Thanks. :-/

Description need fixing.

See the description change in this comment, author mistakenly placed the missing qr in the wrong step

It should be:

After step 1, 2, 3:  
  s = cozylumxmoxgivesxsmartsquidwhoasksforjobpenx

After step 4:  
  s = co zy lu mx mo xg iv es xs ma rt sq ui dw ho as ks fo ri ob pe nx  

After step 5:  
  ciphertext pairs = dn wf rl im es gq et mo mq ef iu ks tr gv ds fo nk as er kd ai qr

After step 6:    
  ciphered text = dnwf rlimes gqetm omqef iukst rgv dsfo nka ser kda iqr 

Step 4: Break the given plaintext into pairs.

After Steps 1, 2, and 3:
s = cozylumxmoxgivesxsmartsquidwhoasksforjobpenx

After Step 4:
s = co zy lu mx mo xg iv es xs ma rt sq ui dw ho as ks fo ri ob pe nx qr

Where did the last qr come from?

Very funny...

I guess this can be closed.

the error comes from your code, and the output panel gives you enough information to find out what's wrong.

If I just disregard the spaghetti code given to us, I'm able to solve it :)

Python: All unnecessary comments should be removed from the full test suite.

fixed in latest fork.

It is now :]

Remember: if J comes before I in the key, then it's J that goes into the matrix rather than I, in short whoever comes first goes into matrix but will be used as both i and j

sadly, ranks cannot be changed

This kata level have to be 5 kyu!

men i love using lambda ;)

What happened to the rest of this series? :(