Examples of map() built-in that follow the official python documentation at http://docs.python.org/2/library/functions.html#map

map_example.py

# map(function, iterable, ...)
#
# http://docs.python.org/2/library/functions.html#map


nums = range(5)
extended_nums = range(10)

double = lambda x: x*2
concat = lambda x,y: "{x}{y}".format(x=x, y=y)

print '\nApply function to every item of iterable and return a list of the results.'
print map(double, nums)

print '\nIf additional iterable arguments are passed, function must take that many arguments and is applied to the items from all iterables in parallel.'
print map(concat, nums, nums)

print '\nIf one iterable is shorter than another it is assumed to be extended with None items.'
print map(concat, nums, extended_nums)

print '\nIf function is None, the identity function is assumed;'
print map(None, nums)

print '\nif there are multiple arguments, map() returns a list consisting of tuples containing the corresponding items from all iterables (a kind of transpose operation).'
print map(None, nums, extended_nums)

print '\nThe iterable arguments may be a sequence or any iterable object; the result is always a list.'
print map(None, range(3)) == map(None, xrange(3)) == map(None, (0,1,2)) == [0, 1, 2]