I learnt a lot in this cool kata. Thanks :D

Thank you.

Hi, I complete this kata(https://www.codewars.com/kata/551dd1f424b7a4cdae0001f0). It showed both in my completed and unfinished kata list.
Could it be removed from the unfinished list and stay on the completed one?

This is a very nice and challenging kata. I love it.
Function one should take care of different time unit of each message.
For example, in 1110111, the time unit is 1(single 0 in the middle), thus a dash is 3 time units long, which is '111'(or '1'* 3units).
Hope this is helpful. And have fun:)

'xrange' is a function in Python 2.x.
In Python 3.x, use range() function instead.

Would import string module make the function run slower?

I think there's no need to get rid of punctuation.
The function returns True as long as the string contains all alphabets.