Parallel mapping functions in IPython w/ multiple parameters

Question

I\'m trying to use IPython\'s parallel environment and so far, it\'s looking great but I\'m running into a problem. Lets say that I have a function, defined in a library

<

Answer 1

let's build on that:

dview.map_sync(func, [myA]*len(myLongList), myLongList)

maybe the following would work:

from itertools import izip_longest
dview.map_sync(func, izip_longest(myLongList, [], fillvalue=myA))

example:

>>> # notice that a is a tuple
... concat = lambda a: '%s %s' % a
>>> mylonglist = range(10)
>>> from itertools import izip_longest
>>> map(concat, izip_longest(mylonglist, [], fillvalue='mississippi'))
['0 mississippi', '1 mississippi', '2 mississippi', '3 mississippi',
'4 mississippi', '5 mississippi', '6 mississippi', '7 mississippi',
'8 mississippi', '9 mississippi']