Python-сообщество

def test(text):
    res = ''
    count = 0;
    for t in text:             
        res += text[1 + count] + text[0 + count]
        count += 2 
    return res  
 

def test(text):
    res = ''
    count = 0;
    for t in text:
        try:             
            res += text[1 + count] + text[0 + count]
            count += 2
        except IndexError:
            pass
    return res  

def test1(text):
    return ''.join([x + y for x, y in zip(text[1::2], text[::2])])
 
def test2(text):
    res = []
    for i in range(0, len(text) - 1, 2):
        res.append(text[i + 1] + text[i])
    return ''.join(res)
 
def test3(text):
    return ''.join([text[i + 1] + text[i] 
                    for i in range(0, len(text) - 1, 2)])

def shuffle_str(text):
    res = ''
    for t in range(0,len(text),2):
        res += text[1 + t] + text[0 + t]
    return res

from array import array
def swap(txt):
    arr=array('H', txt)
    arr.byteswap()
    return a.tostring()