different ways of handling a filtered list comprehension

timed.py

import timeit

## http://stackoverflow.com/questions/21538689/python-are-there-other-ways-to-apply-a-function-and-filter-in-a-list-comprehen


words = [ 'one','two','three','',' four','five ','six','seven','eight ',' nine','ten','']

def comprehension_double_strip():
    _words = [ w.strip() for w in words if w.strip() ]

def comprehension_two_lists():
    _words = [ w.strip() for w in words ]
    _words = [ w for w in _words if w ]

def comprehension_inner_list():
    ## [(x, y) for x in range(1, 5) for y in range(0, x)]
    _words = [ i for i in [ w.strip() for w in words ] if i ]

def comprehension_generator():
    _words = [ i for i in ( w.strip() for w in words ) if i ]

def comprehension_filter():
    cleaned = filter(None, map(str.strip, words))

def comprehension_map():
    cleaned = [i for i in map(str.strip, words) if i]

def templist():
	cleaned = [stripped for word in words
			   for stripped in [word.strip()]
			   if stripped]

iterations = 10000

time_a = timeit.timeit('comprehension_double_strip()','from __main__ import comprehension_double_strip , words', number=iterations)
time_b = timeit.timeit('comprehension_two_lists()','from __main__ import comprehension_two_lists , words', number=iterations)
time_c = timeit.timeit('comprehension_inner_list()','from __main__ import comprehension_inner_list , words', number=iterations)
time_d = timeit.timeit('comprehension_generator()','from __main__ import comprehension_generator , words', number=iterations)
time_e = timeit.timeit('comprehension_filter()','from __main__ import comprehension_filter , words', number=iterations)
time_f = timeit.timeit('comprehension_map()','from __main__ import comprehension_map , words', number=iterations)
time_g = timeit.timeit('templist()','from __main__ import templist , words', number=iterations)


print "comprehension_double_strip- %s" % time_a
print "comprehension_two_lists   - %s" % time_b
print "comprehension_inner_list  - %s" % time_c
print "comprehension_generator   - %s" % time_d
print "comprehension_filter      - %s" % time_e
print "comprehension_map         - %s" % time_f
print "templist                  - %s" % time_g