Thanks for the tip :)

Hi there.
I can't picture the correct solution.
For example, given an edge of size 5, I can only imagine 34 stacked cannonballs (drew a tetrahedron and everything). Can I get a few tips?

Is there a difference between using "maketrans" in the "encode" and "decode" methods or in the instantiation?

You're right, I missed the import line.
Didn't know re had a split method (Or maybe I did, but never thought of using it :P )
Thanks for your input on using lists instead of strings. I'll try to keep that in mind.

Whoa, I didn't know split() could use a multiple pattern. Great solution :)

I'm having the same issue. I can only use getweight() two times :(

Hi there,

What Python documentation should I read to understand this?

That did the trick :D. Thanks

Hi. Did I do something out of the ordinary? I passed the first tests, but something's wrong with the random ones :

Random tests
Testing for [9, 0, 5, 6, 3, 3, 6, 3, 4, 4, 4, 8, 5]

Traceback:
   in 
   in 
TypeError: pair_zeros() takes exactly 1 argument (3 given)

Hi there,

How should I deal with this (python)? -> 6.89262064869326e+21 should equal 6892620648693261354600L