output t2

$ python teste.py 
Exception in thread Thread-2:
Traceback (most recent call last):
  File "/usr/lib/python2.7/threading.py", line 551, in __bootstrap_inner
    self.run()
  File "/usr/lib/python2.7/threading.py", line 504, in run
    self.__target(*self.__args, **self.__kwargs)
  File "/usr/lib/python2.7/multiprocessing/pool.py", line 319, in _handle_tasks
    put(task)
PicklingError: Can't pickle <type 'function'>: attribute lookup __builtin__.function failed

^\Quit (core dumped)

output_t1

$ python teste.py 
990
991
992
993
994
995
996
997
998
[990, 991, 992, 993, 994, 995, 996, 997, 998]
(1, 990)
(2, 991)
(3, 992)
(4, 993)
(5, 994)
(6, 995)
(7, 996)
(8, 997)
(9, 998)
[(1, 990), (2, 991), (3, 992), (4, 993), (5, 994), (6, 995), (7, 996), (8, 997), (9, 998)]
(1, 990, 'foobar')
(2, 991, 'foobar')
(3, 992, 'foobar')
(4, 993, 'foobar')
(5, 994, 'foobar')
(6, 995, 'foobar')
(7, 996, 'foobar')
(8, 997, 'foobar')
(9, 998, 'foobar')
[(1, 990, 'foobar'), (2, 991, 'foobar'), (3, 992, 'foobar'), (4, 993, 'foobar'), (5, 994, 'foobar'), (6, 995, 'foobar'), (7, 996, 'foobar'), (8, 997, 'foobar'), (9, 998, 'foobar')]

test1.py

# coding: utf-8

from multiprocessing import *

a = 'foobar'

def f(args):
    print args
    return args

def f2(args):
    print args+(a,)
    return args+(a,)

x = range(990,999)

p = Pool(2)

print p.map(f,x)

p = Pool(2)

print p.map(f,enumerate(x,1))

p = Pool(2)

print p.map(f2,enumerate(x,1))

test2.py

# coding: utf-8

from multiprocessing import *

class T2:
    def __init__(self):

        a = 'foobar'

        def f(args):
            print args
            return args

        def f2(args):
            print args+(a,)
            return args+(a,)

        x = range(990,999)

        p = Pool(2)

        print p.map(f,x)

        p = Pool(2)

        print p.map(f,enumerate(x,1))

        p = Pool(2)

        print p.map(f2,enumerate(x,1))


T2()