Joining python string from list by using .join function is not outputing wanted result

Question

EDIT: to clarify I changed list name for this question and I don't call it "list" in my code. It's called for what it represents, but that is not important in this topic.

I have the following list:

[['ab', 'cd', 'ef', 'gh', 'ij', 'kl'],
 ['ab', 'cd', 'ef', 'gh', 'ij', 'kl'],
 ['ab', 'cd', 'ef', 'gh', 'ij', 'kl'],
 ['ab', 'cd', 'ef', 'gh', 'ij', 'kl'],
 ['ab', 'cd', 'ef', 'gh', 'ij', 'kl'],
 ['ab', 'cd', 'ef', 'gh', 'ij', 'kl']]

and I need to connect them as:

ab:cd:ef:gh:ij:kl

Tried using for loop and join function:

for i in list:
        connect.append(':'.join(i))

But this gets me to:

a:b:c:d:e:f:g:h:i:j:k:l

Can anyone help me clarify what is wrong in my script?

list is an inbuilt function, you should give your variable a different name — Sayse
– Sayse, Commented Apr 12, 2019 at 8:12
works for me: >>> [":".join(x) for x in l] ['ab:cd:ef:gh:ij:kl', 'ab:cd:ef:gh:ij:kl', 'ab:cd:ef:gh:ij:kl', 'ab:cd:ef:gh:ij:kl', 'ab:cd:ef:gh:ij:kl', 'ab:cd:ef:gh:ij:kl'] — Netwave
– Netwave, Commented Apr 12, 2019 at 8:13

Netwave · Accepted Answer · 2019-04-12 08:14:20Z

1

Your code should work, anyway here you have a comprehension achieving the same:

>>> l = [['ab', 'cd', 'ef', 'gh', 'ij', 'kl'],
...  ['ab', 'cd', 'ef', 'gh', 'ij', 'kl'],
...  ['ab', 'cd', 'ef', 'gh', 'ij', 'kl'],
...  ['ab', 'cd', 'ef', 'gh', 'ij', 'kl'],
...  ['ab', 'cd', 'ef', 'gh', 'ij', 'kl'],
...  ['ab', 'cd', 'ef', 'gh', 'ij', 'kl']]
>>> [":".join(x) for x in l]
['ab:cd:ef:gh:ij:kl', 'ab:cd:ef:gh:ij:kl', 'ab:cd:ef:gh:ij:kl', 'ab:cd:ef:gh:ij:kl', 'ab:cd:ef:gh:ij:kl', 'ab:cd:ef:gh:ij:kl']

answered Apr 12, 2019 at 8:14

Netwave

43.2k6 gold badges69 silver badges111 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

Donaatas Over a year ago

There is no longer an issue. Thank you. I got that my solution was in fact correct, but I was passing wrong arguments which made to split string every single character. (I have 2 strings abcdefghijkl which I split to what's shown in the topic, but to join them I was using non split one). Beginners mistakes right..?

Collectives™ on Stack Overflow

Joining python string from list by using .join function is not outputing wanted result

1 Answer 1

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related