Not bad! A couple of points for potential improvement: Lines 3-6 look redundant. 'If' statement executes a block of code if a specified condition is true, or 'else' block if it's false. So, you could just replace the mentioned lines with 'return len(set(text)) == len(text)' Taking that into accou More

Remove line 12 (else) and you'll have 1 line shorter. ;) More

Good and clear solution. p.s. There was no need to **import re** :) More

Well done. Take a look into **capitalize()** string method. It can make you code more concise. :) More

Very good! Worth to mention that pop method removes the last element by default and returns it. So, lines 6-7 can be refactored into more concise way: state.insert(0, state.pop()) More

Not bad. But I would use more meaningful variable names for those who see the code the first time (or for future me. ;) More

Not bad. BTW you could avoid the use of **left** and **right** variables. More