In [2]:

    

def list_of_chars(chars):
    if not chars:
        return chars
    length = len(chars)
    for i in range(length/2):
        chars[i], chars[length - (i+1)] = chars[length - (i+1)], chars[i]
    return chars

def list_of_chars1(chars):
    if not chars:
        return chars
    chars = list(chars)
    return [chars[i] for i in range(len(chars)-1, -1, -1)]

def list_of_chars4(list_chars):
    if not list_chars:
        return list_chars
    rchars = []
    i = len(list_chars) - 1
    while i > -1:
        rchars.append(list_chars[i])
        i -= 1
    return rchars

def list_of_chars2(chars):
    return chars[::-1]

def list_of_chars3(chars):
    if not chars:
        return chars
    return list(reversed(chars))


    

In [3]:

    

a = list("soyle dim tam")
print str(list_of_chars(a))


    

    




['m', 'a', 't', ' ', 'm', 'i', 'd', ' ', 'e', 'l', 'y', 'o', 's']

In [95]:

    

from nose.tools import assert_equal

assert_equal(list_of_chars(None), None)
assert_equal(list_of_chars(['']), [''])
assert_equal(list_of_chars(
    ['f', 'o', 'o', ' ', 'b', 'a', 'r']),
    ['r', 'a', 'b', ' ', 'o', 'o', 'f'])
print('Success: test_reverse')


    

    




Success: test_reverse

In [7]:

    

a = "ferferf"


    

In [8]:

    

print a


    

    




ferferf

In [ ]: