Print a word in parts python

Question

Hello I want to make a function that will use enhance(which just changes the word already made it) and print the new word in parts of a given number n. Example for S=test I should get (‘##t’, ‘#te’, ‘tes’, ‘est’, ‘st%’, ‘t%%’)

def enhance(S,n):
    S = "#"*(n-1)+S+"%"*(n-1)
    return S

def exploder(S,n):
    S = enhance(S,n)
    x=0
    for i in range (n <= len(S)):
        print(S[x:i])
        x=x+1


S="test"
n = 3
for n in range (0,n):
    print(exploder(S,n))
    n=n+1
print(exploder(S,n))

Looks similar to: http://stackoverflow.com/questions/8408117/generate-a-list-of-strings-with-a-sliding-window-using-itertools-yield-and-ite — Guy s, Mar 16 '17 at 12:53

Raymond Hettinger · Answer 1 · 2017-03-15T09:38:14.530

2

One immediate fix. Instead of:

  for i in range (n <= len(S)):

I think you want:

  for i in range(n, len(S) + 1):

That will give you values of i in the range n <= i < len(s).

Also, as Alex Hall suggested, change:

print(exploder(S,n))

To just:

exploder(S,n)

The exploder function was returning None. So that print is the source your spurious None outputs.

edited Mar 15 '17 at 09:38

answered Mar 15 '17 at 09:19

Raymond Hettinger

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This works but I get one more None print. Sorry I am new to python – Alex Mar 15 '17 at 09:25
1

@Alex just call `exploder`, don't `print` it, since you're printing what it returns which is nothing. `exploder` does the printing on its own. – Alex Hall Mar 15 '17 at 09:28
@Alex correctly identified the second problem with the code. The ``print(exploder(S,n))`` is where the ``None`` outputs were coming from. – Raymond Hettinger Mar 15 '17 at 09:31

Alex Hall · Answer 2 · 2017-03-15T09:26:48.563

1

def enhance(S, n):
    S = "#" * (n - 1) + S + "%" * (n - 1)
    return S

def exploder(S, n):
    S = enhance(S, n)
    for i in range(len(S)-n+1):
        print(S[i:i+n])

S = "test"
n = 3
exploder(S, n)

Output:

##t
#te
tes
est
st%
t%%

edited Mar 15 '17 at 09:26

answered Mar 15 '17 at 09:19

Alex Hall

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But this way I dont get a t%% print the last one. – Alex Mar 15 '17 at 09:25
@Alex oops, didn't notice. You just have to add one to the range of `i`, as I've [edited](http://stackoverflow.com/posts/42805509/revisions). – Alex Hall Mar 15 '17 at 09:27

Print a word in parts python

2 Answers2