python, string methods

Question

Possible Duplicate:
Pythonic way to insert every 2 elements in a string

I'll be happy if someone can help with python code)) How can I put the space into a string for example,

If there is the string 'akhfkahgdsds' I would like to turn it into 'ak hf ka hg ds ds'

So you want to add a space after every second character? What have you tried so far? — poke, Nov 09 '12 at 19:11

score 7 · Answer 1 · edited Nov 09 '12 at 19:48

7

>>> s = 'akhfkahgdsds'
>>> range(0, len(s), 2) # gives you the start indexes of your substrings
[0, 2, 4, 6, 8, 10]
>>> [s[i:i+2] for i in range(0, len(s), 2)] # gives you the substrings
['ak', 'hf', 'ka', 'hg', 'ds', 'ds']
>>> ' '.join(s[i:i+2] for i in range(0, len(s), 2)) # join the substrings with spaces between them
'ak hf ka hg ds ds'

edited Nov 09 '12 at 19:48

Xavier

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answered Nov 09 '12 at 19:13

Paolo Moretti

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actually, this command doesn't work, I'm using python 2.7.3 – Leo Nov 10 '12 at 18:07
@user1813163 I've tested it on Python 2.7 and 3.3. Are you sure you pasted it correctly? What error are you getting? – Paolo Moretti Nov 10 '12 at 18:23

score 0 · Answer 2 · answered Nov 09 '12 at 19:18

0

def isection(itr, size):
    while itr:
        yield itr[:size]
        itr = itr[size:]

' '.join(isection('akhfkahgdsds', 2))

answered Nov 09 '12 at 19:18

pydsigner

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score 0 · Answer 3 · answered Nov 09 '12 at 19:23

I don't really think this is the way to go here, but I think this answer is kind of fun anyway. If the length of the string is always even, you can play neat tricks with iter -- if it's odd, the last character will be truncated:

s = '11223344'
i_s = iter(s)
' '.join(x+next(i_s) for x in i_s)

Of course, you can always pad it:

i_s = iter(s+len(s)%2*' ')

score 0 · Answer 4 · answered Nov 09 '12 at 21:10

0

you can try this simple code:

try:
    for i in range(0,len(s)+1,2):
        print s[i]+s[i+1],
except IndexError:
    pass

answered Nov 09 '12 at 21:10

jkalivas

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python, string methods

4 Answers4