multiprocessing.pool.multiprocessing.Pool.map
> 	https://docs.python.org/2/library/functions.html#map
> 
> map(function, iterable, ...)
> Apply function to every item of iterable and return a list of the results...
> 
> You can't apply it to keyword arguments like this. There are some 
> different SO threads talking about this sort of thing:
> 
> 	http://stackoverflow.com/questions/13499824/using-python-map-function-with-keyword-arguments
> 	http://stackoverflow.com/questions/10212445/python-map-list-item-to-function-with-arguments
> 	http://stackoverflow.com/questions/16874244/python-map-and-arguments-unpacking
> 
> Maybe those (especially the last one) are helpful.
> 
> Cheers,
> Thomas
Thanks for the reply.

The code snippet given by Peter is not very clear

I would like to multiprocess a function which is written in python of the form bar(**kwargs) which returns a value.  This example does not return anything

Would you please use my example for the map function?

I appreciate your help,