Removing consecutive duplicates in a tuple

Question

I am trying to not print consecutive duplicates with a zip list but I am a little confused about the tuple structure here. If it were a simple list I would either use groupby or something simple like if y[i] != y[i-1] but this does not work here. I also can't seem to append it to a list which I tried... I am missing something in the details here.

and example input would be:

aa b aa aa b c

which would give me:

aa b aa b c

here is my code so far:

from __future__ import print_function
import sys

in_file = sys.argv[1]

with open(in_file) as f:
    do stuff not related to this question...

for x in zip(*lis):
    for y in x :
        if y[i] != y[i-1]:
            print(y+' ', end='')
    print('\n')

Sorry if this question is confusing, feel free to make any changes to help others :-)

@cᴏʟᴅsᴘᴇᴇᴅ, I thought so too but I can not figure it out, like I said I am missing something silly here. — badner, Jul 31 '17 at 00:25
I guess you can split it by white space and then remove dupes with your method. — Psidom, Jul 31 '17 at 00:25
I marked as a dupe because I don't see how the problem solution will be any different than the dupe - being a string or tuple initially won't change much. — miradulo, Jul 31 '17 at 00:27
@badner `' '.join(k for k, _ in itertools.groupby('aa b aa aa b c'.split()))` — cs95, Jul 31 '17 at 00:27

Mohideen bin Mohammed · Accepted Answer · 2017-07-31T00:42:15.423

1

try this,

from itertools import groupby
a = "aa b aa aa b c"
q = tuple(a.split()) #here q is tuple 
''.join([x for x,y in groupby(q)]) # use your tuple inside groupby

edited Jul 31 '17 at 00:42

answered Jul 31 '17 at 00:26

Mohideen bin Mohammed

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You don't need the if condition. – cs95 Jul 31 '17 at 00:27
yes you're correct.. updated thanks – Mohideen bin Mohammed Jul 31 '17 at 00:28
see that is what I tried but I am still getting a tuple error: – badner Jul 31 '17 at 00:37
print(''.join([k for k,y in groupby(x.split())])) AttributeError: 'tuple' object has no attribute 'split' – badner Jul 31 '17 at 00:37
i used split because i am having string.. if you want you can use it directly. BTW i will change my answer check it – Mohideen bin Mohammed Jul 31 '17 at 00:41
ok I will try it – badner Jul 31 '17 at 00:52
@MohideenibnMohammed perfect! – badner Jul 31 '17 at 00:59

Removing consecutive duplicates in a tuple

1 Answers1